Camille McCue, PhD, is a STEM educator who loves teaching computer science, math, engineering, and physics to learners ranging from kindergarteners to graduate students. She works for organizations including NASA, PBS, independent schools, and Project Lead The Way.

Introduction 2

About This Book 2

What's New in the Second Edition 4

About You 5

About the Icons 6

Project 1: Get Started 7

Coding QuickStart 7

A Hello World! example 8

What's an algorithm? 9

Sequence, selection, and repetition .10

Flowcharting 11

Picking a Language 12

Using a Dashboard (IDE) 13

Setting Up Your Account in Scratch 14

Getting Around in Scratch 15

Using the Code Tab in Scratch 18

Getting Around in MakeCode 20

Using the Code Toolbox in MakeCode 23

Fixing Errors 24

Debugging in Scratch .25

Debugging in MakeCode .27

Getting Help 28

Project 2: Jungle Chat 29

Brainstorm 30

Flowchart 30

Start a New Project 31

Add a Backdrop 32

Add Animal Sprites 33

Add Text-to-Speech Commands 36

Code the Monkey to Run When Clicked 36

Code the Monkey to Ask the User's Name 38

Make and Give the Greeting 39

Code the Monkey to Play a Sound 40

Code the Snake to Play a Sound You Record 41

Code the Toucan to Play a Sound from the

Sound Library 43

Enhance Your Scene 45

Save, Test, and Debug Your Program 46

Share Your Program with the World 46

Big Ideas in the Project 46

Project 3: Freeze the Pops 48

Brainstorm 49

Flowchart 49

Start a New Project 51

Make a Variable 52

Code Button A to Measure and Show

the Temperature 53

Continue Coding Button A to Show If the

Pops Are Frozen 56

Save, Test, and Debug Your Program 59

Transfer Your Program to the micro:bit 60

Put Your micro:bit in the Freezer 60

Enhance Your Gadget 61

Big Ideas in the Project 62

Project 4: Jellyfi sh Jumble 64

Brainstorm 65

Flowcharts 65

Start a New Project 67

Add a Backdrop 67

Add a Jellyfi sh Sprite and Custom Costumes 68

Make a Mr Jelly Sprite and a Fake Sprite 70

Code the Green Flag Blocks 73

Background .73

Mr Jelly .74

Fake and the fakers .75

Code the Faker Clones to Swish 77

Code Mr Jelly to Know He's Been Found 78

Enhance Your Scene 79

Save, Test, and Debug Your Program 81

Share Your Program with the World 81

Big Ideas in the Project 81

Project 5: Card War 83

Brainstorm 84

Flowcharts 84

Start a New Project 85

Make a Variable 87

Code on shake to Make and Send Your Number 88

Code an on radio received Block to Identify a Winner 90

Save, Test, and Debug Your Program 97

Transfer Your Program to the micro:bit 99

Enhance Your Gadget 99

Big Ideas in the Project 100

Project 6: Avoid the Asteroids 102

Brainstorm 103

Flowcharts 103

Green fl ag fl owchart 104

Robot fl owchart 105

Start a New Project 106

Add Three Backdrops 106

Add a Robot Sprite 108

Add an Asteroid Sprite 110

Make Dents and Timer Variables 112

Add Background Music from the Sound Library 113

Code the Green Flag Blocks 114

Background 114

Robot 117

Asteroids 122

Build Your Asteroid Field 125

Code Key Control of the Robot 126

Enhance Your Scene 127

Save, Test, and Debug Your Program 128

Share Your Program with the World 128

Big Ideas in the Project 128

Project 7: Get Fancy 131

Programming Your Own Ideas 132

Getting inspiration from Scratchers 132

Getting inspiration from MakeCode projects 134

Looking at daily human challenges 134

Entering some contests 135

Getting Your Scratch Programs into the World 135

Sharing a project in Scratch 135

Starting your own Scratch studio 136

Making Your Gadgets Real 137

Putting a program on the micro:bit board 137

Adding more hardware 139

Upping Your Game 140

At-home learning 140

Camps and clubs 140

Books 141

Souping Up User Interfaces in Scratch 142

Painting your own images 142

Finding images online 143

Recording your own sounds 144

Finding sounds online 144

Next Steps 145

Coding at school 145

Coding in college 145

Coding as a career 146