Please enable JavaScript to use CodeHS


IB Computer Science Higher Level (Year One)

Lessons

  1. Introduction to Programming in Java with Karel the Dog

    1. 1.1 Introduction to Programming With Karel

    2. Description
    3. Objective

    4. 1.2 More Basic Karel

    5. Description
    6. Objective

    7. 1.3 Java Programs and the Run Method

    8. Description
    9. Objective

    10. 1.4 Karel Can't Turn Right

    11. Description
    12. Objective

    13. 1.5 Methods in Karel

    14. Description
    15. Objective

    16. 1.6 Top Down Design and Decomposition in Karel

    17. Description
    18. Objective

    19. 1.7 Commenting Your Code

    20. Description
    21. Objective

    22. 1.8 Abstraction

    23. Description
    24. Objective

    25. 1.9 Super Karel

    26. Description
    27. Objective

    28. 1.10 For Loops

    29. Description
    30. Objective

    31. 1.11 While Loops in Karel

    32. Description
    33. Objective

    34. 1.12 If Statements

    35. Description
    36. Objective

    37. 1.13 If/Else Statements

    38. Description
    39. Objective

    40. 1.14 Control Structures Example

    41. Description
    42. Objective

    43. 1.15 More Karel Examples and Testing

    44. Description
    45. Objective

    46. 1.16 How to Indent Your Code

    47. Description
    48. Objective

    49. 1.17 What is Code

    50. Description
    51. Objective

    52. 1.18 Uses of Programs

    53. Description
    54. Objective

    55. 1.19 Karel Challenges

    56. Description
    57. Objective

    58. 1.20 Introduction to Programming in Java Quiz

    59. Description
    60. Objective

  2. Design Thinking

    1. 2.1 Intro to Design Thinking

    2. Description
    3. Objective

    4. 2.2 Empathy

    5. Description
    6. Objective

    7. 2.3 Define

    8. Description
    9. Objective

    10. 2.4 Ideate

    11. Description
    12. Objective

    13. 2.5 Prototype

    14. Description
    15. Objective

    16. 2.6 Test

    17. Description
    18. Objective

  3. Project: Put it in Writing!

    1. 3.1 Context for Change

    2. Description
    3. Objective

    4. 3.2 Planning for System Implementation

    5. Description
    6. Objective

    7. 3.3 Preparing Users

    8. Description
    9. Objective

    10. 3.4 Maintaining the System

    11. Description
    12. Objective

  4. Digital Information

    1. 4.1 Intro to Digital Information

    2. Description
    3. Objective

    4. 4.2 Number Systems

    5. Description
    6. Objective

    7. 4.3 Encoding Text with Binary

    8. Description
    9. Objective

    10. 4.4 Hexadecimal

    11. Description
    12. Objective

    13. 4.5 Pixel Images

    14. Description
    15. Objective

    16. 4.6 Pixel Colors!

    17. Description
    18. Objective

    19. 4.7 Data Compression

    20. Description
    21. Objective

    22. 4.8 Lossy Compression

    23. Description
    24. Objective

    25. 4.9 Digital Information Quiz

    26. Description
    27. Objective

  5. Networking

    1. 5.1 Welcome to the Internet

    2. Description
    3. Objective

    4. 5.2 DNS and Routing

    5. Description
    6. Objective

    7. 5.3 Packets and Protocols

    8. Description
    9. Objective

    10. 5.4 Protocols and Standards

    11. Description
    12. Objective

    13. 5.5 Private Networks

    14. Description
    15. Objective

    16. 5.6 Cybersecurity

    17. Description
    18. Objective

    19. 5.7 Advanced Devices

    20. Description
    21. Objective

    22. 5.8 The Impact of the Internet

    23. Description
    24. Objective

    25. 5.9 The Internet Quiz

    26. Description
    27. Objective

    28. 5.10 Networking Quiz

    29. Description
    30. Objective

  6. Primitive Types

    1. 6.1 Why Programming? Why Java?

    2. Description
    3. Objective

    4. 6.2 Variables and Data Types

    5. Description
    6. Objective

    7. 6.3 Expressions and Assignment Statements

    8. Description
    9. Objective

    10. 6.4 Compound Assignment Operators

    11. Description
    12. Objective

    13. 6.5 User Input

    14. Description
    15. Objective

    16. 6.6 Casting and Ranges of Variables

    17. Description
    18. Objective

    19. 6.7 Primitive Types Quiz

    20. Description
    21. Objective

  7. Computer Organization

    1. 7.1 Internal Components

    2. Description
    3. Objective

    4. 7.2 Peripheral Devices

    5. Description
    6. Objective

    7. 7.3 Network Devices

    8. Description
    9. Objective

    10. 7.4 Storage Options

    11. Description
    12. Objective

    13. 7.5 Network Options

    14. Description
    15. Objective

    16. 7.6 Operating Systems

    17. Description
    18. Objective

    19. 7.7 Software and Applications

    20. Description
    21. Objective

    22. 7.8 Browser Configuration

    23. Description
    24. Objective

    25. 7.9 Sequential, Parallel & Distributed Computing

    26. Description
    27. Objective

    28. 7.10 Computer Organization Quiz

    29. Description
    30. Objective

  8. Using Objects

    1. 8.1 Objects: Instances of Classes

    2. Description
    3. Objective

    4. 8.2 Creating and Storing Objects (Instantiation)

