AP CS A Java Course

Welcome to CS Awesome! It’s time to start your journey to learn how to program with Java. A shortcut way to get to this site is to type in the url: course.csawesome.org

CSAwesome is a College Board endorsed curriculum for AP Computer Science A, an introductory college-level computer programming course in Java. If you are a teacher using this curriculum, please join the teaching CSAwesome group which will give you access to teacher resources at csawesome.org.

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• Unit 1 Getting Started and Primitive Types
• Unit 2 Using Objects
• Unit 3 If Statements
• Unit 4 Iteration/Loops
• Unit 5 Writing Classes
• Unit 6 Arrays
• Unit 7 ArrayLists
• Unit 8 2D Arrays
• Unit 9 Inheritance
• Unit 10 Recursion
• Practice units: 11, 12, 13, 14, 15
• Stories

Table of Contents

• Assignments

• 1. Getting Started and Primitive Types
  • 1.1. Getting Started
    • 1.1.1. Preface
    • 1.1.2. About the AP CS A Exam
    • 1.1.3. Transitioning from AP CSP to AP CS A
    • 1.1.4. Java Development Environments
    • 1.1.5. Growth Mindset and Pair Programming
    • 1.1.6. Pretest for the AP CS A Exam
    • 1.1.7. Survey
  • 1.2. Why Programming? Why Java?
    • 1.2.1. First Java Program
    • 1.2.2. Print Commands
    • 1.2.3. Syntax Errors and Debugging
    • 1.2.4. Comments
    • 1.2.5. Debugging Challenge
    • 1.2.6. Summary
    • 1.2.7. AP Practice
  • 1.3. Variables and Data Types
    • 1.3.1. What is a Variable?
    • 1.3.2. Data Types
    • 1.3.3. Declaring Variables in Java
    • 1.3.4. Naming Variables
    • 1.3.5. Debugging Challenge : Weather Report
    • 1.3.6. Summary
    • 1.3.7. AP Practice
  • 1.4. Expressions and Assignment Statements
    • 1.4.1. Assignment Statements
    • 1.4.2. Adding 1 to a Variable
    • 1.4.3. Input with Variables
    • 1.4.4. Operators
    • 1.4.5. The Modulo Operator
    • 1.4.6. Programming Challenge : Dog Years
    • 1.4.7. Summary
    • 1.4.8. AP Practice
  • 1.5. Compound Assignment Operators
    • 1.5.1. Code Tracing Challenge and Operators Maze
    • 1.5.2. Summary
  • 1.6. Casting and Ranges of Variables
    • 1.6.1. Programming Challenge : Average 3 Numbers
    • 1.6.2. Summary
  • 1.7. Unit 1 Summary
    • 1.7.1. Concept Summary
    • 1.7.2. Java Keyword Summary
    • 1.7.3. Vocabulary Practice
    • 1.7.4. Common Mistakes
  • 1.8. Mixed Up Code Practice
  • 1.9. Experimental: Choose Mixed Up or Write Code Practice
  • 1.10. Coding Practice
  • 1.11. Multiple Choice Exercises
• 2. Using Objects
  • 2.1. Objects - Instances of Classes
    • 2.1.1. What are Objects and Classes?
