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Points

Activity Points
Primitive Types
1.1 Why Programming? Why Java?
1.1.1 Printing in Java 1
1.1.2 Printing in Java 5
1.1.3 Hello World 1
1.1.4 Printing Multiple Lines 1
1.1.5 Welcome Program 5
1.1.6 ASCII Art 5
1.1.7 Fixing a Paragraph 5
1.1.8 Heating Up 5
1.1.9 Personal Timeline 5
1.2 Variables and Data Types
1.2.1 Variables and Types 1
1.2.2 Variables and Types 5
1.2.3 Variables 1
1.2.4 Using Final 1
1.2.5 Our First Integer 5
1.2.6 Variables and Types Pt. 2 1
1.2.7 Variables and Types Pt. 2 5
1.2.8 Swapping Two Values 5
1.2.9 Answering Questions 5
1.2.10 Team Rankings 5
1.3 Expressions and Assignment Statements
1.3.1 Arithmetic Expressions 1
1.3.2 Arithmetic Expressions 5
1.3.3 Calculator 1
1.3.4 Temperature Conversion 1
1.3.5 Tricky Java 1
1.3.6 Weight of a Pyramid 5
1.3.7 Add Fractions 5
1.3.8 Freely Falling Bodies 5
1.4 Compound Assignment Operators
1.4.1 Compound Assignment Operators 1
1.4.2 Compound Assignment Operators 5
1.4.3 All Functions Calculator 1
1.4.4 Increase/Decrease by 1 1
1.4.5 Work Shift 5
1.4.6 Personalized T-shirts 5
1.5 User Input
1.5.1 User Input 1
1.5.2 User Input Quiz 5
1.5.3 Using the Scanner Class 1
1.5.4 Increase/Decrease by 1 (User Input) 1
1.5.5 int Before String 5
1.5.6 Personalized T-shirts (User Input) 5
1.5.7 Night Out 5
1.5.8 Test Score Calculator 5
1.5.9 MLA Citation 5
1.6 Casting and Ranges of Variables
1.6.1 Casting 1
1.6.2 Casting 5
1.6.3 Casting 1
1.6.4 Casting to an Int 5
1.6.5 Casting to a Double 5
1.6.6 Casting Order of Operations 1
1.6.7 Rounding Using Casting 1
1.6.8 Movie Ratings 5
1.6.9 Implicit Casting 1
1.6.10 Min and Max Values of Integers 1
1.6.11 Integer Overflow 5
1.7 Primitive Types Quiz
1.7.1 Primitive Types Quiz 25
Using Objects
2.1 Objects: Instances of Classes
2.1.1 Objects: Instances of Classes 1
2.1.2 Quiz: Classes and Objects 5
2.1.3 Multi-File Exercises in Java 1
2.1.4 Rectangle Skeleton 1
2.1.5 GrilledCheese Skeleton 1
2.1.6 Shark Skeleton 1
2.1.7 Free Response: What instance variables? 5
2.1.8 Pizza Instance Variables 5
2.1.9 Game Skeleton 5
2.2 Creating and Storing Objects (Instantiation)
2.2.1 Creating and Storing Objects 1
2.2.2 Quiz: Constructors 5
2.2.3 The Rectangle Class 1
2.2.4 The Point Class 1
2.2.5 The Student Class 1
2.2.6 Using the Rectangle Class 5
2.2.7 New Student Field 5
2.2.8 More Instance Variables 5
2.2.9 Pizza Time! 5
2.2.10 Instantiation Badge 1
2.3 Overloading
2.3.1 Method Overloading 1
2.3.2 Method Overloading Quiz 5
2.3.3 Overloaded Rectangle 1
2.3.4 Overloaded GrilledCheese 1
2.3.5 Null Pointer Exception 1
2.3.6 Plain Coffee 5
2.3.7 Custom Piñatas 5
2.3.8 Website Class 5
2.3.9 Empty References 5
2.4 Calling a Void Method
2.4.1 Calling a Void Method 1
2.4.2 Quiz: Void Methods 5
2.4.3 Area of a Rectangle 1
2.4.4 Program Flow 1
2.4.5 Hello! 5
2.4.6 Loose Change 5
2.4.7 Chat Bot 5
2.4.8 Greetings and Salutations 5
2.5 Calling a Void Method with Parameters
2.5.1 Calling a Void Method with Parameters 1
2.5.2 Methods and Parameters 5
2.5.3 Rectangle 1
2.5.4 Moving a Point 1
2.5.5 Using the Point Class 5
2.5.6 Calculator 1
2.5.7 Cricket Players 5
2.5.8 More Operations 5
2.5.9 Chat Bot 2.0 5
2.6 Calling a Non-void Method
2.6.1 Calling a Non-void Method 1
2.6.2 Quiz: Non-Void Methods 5
2.6.3 Rectangle 1
2.6.4 Desks in a Room 1
2.6.5 Activity Log 1
2.6.6 Number Games 5
2.6.7 Construction Costs 5
