App Development Basics

Course Overview
An app is a collection of screens, data and rules that respond to what a user does. This course introduces those ideas through Code.org App Lab and Thunkable. It combines foundation lessons with a large set of guided app examples, so learners can first understand a concept and then see it used in several contexts. The central aim is to design a small working app, explain its logic and test how it behaves when the input or user action changes.

Begin with App Lab design and programming basics. Create interface elements, give them meaningful identifiers and connect a user event to an action. Work with variables, arrays, conditions, dropdowns, visibility changes, loops and timers. These lessons provide the foundation for understanding a calculator, quiz, utility or interactive screen. Written notes explain state, input checking and debugging steps that can be reused across projects.

Continue with data tables and record operations. Study how a project stores, reads, displays and changes information, then follow profile and data-app examples. The project library includes learning prototypes involving registration, user profiles, voting, appointments, inventory, transport and library records. Use fictional data and understand what the example actually implements. A classroom login or password-recovery demonstration is a learning model and needs additional design work before it can be treated as a production account system.

The Thunkable track introduces another app-building environment through practical examples. Start with a number-table app, timer, menu, calculator, quiz, checklist and local-data example. Progress to image, music, camera and QR-scanning projects, then explore weather, translation, notifications and assistant-style interfaces. Compare the screen design, component properties, event blocks and data flow with the ideas already practised in App Lab. Keep platform-specific setup and permissions documented.

The extended App Lab sections provide communication, publishing, game and utility projects. Examples include messaging and blogging prototypes, voting tools, quizzes, writing pads and other interactive applications. Treat this part as a project library: complete the foundation modules, choose examples that develop the skills needed for your final app, and use additional recordings for further practice. For a multipart project, complete its recordings in sequence before moving to another example.

All 136 recordings are presented by Gaurav Kumar Jain. The final assignment asks learners to build a focused app with clear screens, a useful input-to-result flow and a tested data or state feature. App Lab projects are educational browser-based prototypes; Thunkable features, external integrations and publishing options depend on the supported platform setup. The course develops beginner app-building and problem-solving skills through these environments. It does not require every guided example to become a separate finished portfolio project.

Module Overview
Give each screen and interactive element a clear purpose and meaningful identifier. Identify the input, the event and the state that the code changes. Trace a variable or array from its initial value to the displayed result. Start with one simple interaction and add a condition only when you can explain the expected response to each input.

Lesson Overview: Learn the basics of Code - Ist Live Online Coding Class
Trace the initial values, the event or repeated step that changes them and the output displayed by the app. Give important elements and variables names that describe their purpose. Follow one small input-to-result flow before combining several conditions.

Practice Task
Create a small app interaction using the demonstrated concept and use different fictional inputs from the example. Predict two results before running it. Change one condition, loop bound or stored value and explain how the displayed output changes.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Getting Started
Use a computer, a supported browser and access to Code.org App Lab. Create a small practice project before following a larger tutorial. Learn to switch between design and code views, identify a screen and give each interactive element a unique meaningful name. Keep separate copies of a working project before changing its data structure or logic. Use fictional records in learning apps and test with more than one sample user when a workflow requires it. For the Thunkable track, prepare the workspace and the supported preview or device-testing method used by your account. Identify permissions and external-service requirements for a camera, location or notification feature before reproducing it. Some platform features or publishing paths can depend on an account plan. Begin with a local interaction that you can test without several connected services.

Lesson Overview: Code.org - App Lab Tutorial - Simple App using Block Based coding - Live Online Coding Class-2
Trace the initial values, the event or repeated step that changes them and the output displayed by the app. Give important elements and variables names that describe their purpose. Follow one small input-to-result flow before combining several conditions.

Practice Task
Create a small app interaction using the demonstrated concept and use different fictional inputs from the example. Predict two results before running it. Change one condition, loop bound or stored value and explain how the displayed output changes.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Learning Roadmap
Complete App Lab foundations, event logic and data records before using the larger project library. For every screen, identify the input, the action, the state that changes and the result the user should see. When a workflow stores data, specify the fields and the rule for identifying a record. Test that a repeated click does not create an unintended extra action or timer. Follow the account-and-data examples as prototypes, then study the Thunkable track in its module order. Use the later communication and utility projects to practise a particular skill or extend your final assignment. Select a small set of projects to complete independently rather than copying many interfaces without understanding their behavior. Keep a written test case for empty input, a duplicate record or an unavailable connected service where applicable.

