Scratch programming for teens

Author:Jerry Lee Ford

Summary:This tool is intended to make programming easier to learn for novice programmers and can be used to create computer games, interactive stories, graphic artwork, computer animation and other multimedia projects

Edition:View all formats and editions

Physical Description:xix, 315 pages : illustrations ; 24 cm + 1 CD-ROM (4 3/4 in.)

ISBN:

9781598635362, 1598635360

OCLC Number / Unique Identifier:192082761

Subjects:

Computer games Programming

Computer programming

Jeux d'ordinateur Programmation

Programmation (Informatique)

Programmierung

Scratch (Computer program language)

Scratch (Langage de programmation)

Video games Programming

computer programming

Contents:

Introduction

xiv

PART I SCRATCH BASICS

(94)

Introducing Scratch

(24)

Getting to Know Scratch

(4)

Imagine---Program---Share!

(1)

Scratch Uncovered

(1)

Scratch's Building Block Approach to Programming

(2)

Installing scratch

(6)

Installing Java on Windows

(1)

Installing Scratch on Windows

(2)

Installing Scratch on Mac OS X

(2)

Creating Your First Scratch Application

(5)

Creating a New Scratch Project

(1)

Changing Sprite Attributes

(1)

Adding Code Blocks

(2)

Saving Your Work

(1)

Joining Scratch's Global Community

(7)

Sharing Your Application Projects

(2)

Registering with the Scratch Website

(1)

Keeping In Touch

(2)

Summary

(1)

Getting Comfortable with the Scratch Development Environment

(26)

Getting Comfortable with the Scratch IDE

(18)

Getting Familiar with Menu Bar Commands

(2)

Running Scratch Applications on the Stage

(2)

Running Applications in Presentation Mode

(1)

Controlling Application Execution

(1)

Working with the Sprite List

(1)

Generating New Sprites

(1)

Tracking Mouse Pointer Location

(1)

Working with the Scratch Toolbar

(1)

Switching Between Code Block Groups

(1)

Getting Comfortable with the Scripts Area

(6)

Keeping Project Notes

(2)

Creating New Sprites Using Scratch's Paint Editor

(5)

Examining the Drawing Canvas

(1)

Working with the Toolbar and Options Area

(2)

Working with Button Controls

(1)

Specifying Color Settings

(1)

Configuring a Sprite's Rotation Center

(1)

Summary

(2)

A Review of the Basic Components of Scratch Projects

(20)

Working with Blocks and Stacks

(2)

Three Basic Types of Scratch Blocks

(3)

Working with Stack Blocks

(2)

Working with Hat Blocks

(1)

Working with Reporter Blocks

(1)

Keeping an Eye Out with Monitors

(2)

Eight Categories of Scratch Blocks

(10)

Moving Objects Around the Drawing Canvas

(1)

Changing Object Appearance

(1)

Making Some Noise

(1)

Drawing Lines and Shapes

(1)

Looping, Conditional Logic, and Event Programming

(1)

Sensing Sprite Location and Environmental Input

(2)

Working with Numbers

(1)

Storing and Retrieving Data

(3)

Getting Help with Code Blocks

(1)

Summary

(2)

Mr. Wiggly's Dance---A Quick Scratch Project

(22)

Programming with Scratch

(2)

Creating the Mr. Wiggly's Dance Application

(16)

Step 1: Creating a New Scratch Project

(1)

Step 2: Adding a Background to the Stage

(3)

Step 3: Adding and Removing Sprites

(2)

Step 4: Adding Mr. Wiggly's Music

(3)

Step 5: Playing the Dance Music

(2)

Step 6: Making Mr. Wiggly Dance

(3)

Step 7: Saving and Executing Your New Scratch Application

(1)

Distributing Scratch Projects

(3)

Distributing Scratch Applications to Windows Computers

(1)

Distributing Scratch Applications to Mac OS X Computers

(1)

Instructions for Executing Your Application from a CD-ROM

(1)

Summary

(1)

PART II LEARNING HOW TO WRITE SCRATCH PROGRAMS

(154)

Moving Things Around

(22)

Working with Motion Code Blocks

(1)

Moving and Rotating Sprites

(3)

Setting Sprite Direction

101

(2)

Repositioning a Sprite

103

(2)

Changing Sprite Coordinates

105

(1)