2.6.8 How Far Away is ...? 5
2.7 String Objects
2.7.1 String Objects 1
2.7.2 String Objects 5
2.7.3 Immutable Strings 1
2.7.4 String Concatenation 1
2.7.5 Rectangle Dimensions 1
2.7.6 Printing Equations 1
2.7.7 Pretty Printing Operations 5
2.7.8 Auto-fill 5
2.7.9 QuoteMachine 5
2.8 String Methods
2.8.1 String Methods 1
2.8.2 String Methods 4
2.8.3 Bigger Strings? 1
2.8.4 Chopping Strings 1
2.8.5 Object Concatenation 1
2.8.6 Speaking 5
2.8.7 toString for Animals 5
2.8.8 Organizing Class Roster 5
2.8.9 Concatenating Fractions 5
2.8.10 Word Games 5
2.9 Wrapper Classes: Integers and Doubles
2.9.1 Wrapper Classes 1
2.9.2 Quiz: Wrapper Classes 5
2.9.3 Creating Integers 1
2.9.4 Using Doubles 1
2.9.5 Autoboxing Example 1
2.9.6 Order Up! 5
2.9.7 Currency 5
2.9.8 Guess the number! 5
2.10 Using the Math Class
2.10.1 Using the Math Class 1
2.10.2 Quiz: Static Methods 5
2.10.3 Using the Math Class 1
2.10.4 Static Methods: Rectangle 1
2.10.5 Generating Random Numbers 1
2.10.6 Circle Area 5
2.10.7 The Unit Circle 5
2.10.8 Racing 5
2.11 Using Objects Quiz
2.11.1 Using Objects Quiz 25
Boolean Expressions and if Statements
3.1 Boolean Expressions and if Statements
3.1.1 Comparison Operators 1
3.1.2 Comparison Operators 5
3.1.3 Old Enough To Vote 1
3.1.4 Grade Range 1
3.1.5 Equality of Strings 1
3.1.6 Meeting Goals 5
3.1.7 Sugar Tax 5
3.1.8 Triple Double 5
3.2 if Statements and Control Flow
3.2.1 If Statements 1
3.2.2 If Statements 5
3.2.3 Can Vote 1
3.2.4 Negative Numbers 1
3.2.5 Rectangle 1
3.2.6 Discounts 5
3.2.7 Sweet or Unsweet? 5
3.2.8 Cooking 5
3.2.9 Rating 5
3.3 if-else Statements
3.3.1 If-Else Statements 1
3.3.2 If-Else 5
3.3.3 Bill with add tip 1
3.3.4 Even and Odd 1
3.3.5 Running Speed 5
3.3.6 Battleships Move 5
3.3.7 Ratings 5
3.3.8 Player Score 5
3.4 else if Statements
3.4.1 else-if Statements 1
3.4.2 else-if 5
3.4.3 Add Tip 1
3.4.4 Add Tip - 8 or 4 Customers 1
3.4.5 Add Tip - 8, 4, 2 Customers 1
3.4.6 Positive, Negative, or Zero 5
3.4.7 Salmon Spawn 5
3.4.8 Berries 5
3.4.9 Battleships 5
3.5 Compound Boolean Expressions
3.5.1 Compound Boolean Expressions 1
3.5.2 Logical Operators 5
3.5.3 Light Switch 1
3.5.4 Number in Range 1
3.5.5 Pizza Slices 1
3.5.6 Roller Coaster 5
3.5.7 Compound Roller Coaster 5
3.5.8 Divisibility 5
3.5.9 Find the Median 5
3.6 Equivalent Boolean Expressions
3.6.1 Equivalent Boolean Expressions 1
3.6.2 De Morgan's Laws 5
3.6.3 De Morgan AND 1
3.6.4 De Morgan OR 1
3.6.5 Amusement Park 5
3.6.6 Negative Numbers 5
3.6.7 Odd and Even 5
3.6.8 Odd and Even Free Response 5
3.7 Comparing Objects
3.7.1 Comparing Objects 1
3.7.2 Comparing Objects 5
3.7.3 Comparing Strings 1
3.7.4 Comparing Rectangles 1
3.7.5 Null Test 1
3.7.6 Identify Aliases 1
3.7.7 String Variable Trace 5
3.7.8 String Trace 5
3.7.9 Three Strings 5
3.7.10 Comparing Circles 5
3.8 Boolean Expressions and if Statements Quiz
3.8.1 Boolean Expressions and If Statements Quiz 25
Iteration
4.1 Iteration
4.1.1 While Loops 1
4.1.2 While Loops 5
4.1.3 While Loop Countdown 1
4.1.4 Get Down to One 1
4.1.5 Running Average 1
4.1.6 Making Taffy 5
4.1.7 Guess the Number 5
4.1.8 Divisibility 5
4.1.9 Max and Min Values 5
4.2 For Loops
4.2.1 For Loops 1
4.2.2 For Loops 5
4.2.3 For Loop 1
4.2.4 Countdown 1
4.2.5 Count By Twos 1
4.2.6 Print the Odds 5
4.2.7 Repeat 5
4.2.8 Replace WHILE with FOR Loop 5
4.2.9 Replace FOR Loop with WHILE Loop 5
4.2.10 Multiplication Table 5