    • 2.1.2. Intro to Objects with Turtles
    • 2.1.3. Creating Turtle Objects
    • 2.1.4. Programming Challenge : Turtle Drawing
    • 2.1.5. Summary
    • 2.1.6. AP Practice
  • 2.2. Creating and Initializing Objects: Constructors
    • 2.2.1. Overloading Constructors
    • 2.2.2. The World Class Constructors
    • 2.2.3. The Turtle Class Constructors
    • 2.2.4. Object Variables and References
    • 2.2.5. Constructor Signatures
    • 2.2.6. Formal and Actual Parameters
    • 2.2.7. Programming Challenge: Custom Turtles
    • 2.2.8. Summary
    • 2.2.9. AP Practice
  • 2.3. Calling Methods Without Parameters
    • 2.3.1. Procedural Abstraction
    • 2.3.2. Programming Challenge : Draw a Letter
    • 2.3.3. Summary
    • 2.3.4. AP Practice
  • 2.4. Calling Methods With Parameters
    • 2.4.1. Tracing Methods
    • 2.4.2. Programming Challenge : Turtle House
    • 2.4.3. Summary
    • 2.4.4. AP Practice
  • 2.5. Calling Methods that Return Values
    • 2.5.1. Get Methods
    • 2.5.2. toString() Methods
    • 2.5.3. Methods with Arguments and Return Values
    • 2.5.4. Programming Challenge : Turtle Distances
    • 2.5.5. Summary
    • 2.5.6. AP Practice
  • 2.6. Strings
    • 2.6.1. String Operators - Concatenation
    • 2.6.2. Programming Challenge : Mad Libs
    • 2.6.3. Summary
  • 2.7. String Methods
    • 2.7.1. String Methods: length, substring, indexOf
    • 2.7.2. CompareTo and Equals
    • 2.7.3. Common Mistakes with Strings
    • 2.7.4. Programming Challenge : Pig Latin
    • 2.7.5. Summary
    • 2.7.6. String Methods Game
  • 2.8. Wrapper Classes - Integer and Double
    • 2.8.1. Programming Challenge : Debugging
    • 2.8.2. Summary
  • 2.9. Using the Math Class
    • 2.9.1. Programming Challenge : Random Numbers
    • 2.9.2. Summary
  • 2.10. Unit 2 Summary
    • 2.10.1. Concept Summary
    • 2.10.2. Java Keyword Summary
    • 2.10.3. Vocabulary Practice
    • 2.10.4. Common Mistakes
  • 2.11. Mixed Up Code Practice
  • 2.12. Experimental: Choose Mixed Up or Write Code Practice
  • 2.13. Coding Practice
  • 2.14. Practice Test for Objects (2.1-2.5)
  • 2.15. Multiple Choice Exercises
    • 2.15.1. Easier Multiple Choice Questions
    • 2.15.2. Medium Multiple Choice Questions
    • 2.15.3. Hard Multiple Choice Questions
  • 2.16. Java Swing GUIs (optional)
• 3. Boolean Expressions and If Statements
  • 3.1. Boolean Expressions
    • 3.1.1. Testing Equality (==)
    • 3.1.2. Relational Operators (<, >)
    • 3.1.3. Testing with mod (%)
    • 3.1.4. Programming Challenge : Prime Numbers POGIL
    • 3.1.5. Summary
    • 3.1.6. Relational Operators Practice Game
  • 3.2. if Statements and Control Flow
    • 3.2.1. Relational Operators in If Statements
    • 3.2.2. Common Errors with If Statements
    • 3.2.3. Programming Challenge : Magic 8 Ball
    • 3.2.4. Summary
  • 3.3. Two-way Selection: if-else Statements
    • 3.3.1. Nested Ifs and Dangling Else
    • 3.3.2. Programming Challenge : 20 Questions
    • 3.3.3. Summary
  • 3.4. Multi-Selection: else-if Statements
    • 3.4.1. Programming Challenge : Adventure
    • 3.4.2. Summary
  • 3.5. Compound Boolean Expressions
    • 3.5.1. And (&&), Or (||), and Not (!)
    • 3.5.2. Truth Tables
    • 3.5.3. Short Circuit Evaluation
    • 3.5.4. Programming Challenge : Truth Tables POGIL
    • 3.5.5. Summary