Lesson Overview: Variables and Arrays in App Lab Live Tutorial 4
Trace the initial values, the event or repeated step that changes them and the output displayed by the app. Give important elements and variables names that describe their purpose. Follow one small input-to-result flow before combining several conditions.

Practice Task
Create a small app interaction using the demonstrated concept and use different fictional inputs from the example. Predict two results before running it. Change one condition, loop bound or stored value and explain how the displayed output changes.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: How To Design login Screens - Use of If-Else Conditions - Simple Login System in Applab on Code.org
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Identify which event starts an action and which values need to persist between actions. Keep the effect of a loop or timer separate from a one-time button click. Test what happens when the same action is performed repeatedly, and stop or reset a timer where the design requires it. Use a small input-output table to check conditions and displayed results.

Lesson Overview: Drop down in App lab - Tutorial-7
Identify the event source, selected value and interface state changed by the rule. Give each element a meaningful identifier and test the interaction before connecting it to a larger data workflow.

Practice Task
Create a small menu, selection or visibility interaction with your own labels. Test every available choice and a repeat action. Add one independently chosen option or state and explain the rule that determines which element or result is shown.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Make interactive apps using On Event block in App lab on Code.org- Tutorial-8
Identify the event source, selected value and interface state changed by the rule. Give each element a meaningful identifier and test the interaction before connecting it to a larger data workflow.

Practice Task
Create a small menu, selection or visibility interaction with your own labels. Test every available choice and a repeat action. Add one independently chosen option or state and explain the rule that determines which element or result is shown.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Hide and Show element blocks in App Lab on Code.org - Tutorial - 9
Identify the event source, selected value and interface state changed by the rule. Give each element a meaningful identifier and test the interaction before connecting it to a larger data workflow.

Practice Task
Create a small menu, selection or visibility interaction with your own labels. Test every available choice and a repeat action. Add one independently chosen option or state and explain the rule that determines which element or result is shown.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: How To Create a Timer in App Lab - Live Tutorial-6
Identify the action that starts the timer, the state changed on each update and the action that stops or resets it. Distinguish a periodic update from a one-time event and inspect the effect of starting the action more than once.

Practice Task
Build a small timer-related interaction and test start, repeated start and stop or reset. Change one interval or display rule independently. Explain how your version avoids an unintended second running timer and how the initial state is restored.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: setInterval Block for creating an Interactive App in App lab on Code.org - Tutorial-10
Identify the action that starts the timer, the state changed on each update and the action that stops or resets it. Distinguish a periodic update from a one-time event and inspect the effect of starting the action more than once.

Practice Task
Build a small timer-related interaction and test start, repeated start and stop or reset. Change one interval or display rule independently. Explain how your version avoids an unintended second running timer and how the initial state is restored.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Loops in App lab of Code.org-Tutorial 12
Trace the initial values, the event or repeated step that changes them and the output displayed by the app. Give important elements and variables names that describe their purpose. Follow one small input-to-result flow before combining several conditions.

Practice Task
Create a small app interaction using the demonstrated concept and use different fictional inputs from the example. Predict two results before running it. Change one condition, loop bound or stored value and explain how the displayed output changes.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Calculator in App lab of Code.org-Tutorial-3
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Define the fields in a practice record and the rule used to identify it. Follow the sequence for creating, reading and displaying stored data. Distinguish a temporary interface value from a saved table row, and test whether a repeat action creates an unintended duplicate. Use fictional records and check the behavior of an empty result before adding a larger user workflow.

Lesson Overview: Store data on App's Cloud
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Use createrecord to Create Data On Data Storage of Your App
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Understand The Concept Of Createrecords and Readrecords block of Applab
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Data Tables in App lab of Code.org-Tutorial-15
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Graphs in App lab of Code.org-Tutorial-16
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Treat account and data examples as educational app prototypes. Trace a user action through the relevant screen, input check and record operation. Define what identifies the record and what the app should display when it is missing or repeated. Follow multipart demonstrations in order. Explain the classroom workflow implemented by the example without assuming that it supplies a complete production identity or permission system.