4.3 Developing Algorithms Using Strings
4.3.1 Developing Algorithms Using Strings 1
4.3.2 Developing Algorithms Using Strings 5
4.3.3 Traversing Strings 1
4.3.4 Replace Characters 1
4.3.5 Reverse String 1
4.3.6 Replace Letter 5
4.3.7 Password Checker 5
4.3.8 Finding Palindromes 5
4.3.9 Fixing Grammar 5
4.3.10 Teen Talk 5
4.3.11 String Processing Badge 5
4.4 Nested Iteration
4.4.1 Nested Iteration 1
4.4.2 Nested Iteration 5
4.4.3 Make a Rectangle 1
4.4.4 Nested Loop Iteration Counts 1
4.4.5 Inverted Triangle 1
4.4.6 Upright Number Triangle 5
4.4.7 Make a Tree 5
4.4.8 Multiplication Table 5
4.5 Informal Code Analysis
4.5.1 Informal Code Analysis 1
4.5.2 Informal Code Analysis 5
4.5.3 Loop Execution Count 1
4.5.4 While Loop Time 1
4.5.5 For Loop Time 1
4.5.6 Time Comparisons 5
4.5.7 Improving findChar Speed 5
4.5.8 Improving findChar Speed Check 1
4.5.9 findChar Speed Reflection 5
4.6 Iteration Quiz
4.6.1 Iteration Quiz 25
Writing Classes
5.1 Writing Classes
5.1.1 Anatomy of Classes 1
5.1.2 Quiz: Access Modifiers 5
5.1.3 Rectangle Getter Methods 1
5.1.4 Access for DNA Class 5
5.1.5 Access for Employee Class 5
5.1.6 Fixing Circle 5
5.2 Constructors
5.2.1 Constructors 1
5.2.2 Quiz: Constructors 5
5.2.3 SuperHero Class 1
5.2.4 Initializing an Object without a Constructor 1
5.2.5 Batting Average 5
5.2.6 Dog Class 5
5.2.7 Student Overload 5
5.2.8 SchoolClub Class 5
5.3 Documentation with Comments
5.3.1 Documentation with Comments 1
5.3.2 Quiz: Comments 5
5.3.3 Comments for Debugging 1
5.3.4 Power Class with Comments 1
5.3.5 Commenting Activity Tracker 5
5.3.6 Commenting Activity Log 5
5.3.7 C.Y.O.A. Layout 5
5.3.8 C.Y.O.A. Finishing the story 5
5.4 Accessor Methods
5.4.1 Accessor Methods 1
5.4.2 Quiz: Accessors 5
5.4.3 Student Getter Methods 1
5.4.4 SuperHero Class with Secret Identity 1
5.4.5 Add Some Getter Methods 5
5.4.6 Full Dragon Class 5
5.4.7 A Different Dragon Class 5
5.4.8 A Chef's Best Meal 5
5.5 Mutator Methods
5.5.1 Mutator Methods 1
5.5.2 Quiz: Mutators 5
5.5.3 SuperHero Class with Mutator Methods 1
5.5.4 Student Setters 1
5.5.5 Rectangle class 5
5.5.6 Full Fraction Class 5
5.5.7 Weekly Routine 5
5.6 Writing Methods
5.6.1 Writing Methods 1
5.6.2 Quiz: Writing Methods 5
5.6.3 Triangle Class 1
5.6.4 Baseball Player Class 1
5.6.5 Distance Conversions 5
5.6.6 Food App Demo 5
5.6.7 Car Class 5
5.6.8 Combination Lock FRQ 1
5.7 Static Variables and Methods
5.7.1 Static Variables and Methods 1
5.7.2 Quiz: Static Methods 5
5.7.3 Static SuperHero 1
5.7.4 Static Variables: Circle 1
5.7.5 Randomizer Class 5
5.7.6 Rock, Paper, Scissors! 5
5.7.7 In the Game? 5
5.8 Scope and Access
5.8.1 Scope and Access 1
5.8.2 Quiz: Local Variables and Scope 5
5.8.3 Instance Variable Scope 1
5.8.4 Local Variable Scope 1
5.8.5 Variable Shadowing 1
5.8.6 Method Decomposition with Trivia 1
5.8.7 Scope 5
5.8.8 Which Variables Exist? 5
5.8.9 Broken Calculator 5
5.9 this Keyword
5.9.1 this Keyword 1
5.9.2 Quiz: this Keyword 5
5.9.3 Rectangles and this 1
5.9.4 Student and this 1
5.9.5 Write Your Own CodeHS 5
5.9.6 Song Class 5
5.9.7 Fraction Math 5
5.10 Ethical and Social Implications of Computing
5.10.1 Implications of Computing Systems 1
5.10.2 Computing and Your Life 5
5.10.3 Quiz: Ethical and Social Impact 5
5.10.4 ACM General Ethical Principles 1
5.10.5 ACM General Ethical Principles 5
5.10.6 Bias in Facial Recognition 1
5.10.7 Bias in Facial Recognition 5
5.10.8 Self-driving Cars 1