    • 3.5.6. Boolean Game
  • 3.6. Equivalent Boolean Expressions (De Morgan’s Laws)
    • 3.6.1. De Morgan’s Laws
    • 3.6.2. Truth Tables
    • 3.6.3. Simplifying Boolean Expressions
    • 3.6.4. Programming Challenge : Truth Tables POGIL
    • 3.6.5. Summary
  • 3.7. Comparing Objects
    • 3.7.1. String Equality
    • 3.7.2. Equality with New Strings
    • 3.7.3. Comparing with null
    • 3.7.4. Programming Challenge : Tracing Code
    • 3.7.5. Summary
  • 3.8. Unit 3 - Summary
    • 3.8.1. Concept Summary
    • 3.8.2. Java Keyword Summary
    • 3.8.3. Vocabulary Practice
    • 3.8.4. Common Mistakes
  • 3.9. Mixed Up Code Practice
  • 3.10. Experimental: Choose Mixed Up or Write Code Practice
  • 3.11. Coding Practice
  • 3.12. Multiple Choice Exercises
    • 3.12.1. Easier Multiple Choice Questions
    • 3.12.2. Medium Multiple Choice Questions
    • 3.12.3. Hard Multiple Choice Questions
  • 3.13. Magpie Chatbot Lab
    • 3.13.1. Magpie ChatBot Lab
    • 3.13.2. Activity 2: Running Simplified Magpie Code
    • 3.13.3. Activity 3: Better Keyword Detection
    • 3.13.4. Activity 4: Responses that Transform Statements
    • 3.13.5. Mixed Up Code Practice
• 4. Iteration (Loops)
  • 4.1. While Loops
    • 4.1.1. Three Steps to Writing a Loop
    • 4.1.2. Tracing Loops
    • 4.1.3. Common Errors with Loops
    • 4.1.4. Input-Controlled Loops
    • 4.1.5. Programming Challenge : Guessing Game
    • 4.1.6. Summary
  • 4.2. For Loops
    • 4.2.1. Three Parts of a For Loop
    • 4.2.2. Decrementing Loops
    • 4.2.3. Turtle Loops
    • 4.2.4. Programming Challenge : Turtles Drawing Shapes
    • 4.2.5. Summary
  • 4.3. Loops and Strings
    • 4.3.1. While Find and Replace Loop
    • 4.3.2. For Loops: Reverse String
    • 4.3.3. Programming Challenge : String Replacement Cats and Dogs
    • 4.3.4. Summary
  • 4.4. Nested For Loops
    • 4.4.1. Nested Loops with Turtles
    • 4.4.2. Programming Challenge : Turtle Snowflakes
    • 4.4.3. Summary
  • 4.5. Loop Analysis
    • 4.5.1. Tracing Loops
    • 4.5.2. Counting Loop Iterations
    • 4.5.3. Programming Challenge : POGIL Analyzing Loops
    • 4.5.4. Summary
    • 4.5.5. Loop Analysis Game
  • 4.6. Unit 4 Summary
    • 4.6.1. Concept Summary
    • 4.6.2. Java Keyword Summary
    • 4.6.3. Vocabulary Practice
    • 4.6.4. Common Mistakes
  • 4.7. Mixed Up Code Practice
  • 4.8. Experimental: Choose Mixed Up or Write Code Practice
  • 4.9. Coding Practice with Loops
  • 4.10. Multiple Choice Exercises
    • 4.10.1. Easier Multiple Choice Questions
    • 4.10.2. Medium Multiple Choice Questions
    • 4.10.3. More Practice
  • 4.11. Free Response Questions (FRQs) for Control Structures
    • 4.11.1. 2019 APCalendar FRQ
    • 4.11.2. Part A: numberOfLeapYear()
    • 4.11.3. How to solve numberOfLeapYears()
    • 4.11.4. Part B: dayOfWeek()
  • 4.12. Free Response - Self Divisor A
    • 4.12.1. How to solve this problem
    • 4.12.2. Video - One way to code the solution
  • 4.13. Free Response - String Scramble A
    • 4.13.1. How to solve this problem
    • 4.13.2. Figuring out the algorithm
    • 4.13.3. Write the Code
    • 4.13.4. Video - One way to code the solution
  • 4.14. Consumer Review Lab
    • 4.14.1. Activity 0 Analyzing Reviews
    • 4.14.2. Activity 1 : Sentiment Value
    • 4.14.3. Activity 2 :Total Sentiment Value and Star Ratings