Lesson Overview: Voting System in App Lab using Radio Buttons of Code.org-Tutorial-18
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Teacher's Day Special in App Lab
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Login System Learning Prototype - App Lab - Code.Org
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Amazon Mobile App - E-Commerce App in App lab of Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Facebook App in App lab - Multi-User Login - Part-1
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Facebook App in App lab - Update User Profile - Part-2
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Gmail app - New User Registration - Part-1
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Twitter app - Create Account And Follow People - Part-1
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time OLX app with Chat Panel in App Lab - Sell & Purchase Goods
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time class teacher learning system Smartboard App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Test App - Teacher can take Students' Test - Applab - Code.org Project
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: How To Code Forgot Password, Logout and Delete Profile Buttons
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Live Voting System in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Auction App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Family Inventory App in Applab on Code.org
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Doctor appointment app in Applab On Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Digital Lock App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Office App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Transport Management App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Login System with An Intelligent Keyboard in Applab on Code.org
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Library Management System App in Applab on Code.org
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Free Live Online Coding Class-1(Applab-Login System Part-1)
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Free Live Online Coding Class-2 (Applab-Login System Part-2)
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Free Live Online Coding Class-3 (Applab-Login System Part-3)
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Free Live Coding Class-4(Applab-Login System Part-4)
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class - 5(Applab : Teacher-Student App Part-1)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class - 6 (Applab : Teacher-Student App Part-2)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class - 7 (Applab : Teacher-Student App Part-3)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Coding Class 23 (Real Time Voting App in Applab)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Coding Class 24 (Real Time Doctor's Appointment App)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Facebook App in App lab - Search Your Friend - Part-3
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Facebook App in App lab - Send Friend Request - Part-4
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Twitter app - Tweet - Part-2
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Gmail App - Check For Duplicate User Ids - Part-2
Map the screens and data involved in the demonstrated account or profile prototype. Identify the input check and the value that determines the next screen or stored record. Keep the classroom workflow separate from the additional design needed by a production identity system.

Practice Task
Test with clearly distinguishable fictional users or profiles. Record a normal action, a duplicate or missing identifier and a logout, reset or repeat action relevant to the lesson. Explain the state and record changes and the result shown on each screen.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Identify the Thunkable screen, component properties and event blocks used by the example. Connect an input value to the calculation, condition or local data operation that changes the result. Check empty input and repeat actions. Compare the app's state before and after closing or restarting the preview where storage behavior is relevant.

Lesson Overview: Number Table App on Thunkable
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Timer App on Thunkable
Identify the action that starts the timer, the state changed on each update and the action that stops or resets it. Distinguish a periodic update from a one-time event and inspect the effect of starting the action more than once.

Practice Task
Build a small timer-related interaction and test start, repeated start and stop or reset. Change one interval or display rule independently. Explain how your version avoids an unintended second running timer and how the initial state is restored.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Hamburger Menu on Thunkable
Identify the event source, selected value and interface state changed by the rule. Give each element a meaningful identifier and test the interaction before connecting it to a larger data workflow.

Practice Task
Create a small menu, selection or visibility interaction with your own labels. Test every available choice and a repeat action. Add one independently chosen option or state and explain the rule that determines which element or result is shown.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Calculator On Thunkable
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Quiz App On Thunkable
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Checklist App On Thunkable
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Local Database App on Thunkable - Gaurav Kumar Jain - GeeksforGeeks School
Identify the fields in the practice data and the rule that selects a record. Trace a create, read or display action from the interface to the stored result. Distinguish a temporary variable from information that remains available to a later action.

Practice Task
Use a few fictional records and perform one normal operation, one repeated action and a lookup with no matching result. Check that the displayed record is the intended one and that no unintended duplicate is created. Document the fields and selection rule.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Identify the media or device capability used by the project, the permission it requires and the result returned to the app. Keep a simple local test before adding editing, scanning or additional screens. Define the response to cancellation, missing input or an unavailable device feature. Test on the supported preview or device environment and record what was actually verified.