5.10.9 Self-driving Cars 5
5.11 Writing Classes Quiz
5.11.1 Writing Classes Quiz 25
Array
6.1 Array
6.1.1 Introduction to Arrays 1
6.1.2 Quiz: Arrays 5
6.1.3 Making an Array 1
6.1.4 Make an Empty Array 1
6.1.5 Indexing Into an Array 1
6.1.6 Our First Array 5
6.1.7 Set Scores 5
6.1.8 Last Element in Array 5
6.1.9 Snap Shot Splash Screen 5
6.2 Traversing Arrays
6.2.1 Using Arrays 1
6.2.2 Quiz: Using Arrays 5
6.2.3 Iterating Over An Array - For Loop 1
6.2.4 Iterating Over An Array - While Loop 1
6.2.5 Array Out of Bounds 1
6.2.6 Finding a Target Value 1
6.2.7 Print Array 5
6.2.8 Print Odd Array Indices 5
6.2.9 Find Index of a String 5
6.2.10 Fibonacci Sequence 5
6.3 Enhanced for Loop for Arrays
6.3.1 Enhanced For Loop for Arrays 1
6.3.2 Enhanced For Loop for Arrays 5
6.3.3 Enhanced For Loop 1
6.3.4 Classroom Array 1
6.3.5 Updating Values in a Loop 1
6.3.6 Print Odds 5
6.3.7 Largest Value 5
6.3.8 Classroom Array 5
6.3.9 Array Average 5
6.4 Developing Algorithms Using Arrays
6.4.1 Developing Algorithms Using Arrays 1
6.4.2 Developing Algorithms Using Arrays 5
6.4.3 Finding the Minimum Value 1
6.4.4 Reordering an Array 1
6.4.5 Finding Duplicates 1
6.4.6 Find the Median 5
6.4.7 Find the Last Multiple of 3 5
6.4.8 Most Improved 5
6.4.9 Car Showroom 10
6.5 Array Quiz
6.5.1 Array Quiz 20
ArrayList
7.1 ArrayList
7.1.1 ArrayLists 1
7.1.2 Quiz: ArrayList 5
7.1.3 Initializing an ArrayList 1
7.1.4 Array vs. ArrayList Initialization 1
7.1.5 Arrays vs. ArrayLists 5
7.1.6 Initializing an ArrayList 5
7.1.7 Car Inventory 5
7.2 ArrayList Methods
7.2.1 ArrayLists Methods 1
7.2.2 Quiz: ArrayList Methods 5
7.2.3 ArrayList and Java Primitives 1
7.2.4 ArrayList Methods 1
7.2.5 Array vs. ArrayList Methods 1
7.2.6 Get First Element 5
7.2.7 ArrayList of Even Numbers 5
7.2.8 Teacher Class List 5
7.2.9 Teacher Class List Methods 5
7.3 Traversing ArrayLists
7.3.1 Traversing ArrayLists 1
7.3.2 Quiz: Traversing Arrays 5
7.3.3 Reading List 1
7.3.4 While Loop ArrayList Traversal 1
7.3.5 ArrayList Traversing Error 1
7.3.6 Traversing Odds 5
7.3.7 ArrayList Helper Methods 5
7.3.8 Road Trip! 5
7.4 Developing Algorithms using ArrayLists
7.4.1 Developing Algorithms Using ArrayLists 1
7.4.2 Quiz: Developing Algorithms 5
7.4.3 Traversing ArrayLists Simultaneously 1
7.4.4 Inserting Elements While Traversing ArrayLists 1
7.4.5 ArrayList equals 5
7.4.6 Airline Tickets 5
7.4.7 Billboard Top 10 5
7.4.8 User Data Cleanup 5
7.5 Searching
7.5.1 Linear Search 1
7.5.2 Quiz: Linear Search 5
7.5.3 Linear Search 1
7.5.4 Linear Search on ArrayList with While Loop 5
7.5.5 Fantasy Football Roster 5
7.5.6 Card Collection FRQ 1
7.6 Sorting
7.6.1 Selection Sort 1
7.6.2 Selection Sort 2
7.6.3 Selection Sort 1
7.6.4 Explore Selection Sort 5
7.6.5 Insertion Sort 1
7.6.6 Insertion Sort 3
7.6.7 Insertion Sort 1
7.6.8 Visualizing Algorithms 1
7.6.9 Explore Insertion Sort 5
7.6.10 Selection Sort vs. Insertion Sort Run Time 5
7.6.11 Selection Sort vs. Insertion Sort 5
7.6.12 Phonebook 5
7.7 Ethical Issues Around Data Collection
7.7.1 Ethical Issues Around Data Collection 1
7.7.2 Ethical Issues Around Data Collection 5
7.7.3 The Curly Fry Conundrum 1
7.7.4 Reflection 5
7.7.5 Guidelines on Ethical Data Use 1
7.7.6 Issue News Article 5
7.7.7 ArrayList Badge 5
7.8 ArrayList Quiz
7.8.1 ArrayList Quiz 25
2D Array
8.1 2D Arrays
8.1.1 2D Arrays 1
8.1.2 Quiz: 2D Arrays 5
8.1.3 GradeBook 1
8.1.4 ChessBoard 1
