INDEX

A

AccelerometerSensor component, 166

ActivityStarter component, 168

adding a screen, 65

AI2 Companion, xxii, 17

algorithms, 2

AlignHorizontal, 41

AlignVertical, 64

animations, 37

AnswerBox blocks, 66, 71

Any component blocks, 108

App Inventor

MIT AI2 Companion app, xxii

overview, xvi

AppName, 20

arguments, 34, 47, 126

arithmetic operators, 39

arrays, 83

B

background images, 41

backpack, 130

backToTop procedure, 127–129

Ball component, 165

BarcodeScanner component, 166

“Beat the Bus” app

decomposing, 84–85

for each item loop, 103

laying out, 85–87

list variables, 88–89

LocationSensor component, 86

Map component, 85–86

overview, 84

programming, 87–99

Texting component, 86

Blocks Editor

“Beat the Bus” app, 87–99

Blocks pane, 3–4

Colors blocks, ...

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