Lesson Overview: Image Editor on Thunkable
Identify the device or media input, the permission or component configuration it requires and the resulting image or decoded value. Keep input acquisition separate from editing, displaying or using that value in another screen.

Practice Task
Reproduce one small media interaction and record the supported device or preview environment. Test a successful result, cancellation or no input, and a repeat action. Change a display or processing step independently and explain where the app obtains the value it uses.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Music Player On Thunkable
Identify the selected media item, playback or interaction state and the user action that changes it. Keep the visual control separate from the data or media it operates on. Explain the starting and stopped states before adding additional interface behavior.

Practice Task
Use a small original or permitted media example and test selection, a normal action and a stop, restart or repeat action. Change a label or control rule independently. Explain how the selected item and current state determine what the app displays or plays.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: QR Code Scanner on Thunkable
Identify the device or media input, the permission or component configuration it requires and the resulting image or decoded value. Keep input acquisition separate from editing, displaying or using that value in another screen.

Practice Task
Reproduce one small media interaction and record the supported device or preview environment. Test a successful result, cancellation or no input, and a repeat action. Change a display or processing step independently and explain where the app obtains the value it uses.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Cartoon Characters App on Thunkable
Identify the device or media input, the permission or component configuration it requires and the resulting image or decoded value. Keep input acquisition separate from editing, displaying or using that value in another screen.

Practice Task
Reproduce one small media interaction and record the supported device or preview environment. Test a successful result, cancellation or no input, and a repeat action. Change a display or processing step independently and explain where the app obtains the value it uses.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Selfie App in Thunkable
Identify the device or media input, the permission or component configuration it requires and the resulting image or decoded value. Keep input acquisition separate from editing, displaying or using that value in another screen.

Practice Task
Reproduce one small media interaction and record the supported device or preview environment. Test a successful result, cancellation or no input, and a repeat action. Change a display or processing step independently and explain where the app obtains the value it uses.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Trace the user input, connected service and returned result in the Thunkable example. Record configuration and account requirements before reproducing an older integration. Distinguish waiting for a result from receiving an empty result, and decide what feedback the user should see in each case. Add a basic local interaction first so that service behavior can be investigated separately from interface logic.

Lesson Overview: Chatbot on Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Google Lens on Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Google Assistant on Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Weather App on Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Push Notifications on Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Corona Case Reporting App on Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Services App in Thunkable
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Google Translator In Thunkable
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Map the sender, receiver, message or published item used by the project. Identify how a record is created, selected and displayed and whether a refresh or repeated action changes the result. Use clearly distinguishable fictional users when testing a communication flow. Verify the behavior for an empty conversation, a new item and a repeated update before adding interface details.

Lesson Overview: Realtime Radio Broadcast App in Applab
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Communication System in Applab
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Whatsapp Messenger in applab of Code.org-Live Online Tutorial-19
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real time Newspaper App Development in Applab on Code.org
Identify the published item, the fields used to store it and the action that selects or displays it. Separate creating content from navigating, searching or formatting an existing item. Check what identifies the current record.

Practice Task
Create a few short fictional items with distinguishable titles. Test adding one, navigating or searching as supported, and an empty or missing result. Change one display or selection rule and explain how the interface finds the correct stored item.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Chatbot in code.org
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Blogger app in Applab on Code.org - Create and Publish Blogs - Part-1
Identify the published item, the fields used to store it and the action that selects or displays it. Separate creating content from navigating, searching or formatting an existing item. Check what identifies the current record.

Practice Task
Create a few short fictional items with distinguishable titles. Test adding one, navigating or searching as supported, and an empty or missing result. Change one display or selection rule and explain how the interface finds the correct stored item.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Blogger app - Next and Previous Buttons - Part-2
Identify the published item, the fields used to store it and the action that selects or displays it. Separate creating content from navigating, searching or formatting an existing item. Check what identifies the current record.

Practice Task
Create a few short fictional items with distinguishable titles. Test adding one, navigating or searching as supported, and an empty or missing result. Change one display or selection rule and explain how the interface finds the correct stored item.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Blogging In App lab - Search Button - Part-3
Identify the published item, the fields used to store it and the action that selects or displays it. Separate creating content from navigating, searching or formatting an existing item. Check what identifies the current record.