8.1.5 Manipulating 2D Arrays 5
8.1.6 Complete Chessboard 5
8.1.7 Tic Tac Toe Board 5
8.2 Traversing 2D Arrays
8.2.1 Traversing 2D Arrays 1
8.2.2 Quiz: Traversing 2D Arrays 5
8.2.3 Traversing Gradebook 1
8.2.4 Linear Search 2D Arrays 1
8.2.5 Row vs. Column Major 1
8.2.6 Row vs. Column Major 5
8.2.7 Sum Rows in a 2D Array 5
8.2.8 Tic Tac Toe Methods 5
8.2.9 Finalizing Tic Tac Toe 5
8.2.10 2D Array Badge 5
8.3 2D Array Quiz
8.3.1 2D Array Quiz 25
Inheritance
9.1 Inheritance
9.1.1 Inheritance 1
9.1.2 Quiz: Subclasses and Superclasses 5
9.1.3 Person Superclass 1
9.1.4 Vehicle Superclass 1
9.1.5 High School Student 1
9.1.6 Person / Student Object 5
9.1.7 Books 5
9.1.8 Computers 5
9.1.9 More Animals! 5
9.2 Writing Constructors for Subclasses
9.2.1 Writing Constructors for Subclasses 1
9.2.2 Quiz: Writing Constructors for Subclasses 5
9.2.3 Student Subclass 1
9.2.4 Shape Class 1
9.2.5 Implicit Call to Super 1
9.2.6 Students 5
9.2.7 Instruments 5
9.2.8 Foods 5
9.2.9 Clothing Store 5
9.3 Overriding Methods
9.3.1 Overriding Methods 1
9.3.2 Quiz: Overriding Methods 5
9.3.3 Square is a Rectangle 1
9.3.4 Student toString 1
9.3.5 Restaurant Bills 1
9.3.6 Dogs Bark 5
9.3.7 Electric Cars 5
9.3.8 Online Companies 5
9.4 super Keyword
9.4.1 super Keyword 1
9.4.2 Quiz: super Keyword 5
9.4.3 Square Class 1
9.4.4 Animal Class 1
9.4.5 Apple Pie 1
9.4.6 Squares 5
9.4.7 Bank Accounts 5
9.4.8 Employees 5
9.4.9 Student Test Scores 5
9.5 Creating References Using Inheritance
9.5.1 Creating References Using Inheritance Hierarchies 1
9.5.2 Quiz: References Using Inheritance Hierarchies 5
9.5.3 Animal Sounds 1
9.5.4 Shape Areas 1
9.5.5 Person Class 1
9.5.6 Pies 5
9.5.7 Creating .equals 5
9.5.8 Online Companies Revisited 5
9.5.9 Assignments 5
9.6 Polymorphism
9.6.1 Polymorphism 1
9.6.2 Quiz: Polymorphism 5
9.6.3 Using Person Methods 1
9.6.4 Modified Student Class 1
9.6.5 Vehicle Methods 1
9.6.6 Which Team? 5
9.6.7 Cars 5
9.6.8 Library Books 5
9.6.9 Fun with Solids 5
9.7 Object Superclass
9.7.1 Object Superclass 1
9.7.2 Quiz: Object Superclass 5
9.7.3 Default Values 1
9.7.4 Override toString 1
9.7.5 Override equals 1
9.7.6 Equal? 5
9.7.7 Equals? - Part 2 5
9.7.8 Equal Rectangles 5
9.7.9 2D Array Tester 5
9.8 Inheritance Quiz
9.8.1 Inheritance Quiz 25
Recursion
10.1 Recursion
10.1.1 Recursion 1
10.1.2 Quiz: Recursion 5
10.1.3 Summing 1
10.1.4 Sum Array 1
10.1.5 Fibonacci Recursion 1
10.1.6 Factorial 5
10.1.7 Countdown! 5
10.1.8 Recursive Minimum 5
10.1.9 Bacteria Cultures 5
10.2 Recursive Searching
10.2.1 Recursive Searching 1
10.2.2 Quiz: Recursive Searching 5
10.2.3 Binary Search 1
10.2.4 Binary Recursive 1
10.2.5 Binary vs Linear 1
10.2.6 Exploring Binary Searches 5
10.2.7 Comparing Binary Search and Linear Search 5
10.2.8 Maximum Iterations 5
10.3 Recursive Sorting
10.3.1 Recursive Sorting 1
10.3.2 Quiz: Recursive Sorting 5
10.3.3 Merge Sort 1
10.3.4 Sort Visualizer 1
10.3.5 Explore Merge Sort 5
10.3.6 Merge Sort Benchmark Testing 5
10.3.7 Recursive Calls 5
10.3.8 Sort Benchmark Testing 5
10.4 Recursion Quiz
10.4.1 Recursion Quiz 25
Introduction to Programming in Java with Karel the Dog
11.1 Introduction to Programming With Karel
11.1.1 Introduction to Programming With Karel 1
11.1.2 Quiz: Karel Commands 5
11.1.3 Our First Karel Program 1
11.1.4 Your First Karel Program 5
11.1.5 Short Stack 5
11.2 More Basic Karel
11.2.1 More Basic Karel 1
11.2.2 More Basic Karel 5