    • 4.14.4. Activity 3 : Autogenerate a Fake Review
    • 4.14.5. Activity 4 : Create a More Positive or Negative Review
    • 4.14.6. Activity 5 : Open-ended Activity
• 5. Writing Classes
  • 5.1. Anatomy of a Java Class
    • 5.1.1. Creating a Class
    • 5.1.2. Instance Variables
    • 5.1.3. Methods
    • 5.1.4. Object-Oriented Design
    • 5.1.5. Programming Challenge : Riddle Class
    • 5.1.6. Summary
    • 5.1.7. AP Practice
  • 5.2. Writing Constructors
    • 5.2.1. Programming Challenge : Student Class
    • 5.2.2. Summary
    • 5.2.3. AP Practice
  • 5.3. Comments and Conditions
    • 5.3.1. Comments
    • 5.3.2. Preconditions and Postconditions
    • 5.3.3. Software Validity and Use-Case Diagrams
    • 5.3.4. Agile Software Development
    • 5.3.5. Programming Challenge : Comments and Conditions
    • 5.3.6. Summary
  • 5.4. Accessor Methods
    • 5.4.1. toString()
    • 5.4.2. Programming Challenge : Class Pet
    • 5.4.3. Summary
    • 5.4.4. AP Practice
  • 5.5. Mutator Methods
    • 5.5.1. Programming Challenge : Class Pet Setters
    • 5.5.2. Summary
    • 5.5.3. AP Practice
  • 5.6. Writing Methods
    • 5.6.1. Parameters
    • 5.6.2. Programming Challenge : Song with Parameters
    • 5.6.3. Summary
    • 5.6.4. AP Practice
  • 5.7. Static Variables and Methods
    • 5.7.1. Programming Challenge : Static Song and counter
    • 5.7.2. Summary
  • 5.8. Scope and Access
    • 5.8.1. Programming Challenge : Debugging
    • 5.8.2. Summary
    • 5.8.3. AP Practice
  • 5.9. this Keyword
    • 5.9.1. Programming Challenge : Bank Account
    • 5.9.2. Summary
    • 5.9.3. AP Practice
  • 5.10. Social Impacts of CS
    • 5.10.1. POGIL Groupwork: Impacts of CS
    • 5.10.2. Summary
  • 5.11. Unit 5 Summary
    • 5.11.1. Concept Summary
    • 5.11.2. Java Keyword Summary
    • 5.11.3. Vocabulary Practice
  • 5.12. Exercises
  • 5.13. Free Response Question (FRQ) for Classes
    • 5.13.1. 2019 StepTracker Class FRQ
    • 5.13.2. Determining the Instance Variables
    • 5.13.3. Writing the Class Header and Constructor
    • 5.13.4. Writing the Accessor Method activeDays
    • 5.13.5. Writing the Mutator Method addDailySteps
    • 5.13.6. Writing the Accessor Method averageSteps
  • 5.14. Free Response Question - Time
  • 5.15. Free Response Question - APLine
    • 5.15.1. Try and Solve It
  • 5.16. Midterm Test
  • 5.17. College Board Celebrity and Data Labs
• 6. Arrays
  • 6.1. Array Creation and Access
    • 6.1.1. Declaring and Creating an Array
    • 6.1.2. Using new to Create Arrays
    • 6.1.3. Initializer Lists to Create Arrays
    • 6.1.4. Array length
    • 6.1.5. Access and Modify Array Values
    • 6.1.6. Programming Challenge : Countries Array
    • 6.1.7. Summary
    • 6.1.8. Arrays Game
  • 6.2. Traversing Arrays with For Loops
    • 6.2.1. Index Variables
    • 6.2.2. For Loop to Traverse Arrays
    • 6.2.3. Looping From Back to Front
    • 6.2.4. Looping through Part of an Array
    • 6.2.5. Common Errors When Looping Through an Array
    • 6.2.6. Programming Challenge : SpellChecker
    • 6.2.7. Summary
    • 6.2.8. Arrays Game
  • 6.3. Enhanced For-Loop (For-Each) for Arrays
    • 6.3.1. Foreach Loop Limitations
    • 6.3.2. Foreach Loop Algorithms
    • 6.3.3. Programming Challenge : SpellChecker 2
    • 6.3.4. Summary
  • 6.4. Array Algorithms (FRQs)