Practice Task
Create a few short fictional items with distinguishable titles. Test adding one, navigating or searching as supported, and an empty or missing result. Change one display or selection rule and explain how the interface finds the correct stored item.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Whatsapp - Chatting App - Send and Receive Messages - Part-1
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Whatsapp in Applab - Messages In Colorful Dynamic Boxes - Part-2
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Whatsapp in Applab - Chatting Rooms Creation - Part-3
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Whatsapp in Applab - Broadcast Group - Part-4
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Alexa Vs Google Assistant in Applab on Code.org - Virtual Assistant - Chatbot
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Communication System Using Drop Down in Applab on Code.org
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Walkie-Talkie App In Applab on Code.org - Code.org Project
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Hindi-English Newspaper App in Applab - Code.org Projects
Identify the published item, the fields used to store it and the action that selects or displays it. Separate creating content from navigating, searching or formatting an existing item. Check what identifies the current record.

Practice Task
Create a few short fictional items with distinguishable titles. Test adding one, navigating or searching as supported, and an empty or missing result. Change one display or selection rule and explain how the interface finds the correct stored item.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Radio Broadcast App in Applab On Code.org
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Class 15 ( Messaging App in Applab on Code.org Part-1)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Class 16 ( Messaging App in Applab on Code.org Part-2)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class-17(Walkie-Talkie App in Applab on Code.org)
Map the sender, receiver, message or channel used by the communication prototype. Identify when a new item is created, which items are selected for display and how a refresh affects the result. Distinguish a stored message from its visual presentation.

Practice Task
Use two clearly identified fictional participants and exchange a small number of distinguishable items. Test an empty item, a repeated action and the selection of the intended conversation or channel. Record the data and interface state used to display the result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Module Overview
Use this project-library section to practise a specific skill after the foundation modules. Identify the project's main user action and the state or data that produces the result. Complete one small modification independently and test a repeat, restart or invalid-input case. Similar project ideas are additional practice recordings, not evidence that several different programming concepts have been covered.

Lesson Overview: Real Time Multiplayer Hide & Seek Game in Applab
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Math Tables App in Applab
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time ohm's law based App in Applab
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Smart Board App in Applab
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Writing Pad App in Applab
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Automatic Fun Fact Generator In AppLab
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Rock Paper Scissor Game in App lab of Code.org-Tutorial 17
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Spotify App - Learn To Make A Musical App in App Lab - Code.org Project
Identify the selected media item, playback or interaction state and the user action that changes it. Keep the visual control separate from the data or media it operates on. Explain the starting and stopped states before adding additional interface behavior.

Practice Task
Use a small original or permitted media example and test selection, a normal action and a stop, restart or repeat action. Change a label or control rule independently. Explain how the selected item and current state determine what the app displays or plays.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Zomato App in App lab - Code.org Project
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Talking Tom App in Applab - Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: KBC in App Lab - Kaun Banega Crorepati - Quiz Game
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Tasty App in App Lab! Share Your Food Recipe
Identify the published item, the fields used to store it and the action that selects or displays it. Separate creating content from navigating, searching or formatting an existing item. Check what identifies the current record.

Practice Task
Create a few short fictional items with distinguishable titles. Test adding one, navigating or searching as supported, and an empty or missing result. Change one display or selection rule and explain how the interface finds the correct stored item.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Bollywood Movie Quiz in App lab on Code.org
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Find The Difference App in Applab - Scrolling Background - Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Braindom 2 app in Applab on Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Holiday Party App On Code.org - Music and Dance - Short App Part-1
Identify the selected media item, playback or interaction state and the user action that changes it. Keep the visual control separate from the data or media it operates on. Explain the starting and stopped states before adding additional interface behavior.