11.2.3 Tennis Ball Square 1
11.2.4 Make a Tower 5
11.2.5 Pyramid of Karel 5
11.3 Java Programs and the Run Method
11.3.1 Writing a Java Program 1
11.3.2 Run Method 5
11.3.3 Square Karel 1
11.3.4 Tower Karel 5
11.3.5 Gold Medal Karel 5
11.3.6 Maze Karel 5
11.4 Karel Can't Turn Right
11.4.1 Karel Can't Turn Right 1
11.4.2 Karel Can't Turn Right 5
11.4.3 Tower and Turn Right 1
11.4.4 Slide Karel 5
11.4.5 Fireman Karel 5
11.4.6 Right Turn Karel Badge 0
11.5 Methods in Karel
11.5.1 Methods in Karel 1
11.5.2 Methods in Karel 5
11.5.3 Turn Around 1
11.5.4 Planting Bushes 5
11.5.5 Mario Karel 5
11.6 Top Down Design and Decomposition in Karel
11.6.1 Top Down Design and Decomposition in Karel 1
11.6.2 Top Down Design and Decomposition 5
11.6.3 Hurdle Karel 1
11.6.4 The Two Towers 5
11.6.5 Planting Flowers 5
11.7 Commenting Your Code
11.7.1 Commenting Your Code 1
11.7.2 Commenting Your Code 5
11.7.3 Hurdle Karel (Comments) 1
11.7.4 The Two Towers + Comments 5
11.8 Super Karel
11.8.1 Super Karel 1
11.8.2 Super Karel 5
11.8.3 Hurdle Karel (with SuperKarel) 1
11.8.4 The Two Towers + SuperKarel 5
11.8.5 Super Karel Badge 0
11.9 For Loops
11.9.1 For Loops 1
11.9.2 For Loops 5
11.9.3 Repeated Move 1
11.9.4 Put Down Tennis Balls 1
11.9.5 Marathon Karel 5
11.9.6 Take 'em All 5
11.9.7 Dizzy Karel 5
11.9.8 For Loop Square 5
11.9.9 Planting Flowers 5
11.9.10 Lots of Hurdles 5
11.10 While Loops in Karel
11.10.1 While Loops in Karel 1
11.10.2 While Loops in Karel 5
11.10.3 Move to Wall 1
11.10.4 Follow The Yellow Ball Road 5
11.10.5 Just Keep Spinning 5
11.10.6 Lay Row of Tennis Balls 5
11.10.7 Big Tower 5
11.11 If Statements
11.11.1 If Statements 1
11.11.2 If Statements Quiz 5
11.11.3 If Statements 1
11.11.4 Safe Take Ball 1
11.11.5 Is There a Ball? 5
11.12 If/Else Statements
11.12.1 If/Else Statements 1
11.12.2 If/Else Statements 5
11.12.3 Flip Karel 1
11.12.4 Fix It Karel 5
11.12.5 Invert 5
11.12.6 Conditional Karel Badge 0
11.13 Control Structures Example
11.13.1 Control Structures Example 1
11.13.2 Control Structures Example 5
11.13.3 Cleanup Karel 1
11.13.4 Random Hurdles 5
11.13.5 Fix It Karel 5
11.14 More Karel Examples and Testing
11.14.1 More Karel Examples and Testing 1
11.14.2 Move Tennis Ball Stack 1
11.14.3 Climbing Karel 1
11.15 How to Indent Your Code
11.15.1 How to Indent Your Code 1
11.15.2 How to Indent Your Code 5
11.15.3 Dance and Clean Karel 1
11.15.4 Diagonal 5
11.15.5 Staircase 5
11.15.6 Karel Exercises Badge 0
11.16 Karel Challenges
11.16.1 Fetch 10
11.16.2 Racing Karel 10
11.16.3 Tower Builder 10
11.16.4 Super Cleanup Karel 10
11.16.5 Double Tennis Balls 10
11.16.6 Midpoint Karel 10
11.16.7 Karel Challenges Badge 0
11.17 Karel Quiz
11.17.1 Karel Quiz 25
AP Test Practice
12.1 AP Practice Test 1
12.1.1 Final AP Review 25
12.1.2 Free Response 1a 10
12.1.3 Free Response 1b 10
12.1.4 Free Response 2a 10
12.1.5 Free Response 2b 10
12.1.6 Free Response 3a 10
12.1.7 Free Response 3b 5
12.1.8 Free Response 4a 5
12.1.9 Free Response 4b 5
12.1.10 AP Practice Test Badge 0
Java Pretest
13.1 Java Pretest
13.1.1 About the Pretest 1
13.1.2 Mindsets 0
13.1.3 Knowledge & Skills: Java 0
Java Posttest
14.1 Java Posttest
14.1.1 About the Posttest 1
14.1.2 Mindsets 0
14.1.3 Java Knowledge & Skills 0
Teacher Feedback
15.1 Teacher Feedback
15.1.1 Feedback Survey 5
Additional Exercises
16.1 Unit 3
16.1.1 Lesson 3.2 Air Hockey 1
16.1.2 Lesson 3.2 Constructions 5