    5. Description
    6. Objective

    7. 8.3 Overloading

    8. Description
    9. Objective

    10. 8.4 Calling a Void Method

    11. Description
    12. Objective

    13. 8.5 Calling a Void Method with Parameters

    14. Description
    15. Objective

    16. 8.6 Calling a Non-void Method

    17. Description
    18. Objective

    19. 8.7 String Objects

    20. Description
    21. Objective

    22. 8.8 String Methods

    23. Description
    24. Objective

    25. 8.9 Wrapper Classes: Integers and Doubles

    26. Description
    27. Objective

    28. 8.10 Using the Math Class

    29. Description
    30. Objective

    31. 8.11 Using Objects Quiz

    32. Description
    33. Objective

  9. Boolean Expressions and if Statements

    1. 9.1 Boolean Expressions and if Statements

    2. Description
    3. Objective

    4. 9.2 if Statements and Control Flow

    5. Description
    6. Objective

    7. 9.3 if-else Statements

    8. Description
    9. Objective

    10. 9.4 else if Statements

    11. Description
    12. Objective

    13. 9.5 Compound Boolean Expressions

    14. Description
    15. Objective

    16. 9.6 Equivalent Boolean Expressions

    17. Description
    18. Objective

    19. 9.7 Comparing Objects

    20. Description
    21. Objective

    22. 9.8 Boolean Expressions and if Statements Quiz

    23. Description
    24. Objective

  10. Iteration

    1. 10.1 Iteration

    2. Description
    3. Objective

    4. 10.2 For Loops

    5. Description
    6. Objective

    7. 10.3 Developing Algorithms Using Strings

    8. Description
    9. Objective

    10. 10.4 Nested Iteration

    11. Description
    12. Objective

    13. 10.5 Informal Code Analysis

    14. Description
    15. Objective

    16. 10.6 Iteration Quiz

    17. Description
    18. Objective

  11. Writing Classes

    1. 11.1 Writing Classes

    2. Description
    3. Objective

    4. 11.2 Constructors

    5. Description
    6. Objective

    7. 11.3 Documentation with Comments

    8. Description
    9. Objective

    10. 11.4 Accessor Methods

    11. Description
    12. Objective

    13. 11.5 Mutator Methods

    14. Description
    15. Objective

    16. 11.6 Writing Methods

    17. Description
    18. Objective

    19. 11.7 Static Variables and Methods

    20. Description
    21. Objective

    22. 11.8 Scope and Access

    23. Description
    24. Objective

    25. 11.9 this Keyword

    26. Description
    27. Objective

    28. 11.10 Ethical and Social Implications of Computing

    29. Description
    30. Objective

    31. 11.11 Writing Classes Quiz

    32. Description
    33. Objective

  12. Array

    1. 12.1 Array

    2. Description
    3. Objective

    4. 12.2 Traversing Arrays

    5. Description
    6. Objective

    7. 12.3 Enhanced for Loop for Arrays

    8. Description
    9. Objective

    10. 12.4 Developing Algorithms Using Arrays

    11. Description
    12. Objective

    13. 12.5 Array Quiz

    14. Description
    15. Objective

  13. ArrayList

    1. 13.1 ArrayList

    2. Description
    3. Objective

    4. 13.2 ArrayList Methods

    5. Description
    6. Objective

    7. 13.3 Traversing ArrayLists

    8. Description
    9. Objective

    10. 13.4 Developing Algorithms using ArrayLists

    11. Description
    12. Objective

    13. 13.5 Searching

    14. Description
    15. Objective

    16. 13.6 Sorting

    17. Description
    18. Objective

    19. 13.7 Ethical Issues Around Data Collection

    20. Description
    21. Objective

    22. 13.8 ArrayList Quiz

    23. Description
    24. Objective

  14. 2D Array

    1. 14.1 2D Arrays

    2. Description
    3. Objective

    4. 14.2 Traversing 2D Arrays

    5. Description
    6. Objective

    7. 14.3 2D Array Quiz

    8. Description
    9. Objective

  15. Recursion

    1. 15.1 Recursion

    2. Description
    3. Objective

    4. 15.2 Recursive Searching

    5. Description
    6. Objective

    7. 15.3 Recursive Sorting

    8. Description
    9. Objective

    10. 15.4 Recursion Quiz

    11. Description
    12. Objective

  16. Exam Practice

    1. 16.1 IB Assessment Prep Overview

    2. Description
    3. Objective

    4. 16.2 External Assessment Overview

    5. Description
    6. Objective

    7. 16.3 Study Guides

    8. Description
    9. Objective

    10. 16.4 Systems in Organizations Study Guide

    11. Description
    12. Objective

    13. 16.5 Practice Exam

    14. Description
    15. Objective

    16. 16.6 Internal Assessment Overview

    17. Description
    18. Objective

  17. Inheritance

  18. Classes and Object-Oriented Programming