Practice Task
Use a small original or permitted media example and test selection, a normal action and a stop, restart or repeat action. Change a label or control rule independently. Explain how the selected item and current state determine what the app displays or plays.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Interview App in App lab on Code.org
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Gps tracking system in App Lab on Code.org
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Automatic Fun Fact Generator In AppLab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Three Player Slider Controller Application - Slider in Code.org in Applab
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real-Time Tic Tac Toe Game in Applab on Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Ludo King Game In Applab on Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Test Yourself - Applab' Features Based Test - Code.org Test-2
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Chess Game In Applab on Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Emergency App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time PlayStation In Applab On Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Language App in App Lab On Code.org - Learn Sign Language
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time love vs hate app in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Math Tables App in Applab on Code.org
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time ohm's law based App in Applab on Code.org
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Multiplayer Hide & Seek Game in Applab On Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Television App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time KBC App-Part 2 in Applab on Code.org
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: How to Convert Code.org Projects into apk files
Distinguish the original educational project, the conversion or packaging workflow and the environment that runs the result. Identify what the recording actually converts and what must be tested after a package or wrapper is produced.

Practice Task
Document the starting project, supported conversion steps and output tested in the example. If you reproduce it, verify the central interaction on the target environment. State clearly whether you tested the source preview, a converted output or both.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Uber App in Applab on Code.org
Identify the input, connected capability or service and the returned information used by the app. Separate the user interface from service configuration and examine the behavior while no usable result is available. Older project integrations may require a compatible or updated service setup.

Practice Task
Test one small request or device interaction in the supported environment, then an empty input or unavailable-result case. Describe the feedback shown to the user. Keep account configuration and fictional test data documented, and explain one independent interface or error-handling improvement.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Series and Parallel Circuits App in Applab on Code.org
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Real Time Hide The Ring Game in Applab on Code.org
Identify the user action, current game state and the rule that changes progress, score or the result. Separate the starting state from active play and the end condition. Explain how the interface represents a change in that state.

Practice Task
Test one normal play sequence, an invalid or repeated action and a restart. Change one rule or feedback behavior independently. Keep a short state description so that another learner can understand how the app decides what happens next.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: KBC App in Applab
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Test Yourself - Applab' Features Based Test - Code.org Test-1
Identify the current question, selected answer, progress and score or feedback state. Separate showing a new question from scoring the previous one. Follow the rule that changes the result after the user answers.

Practice Task
Create a short original question set and test a correct answer, an incorrect answer and a repeated submission. Check the final result and restart state. Add one feedback or navigation improvement and explain how the app tracks the learner's progress.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Class 26(Real Time Emergency App In Applab)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class 18 (Real Time Math Tables App in Applab )
Identify the input values, their intended numeric meaning and the calculation or sequence that produces the result. Check whether text input must be converted before arithmetic and define the behavior for an empty or unsuitable value.

Practice Task
Use a small calculation whose result you can verify independently. Test a normal value, zero and an empty or unexpected input. Add one useful label or input check and explain the calculation and the conditions under which the result should be displayed.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class 19 (Multidevice Writing Pad in Applab-Part 1)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Coding Class 20 (Multidevice Writing Pad in Applab-Part 2)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Coding Class - 21 (Number Fact Generator in Applab)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Online Class 25 (Real Time Zomato App in Applab)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Lesson Overview: Live Coding Class 22 (Sign Language App in Applab on Code.org)
Describe the main user goal of this app example, the information shown on each relevant screen and the event that changes the result. Identify whether that result depends on temporary state, a stored record or a device or service interaction.

Practice Task
Build a small version of the central interaction using your own fictional labels or data. Test an ordinary action, an empty or unexpected input and a repeat or restart condition. Make one meaningful change and explain the logic behind the observed result.

What to Check
Test a normal action, an empty or unexpected input and a repeated action or restart suited to this feature. Explain the event, the state or record changed and the result shown to the user.

Final Project and Completion Guide
Build a small study planner, quiz, checklist, appointment prototype or similar app suited to the covered environments. Provide a clear starting screen, a useful user interaction and a state or data feature that affects the result. Choose the platform that matches your project rather than combining App Lab and Thunkable code into one application. Use at least three test cases covering an ordinary action, an empty or invalid input and a repeat or restart condition. If a connected service is used, show the app's response when no usable result is returned. Submit a project link or exported files where supported, an explanation of the main event flow and a test log. Assess understandable screens, correct logic, predictable data behavior and one independently added feature. Demonstrate learning through the app's behavior and explanation, not only its visual resemblance to a guided example.