    • 6.4.1. Free Response - Horse Barn A
    • 6.4.2. Free Response - Horse Barn B
    • 6.4.3. Free Response - Self Divisor B
    • 6.4.4. Free Response - Sound A
    • 6.4.5. Free Response - Sound B
    • 6.4.6. Free Response - Number Cube A
    • 6.4.7. Free Response - Number Cube B
  • 6.5. Unit 6 Summary
    • 6.5.1. Concept Summary
    • 6.5.2. Java Keyword Summary
    • 6.5.3. Vocabulary Practice
    • 6.5.4. Common Mistakes
  • 6.6. Mixed Up Code Practice
  • 6.7. Code Practice with Arrays
    • 6.7.1. More Practice
  • 6.8. Multiple-Choice Exercises
    • 6.8.1. Easier Multiple Choice Questions
    • 6.8.2. Medium Multiple Choice Questions
    • 6.8.3. Hard Multiple Choice Questions
  • 6.9. Practice Exam for Arrays
• 7. ArrayList
  • 7.1. Intro to ArrayLists
    • 7.1.1. Import Package
    • 7.1.2. Declaring and Creating ArrayLists
    • 7.1.3. Programming Challenge : FRQ Digits
    • 7.1.4. Summary
  • 7.2. ArrayList Methods
    • 7.2.1. Size()
    • 7.2.2. Add(obj) to an ArrayList
    • 7.2.3. Add(index,obj) in an ArrayList
    • 7.2.4. Remove(index) from ArrayList
    • 7.2.5. ArrayList get/set Methods
    • 7.2.6. Comparing arrays and ArrayLists
    • 7.2.7. Programming Challenge : Array to ArrayList
    • 7.2.8. Summary
  • 7.3. Traversing ArrayLists with Loops
    • 7.3.1. Enhanced For Each Loop
    • 7.3.2. For Loop
    • 7.3.3. While Loop
    • 7.3.4. ArrayList of Student Objects
    • 7.3.5. Programming Challenge : FRQ Word Pairs
    • 7.3.6. Summary
  • 7.4. ArrayList Algorithms
    • 7.4.1. Free Response - String Scramble B
    • 7.4.2. Free Response - Climbing Club A
    • 7.4.3. Free Response - Climbing Club B
    • 7.4.4. Free Response - Climbing Club C
    • 7.4.5. Free Response - CookieOrder A
    • 7.4.6. Free Response - CookieOrder B
    • 7.4.7. Free Response - StringFormatter A
    • 7.4.8. Free Response - StringFormatter B
    • 7.4.9. Free Response - Delimiters A
    • 7.4.10. Free Response - Delimiters B
    • 7.4.11. Free Response - Grid World A (Not Complete)
  • 7.5. Searching Algorithms
    • 7.5.1. Sequential Search
    • 7.5.2. Binary Search
    • 7.5.3. Runtimes
    • 7.5.4. Programming Challenge : Search Runtimes
    • 7.5.5. Summary
  • 7.6. Sorting Algorithms
    • 7.6.1. Selection Sort
    • 7.6.2. Insertion Sort
    • 7.6.3. Programming Challenge : Sort Runtimes
    • 7.6.4. Summary
  • 7.7. Ethics of Data Collection and Data Privacy
    • 7.7.1. POGIL Groupwork: Data Privacy
    • 7.7.2. Summary
  • 7.8. ArrayList Summary
    • 7.8.1. Concept Summary
    • 7.8.2. Vocabulary Practice
    • 7.8.3. Common Mistakes
  • 7.9. Mixed Up Code Practice
  • 7.10. Code Practice with ArrayLists
  • 7.11. Multiple-Choice Exercises
    • 7.11.1. Easier Multiple Choice Questions
    • 7.11.2. Medium Multiple Choice Questions
    • 7.11.3. Hard Multiple Choice Questions
    • 7.11.4. Easier Search/Sort Multiple Choice Questions
    • 7.11.5. Medium Search/Sort Multiple Choice Questions
    • 7.11.6. Hard Search/Sort Multiple Choice Questions
  • 7.12. College Board Celebrity and Data Labs
• 8. 2D Arrays
  • 8.1. Two-dimensional (2D) Arrays
    • 8.1.1. 2D Arrays (Day 1)
    • 8.1.2. Array Storage
    • 8.1.3. How Java Stores 2D Arrays
    • 8.1.4. Declaring 2D Arrays
    • 8.1.5. Set Value(s) in a 2D Array (Day 2)
    • 8.1.6. Initializer Lists for 2D Arrays