16.1.3 Lesson 3.2 Game Bonus 5
16.1.4 Lesson 3.3 Floating Point Error 1
16.1.5 Lesson 3.3 Comparing Doubles 5
16.1.6 Lesson 3.4 Classifying the Rich 5
16.1.7 Lesson 3.4 Mesozoic Age 5
16.1.8 Lesson 3.4 Dinosaurs 10
16.1.9 Lesson 3.5 Salmon Season 5
16.1.10 Lesson 3.6 Used Car 5
16.1.11 Lesson 3.7 Changing Dogs 1
16.1.12 Lesson 3.7 Creating Strings with New 1
16.1.13 Lesson 3.7 Creating Strings with Literals 1
16.2 Unit 4
16.2.1 Lesson 4.1 Find Digits 5
16.2.2 Lesson 4.2 Factorial 5
16.2.3 Lesson 4.2 Five Little Ducks 5
16.2.4 Lesson 4.3 Fix the Sum 5
16.2.5 Lesson 4.5 Values Held in Variables 1
16.2.6 Lesson 4.5 Values Held in Variables 5
16.2.7 Lesson 4.5 Values Held In Variables 5
16.2.8 Lesson 4.5 Variable Trace 1
16.2.9 Lesson 4.5 Variable Trace 5
16.3 Unit 5
16.3.1 Lesson 5.10 Ethical Programmer Agreement 5
16.3.2 Lesson 5.10 Explore a Software Application 5
16.3.3 Lesson 5.10 Career Choice and Computing 5
16.4 Unit 7
16.4.1 The Congo Company - Marketing Analysis 5
16.4.2 The Congo Company - Strategy 5
16.4.3 The Congo Company - Optimization 5
Elevens
17.1 Elevens
17.1.1 Elevens Activity Guide 1
17.1.2 Activity 1: Design and Create a Card Class 5
17.1.3 Activity 2: Initial Design of a Deck Class 5
17.1.4 Activity 2 Questions 5
17.1.5 Activity 3: Shuffling the Cards in a Deck 5
17.1.6 Activity 3 Questions 5
17.1.7 Activity 4: Adding a Shuffle Method to the Deck 5
17.1.8 Activity 6: Playing Elevens 5
17.1.9 Activity 6 Questions 5
17.1.10 Activity 7: Elevens Board Class Design 5
17.1.11 Activity 7 Questions 5
17.1.12 Activity 8: Using an Abstract Board Class 5
17.1.13 Activity 8 Questions 5
17.1.14 Activity 9: Implementing the Elevens Board 5
17.1.15 Activity 9 Questions 5
Magpie
18.1 Magpie Lab
18.1.1 Magpie Student Guide 1
18.1.2 Activity 1: Chatbots 5
18.1.3 Activity 2: Introduction to Magpie 1
18.1.4 Activity 2: Modifying Magpie 5
18.1.5 Activity 2: Questions 5
18.1.6 Activity 3: Improving Keyword Detection 5
18.1.7 Activity 4: Responses that Transform Statements 5
Picture Lab
19.1 Picture Lab
19.1.1 Introduction & Student Guide 1
19.1.2 A1: Digital Pictures and Color 5
19.1.3 A2: Picking a Color 1
19.1.4 A2 Questions: Picking a Color 5
19.1.5 A3: Exploring a Picture 1
19.1.6 A3 Questions: Exploring a Picture 5
19.1.7 A4: Two-Dimensional Arrays in Java 5
19.1.8 A5: Interfaces 5
19.1.9 A5: Modifying a Picture 5
19.1.10 A6: Mirroring a Picture 5
19.1.11 A9: Edge Detection 5
Consumer Review Lab
20.1 Introduction
20.1.1 Consumer Review Lab Activity Guide 5
20.1.2 Review 5
20.1.3 Review Free Response 5
20.1.4 Check For Understanding 5
20.2 Sentiment Value and Star Ratings
20.2.1 Sentiment Value 5
20.2.2 Sentiment Value Free Response 5
20.3 Autogenerated Review
20.3.1 Autogenerate Review 5
20.3.2 Autogenerate Review Free Response 5
20.4 Create a Negative or Positive Review
20.4.1 Create a Negative or Positive Review 5
20.4.2 Create a Negative or Positive Review 5
20.5 Open Ended Activity!
20.5.1 Final Activity 5
20.5.2 Wrap Up 5
Celebrity Lab
21.1 Activity 1: Introduction to Celebrity
21.1.1 Introduction to Celebrity 5
21.2 Activity 2: The Celebrity Class: A Simple Version
21.2.1 Celebrity Class: A Simple Version 5
21.2.2 Celebrity Constructor 5
21.3 Activity 3: Putting it All Together
21.3.1 Set up Constructors 5
21.3.2 Setting up the Game 5
21.3.3 Complete Game Play Methods 5
21.3.4 Check Your Understanding 5