    • 8.1.7. Get a Value from a 2D Array
    • 8.1.8. Programming Challenge : ASCII Art
    • 8.1.9. Summary
    • 8.1.10. 2D Arrays Game
  • 8.2. Traversing 2D Arrays (nested loops)
    • 8.2.1. Nested Loops for 2D Arrays (Day 1)
    • 8.2.2. Getting the Number of Rows and Columns
    • 8.2.3. Looping Through a 2D Array
    • 8.2.4. AP Practice
    • 8.2.5. Enhanced For-Each Loop for 2D Arrays (Day 2)
    • 8.2.6. 2D Array Algorithms
    • 8.2.7. Programming Challenge : Picture Lab
    • 8.2.8. Summary
    • 8.2.9. AP Practice
    • 8.2.10. 2D Arrays and Loops Game
  • 8.3. 2D Arrays Summary
    • 8.3.1. Concept Summary
    • 8.3.2. Vocabulary Practice
    • 8.3.3. Common Mistakes
  • 8.4. Mixed Up Code Practice
  • 8.5. Code Practice with 2D Arrays
  • 8.6. Free Response Questions
    • 8.6.1. Free Response - Gray Image A
    • 8.6.2. Free Response - Gray Image B
    • 8.6.3. Free Response - Route Cipher A
    • 8.6.4. Free Response - Route Cipher B
  • 8.7. Multiple-Choice Exercises
    • 8.7.1. Easier Multiple Choice Questions
    • 8.7.2. Medium Multiple Choice Questions
    • 8.7.3. Hard Multiple Choice Questions
    • 8.7.4. More Practice
  • 8.8. College Board Labs for 2D Arrays
    • 8.8.1. Picture Lab Day 3: Exploring a Picture (not complete)
    • 8.8.2. Picture Lab Day 4: 2D Arrays in Java (not complete)
• 9. Inheritance
  • 9.1. Inheritance, Superclass, Subclass
    • 9.1.1. Inheritance (Day 1)
    • 9.1.2. Subclass extends Superclass
    • 9.1.3. Why Use Inheritance?
    • 9.1.4. is-a vs. has-a (Day 2)
    • 9.1.5. is-a Substitution Test
    • 9.1.6. Programming Challenge : Online Store
    • 9.1.7. Summary
  • 9.2. Inheritance and Constructors
    • 9.2.1. Programming Challenge : Square is-a Rectangle
    • 9.2.2. Summary
  • 9.3. Overriding Methods
    • 9.3.1. Overloading Methods
    • 9.3.2. Inherited Get/Set Methods
    • 9.3.3. Programming Challenge : Pet Sounds
    • 9.3.4. Summary
  • 9.4. super Keyword
    • 9.4.1. Programming Challenge : Customer Info
    • 9.4.2. Summary
  • 9.5. Inheritance Hierarchies
    • 9.5.1. Superclass References
    • 9.5.2. Superclass Method Parameters
    • 9.5.3. Superclass Arrays and ArrayLists
    • 9.5.4. Programming Challenge : Shopping Cart
    • 9.5.5. Summary
  • 9.6. Polymorphism
    • 9.6.1. Programming Challenge : Shopping Cart 2
    • 9.6.2. Summary
  • 9.7. Object Superclass
    • 9.7.1. toString() method
    • 9.7.2. equals Method
    • 9.7.3. Overriding the equals Method
    • 9.7.4. Programming Challenge : Savings Account
    • 9.7.5. Summary
  • 9.8. Inheritance Summary
    • 9.8.1. Concept Summary
    • 9.8.2. Java Keyword Summary
    • 9.8.3. Vocabulary Practice
    • 9.8.4. Common Mistakes
  • 9.9. Free Response Questions
    • 9.9.1. Free Response - Trio A
    • 9.9.2. Trio Student Solution 1
    • 9.9.3. Trio Student Solution 2
    • 9.9.4. Trio Student Solution 3
  • 9.10. Mixed Up Code Practice
  • 9.11. Code Practice with Object Oriented Concepts
  • 9.12. Multiple-Choice Exercises
    • 9.12.1. Easier Multiple Choice Questions
    • 9.12.2. Medium Multiple Choice Questions
    • 9.12.3. Hard Multiple Choice Questions
    • 9.12.4. More Practice
  • 9.13. College Board Celebrity Lab
• 10. Recursion
  • 10.1. Recursion
    • 10.1.1. What is Recursion? (Day 1)
    • 10.1.2. Why use Recursion?
    • 10.1.3. Factorial Method
    • 10.1.4. Base Case
    • 10.1.5. Tracing Recursive Methods (Day 2)
    • 10.1.6. Tracing Challenge : Recursion
    • 10.1.7. Summary
  • 10.2. Recursive Searching and Sorting
    • 10.2.1. Recursive Binary Search
    • 10.2.2. Merge Sort
    • 10.2.3. Tracing Challenge : Recursive Search and Sort
    • 10.2.4. Summary
  • 10.3. Recursion Summary
    • 10.3.1. Concept Summary
    • 10.3.2. Vocabulary Practice
    • 10.3.3. Common Mistakes
  • 10.4. Mixed Up Code Practice
  • 10.5. More Mixed Up Code Practice
  • 10.6. Code Practice for Recursion
  • 10.7. Exercises
    • 10.7.1. Base Case Practice
    • 10.7.2. Easier Multiple Choice Questions
    • 10.7.3. Medium Multiple Choice Questions
    • 10.7.4. Hard Multiple Choice Questions
• 11. Post Test and Survey
  • 11.1. Post Test
  • 11.2. Post-Survey
• 12. Preparing for the Exam
  • 12.1. Preparing for the AP CS A Exam
  • 12.2. Exam 1 for the AP CS A Exam (not timed)
  • 12.3. Exam 2 for the AP CS A Exam (not timed)
  • 12.4. Exam 3 for the AP CS A Exam (not timed)
  • 12.5. Exam 4 for the AP CS A Exam (not timed)
  • 12.6. Exam 5 for the AP CS A Exam (not timed)
  • 12.7. Exercises
• 13. Timed Multiple-Choice Exams
  • 13.1. Practice Exam 1 for the AP CS A Exam
  • 13.2. Practice Exam 2 for the AP CS A Exam
  • 13.3. Practice Exam 3 for the AP CS A Exam
  • 13.4. Practice Exam X
  • 13.5. AP Bowl 2021 - Part A
• 14. Mixed Up Code - Free Response Practice
  • 14.1. RandomStringChooser - Part A Parsons
    • 14.1.1. Mixed Up Code Practice
    • 14.1.2. More Mixed Up Code Practice
  • 14.2. RandomStringChooser - Part A
    • 14.2.1. Try and Solve It - Again
  • 14.3. RandomStringChooser - Part B Parsons
  • 14.4. RandomStringChooser - Part B - 2nd time
    • 14.4.1. Try and Solve It - Again
  • 14.5. Exercises
• 15. Free Response Practice
  • 15.1. RandomStringChooser - Part A
    • 15.1.1. Try and Solve It
  • 15.2. RandomStringChooser - Part B
    • 15.2.1. Try and Solve It
  • 15.3. StringCoder - Part A
    • 15.3.1. Try and Solve It
  • 15.4. StringCoder - Part B
    • 15.4.1. Try and Solve It
  • 15.5. StudentAnswerSheet - Part A
    • 15.5.1. Try and Solve It
  • 15.6. StudentAnswerSheet - Part B
    • 15.6.1. Try and Solve It
  • 15.7. SkyView - Part A
    • 15.7.1. Try and Solve It
  • 15.8. SkyView - Part B
    • 15.8.1. Try and Solve It
  • 15.9. Hidden Word - Write Class
    • 15.9.1. Try and Solve It
  • 15.10. ArrayTester - Part A
    • 15.10.1. Try and Solve It
  • 15.11. ArrayTester - Part B
    • 15.11.1. Try and Solve It
  • 15.12. NumberGroup - Part B
    • 15.12.1. Try and Solve It
  • 15.13. NumberGroup - Part C
    • 15.13.1. Try and Solve It
  • 15.14. Exercises
• 16. Stories
  • 16.1. Challenges In Computing
    • 16.1.1. Impostor Syndrome
    • 16.1.2. A Lack of Diversity
  • 16.2. Meet The Interviewees
    • 16.2.1. Anaya Taylor
    • 16.2.2. Bryan Hickerson
    • 16.2.3. Briceida Mariscal
    • 16.2.4. Carla De Lira
    • 16.2.5. Camille Mbayo
    • 16.2.6. Destini Deinde-Smith
    • 16.2.7. Eric Espinoza
    • 16.2.8. Dr. Gloria Opoku-Boateng
    • 16.2.9. Dr. Juan Gilbert
    • 16.2.10. Luisa Morales
    • 16.2.11. Lucas Vocos
    • 16.2.12. Lien Diaz
    • 16.2.13. Milly Rodriguez
    • 16.2.14. Dr. Nettrice Gaskins

Index

• Index

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(last revised 11/12/2021)

© Copyright 2015 Barb Ericson, Univ. Michigan, 2019 revised by Beryl Hoffman (Elms College). Created using Runestone.

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