21.4 Activity 4: Extending the Celebrity Class
21.4.1 Extending the Celebrity Class 5
21.4.2 Literature Celebrity 5
21.4.3 Custom Celebrity 5
21.4.4 Updating CelebrityGame 5
21.4.5 Updating the GUI 5
21.5 Activity 5: Open Ended Activity
21.5.1 Open Ended Activity 5
Steganography Lab
22.1 Activity 1: Exploring Color
22.1.1 Steganography Student Lab 5
22.1.2 Picture Lab A1: Digital Pictures and Color 5
22.1.3 Exploring Color 5
22.1.4 Clearing Bits 5
22.1.5 Clearing Bits Responses 5
22.1.6 Changing Colors 5
22.1.7 Changing Colors Response 5
22.1.8 Setting Bits 5
22.2 Activity 2: Hiding and Revealing a Picture
22.2.1 Hiding and Revealing 5
22.2.2 Hiding and Revealing 5
22.3 Activity 3: Identifying a Hidden Picture
22.3.1 Identifying a Hidden Picture 5
22.3.2 Identify a Hidden Picture: Check Your Understanding 5
22.4 Activity 4: Hiding and Revealing a Text Message
22.4.1 Hiding and Revealing a Text Message Intro 5
22.4.2 Hiding and Revealing a Text Message 5
22.4.3 Hiding and Revealing; Check your Understanding 5
22.5 Activity 5: Open Ended Project
22.5.1 Open Ended Project 5
Deprecated Activities 08/25/21
23.1 Deprecated Activities 08/25/21
23.1.1 Welcome Program 5
23.1.2 ASCII Art 5
23.1.3 Heating Up 5
23.1.4 Answering Questions 5
23.1.5 Freely Falling Bodies 5
23.1.6 My Age 5
23.1.7 My Age (User Input) 5
23.1.8 Night Out 5
23.1.9 Casting to an Int 5
23.1.10 Phone Skeleton 5
23.1.11 Student GPA Field 5
23.1.12 Instance Variables for Your Dog 5
23.1.13 Plain Coffee 5
23.1.14 Empty References 5
23.1.15 Loose Change 5
23.1.16 Chat Bot 5
23.1.17 Basketball Players 5
23.1.18 Chat Bot 2.0 5
23.1.19 Number Games 5
23.1.20 Full Name 5
23.1.21 Speaking 5
23.1.22 toString for Flowers 5
23.1.23 Organizing Files 5
23.1.24 Guess the number! 5
23.1.25 Circle Area 5
23.1.26 Number Order 5
23.1.27 Discounts 5
23.1.28 Cooking 5
23.1.29 Positive or Negative 5
23.1.30 Battleships Move 5
23.1.31 Berries 5
23.1.32 Battleships 5
23.1.33 Find the Minimum 5
23.1.34 Odd Numbers 5
23.1.35 Three Strings 5
23.1.36 Guess the Number 5
23.1.37 Max and Min Values 5
23.1.38 Repeat 100 Times 5
23.1.39 Replace FOR Loop with WHILE Loop 5
23.1.40 Replace Letter 5
23.1.41 Teen Talk 5
23.1.42 Make a Tree 5
23.1.43 Access for Employee Class 5
23.1.44 Dog Class 5
23.1.45 C.Y.O.A. Layout 5
23.1.46 C.Y.O.A. Finishing the story 5
23.1.47 Text Messages Getter Methods 5
23.1.48 A Chef's Best Meal 5
23.1.49 Weekly Routine 5
23.1.50 Distance Conversions 5
23.1.51 How Many Players in the Game? 5
23.1.52 Scope 5
23.1.53 Write Your Own CodeHS 5
23.1.54 Our First Array 5
23.1.55 Last Element in Array 5
23.1.56 Print Array 5
23.1.57 Fibonacci Sequence 5
23.1.58 Classroom Array 5
23.1.59 Find the Last Multiple of 3 5
23.1.60 Most Improved 5
23.1.61 Car Inventory 5
23.1.62 Get First Element 5
23.1.63 ArrayList of Even Numbers 5
23.1.64 ArrayList Helper Methods 5
23.1.65 User Data Cleanup 5
23.1.66 Fantasy Football Roster 5
23.1.67 Phonebook 5
23.1.68 Manipulating 2D Arrays 5
23.1.69 Sum Rows in a 2D Array 5
23.1.70 Person / Student Object 5
23.1.71 Books 5
23.1.72 Students 5
23.1.73 Foods 5
23.1.74 Electric Cars 5
23.1.75 Squares 5
23.1.76 Bank Accounts 5
23.1.77 Pies 5
23.1.78 Assignments 5
23.1.79 Cars 5
23.1.80 Library Books 5
23.1.81 Equal? 5
23.1.82 Equals? - Part 2 5
23.1.83 Countdown! 5
23.1.84 Bacteria Cultures 5
23.1.85 Exploring Binary Searches 5
23.1.86 Explore Merge Sort 5
23.1.87 Recursive Calls 5