Bouncing Sprites Around the Stage

105

(1)

Keeping Track of Sprite Coordinates and Direction

106

(1)

Taking Advantage of Scratch Cards

107

(3)

Creating the Virtual Scratch Fish Tank

110

(7)

Step 1: Creating a New Scratch Project

111

(1)

Step 2: Adding a Background to the Stage

111

(1)

Step 3: Adding and Removing Sprites

111

(1)

Step 4: Adding a Suitable Audio File to the Stage

112

(1)

Step 5: Playing the Audio File

113

(1)

Step 6: Animating the Swimming of the Fish

113

(3)

Step 7: Saving and Executing Your New Scratch Application

116

(1)

Summary

117

(2)

Sensing Sprite Position and Controlling Environmental Settings

119

(20)

Working with Sensing Code Blocks

120

(1)

Retrieving Mouse Button and Coordinate Status

121

(2)

Determining when Keys Are Pressed

123

(1)

Determining when Sprites Collide with Other Objects

124

(3)

Determining Distance

127

(1)

Working with a Timer

128

(1)

Retrieving Stage and Sprite Data

129

(1)

Retrieving Audio Data

130

(1)

Code Blocks That Work with Sensor Boards

131

(1)

Creating the Family Scrapbook Application

132

(5)

Step 1: Creating a New Scratch Project

132

(1)

Step 2: Adding and Removing Sprites and Costumes

133

(1)

Step 3: Adding a Suitable Audio File to the Stage

134

(1)

Step 4: Playing the Audio File

135

(1)

Step 5: Displaying the Photographs

135

(1)

Step 6: Saving and Executing Your New Scratch Application

136

(1)

Summary

137

(2)

Storing and Retrieving Data

139

(20)

Learning How to Work with Application Data

139

(2)

Storing Data in Variables

141

(4)

Creating Scratch Variables

141

(1)

Assigning Variables to Sprites and the Stage

142

(1)

Assigning Names to Your Variables

143

(1)

Understanding Variable Scope

143

(2)

Deleting Variables when They Are No Longer Needed

145

(1)

Accessing Variables Belonging to Other Sprites

145

(2)

Working with Variable Monitors

147

(1)

Two Quick Examples

147

(1)

Developing the Basketball Quiz Project

148

(10)

Step 1: Creating a New Scratch Project

150

(1)

Step 2: Selecting an Appropriate Stage Background

150

(1)

Step 3: Adding and Removing Sprites

150

(1)

Step 4: Adding Variables Required by the Application

151

(2)

Step 5: Adding Scripts to Button Sprites to Collect User Input

153

(1)

Step 6: Automating the Administration of the Quiz

154

(3)

Step 7: Saving and Executing Your New Application

157

(1)

Summary

158

(1)

Doing a Little Math

159

(18)

Addition, Subtraction, Multiplication, and Division

159

(1)

Understanding the Mathematical Order of Precedence

160

(1)

Generating a Random Number

161

(1)

Comparison Operations

162

(4)

Performing Logical Comparisons

166

(1)

Rounding Numbers and Retrieving Remainders

167

(1)

Working with Built-in Mathematical Functions

168

(1)

Developing the Number Guessing Game Quiz Project

169

(7)

Step 1: Creating a New Scratch Project

171

(1)

Step 2: Adding a Stage Background

171

(1)

Step 3: Adding and Removing Sprites

171

(1)

Step 4: Adding Variables Required by the Application

172

(1)

Step 5: Adding an Audio File to the Application

173

(1)

Step 6: Adding Scripts to Capture Player Input

173

(1)

Step 7: Processing Player Guesses

174

(2)

Step 8: Saving and Executing Your New Scratch Application

176

(1)

Summary

176

(1)

Conditional and Repetitive Logic

177

(20)

Introducing Scratch Control Blocks

177

(1)

Event Programming

178

(1)

Pausing Script Execution

179

(1)

Executing Loops

180

(3)

Sending and Receiving Broadcasts

183

(1)

Conditional Programming Logic

184

(3)

Nesting Conditional Control Code Blocks

186

(1)

Preventing Endless Loops

186

(1)

Terminating Script Execution

187

(1)

Developing the Ball Chase Game

188

(7)

Step 1: Creating a New Scratch Project

189

(1)

Step 2: Adding and Removing Sprites

189

(2)

Step 3: Adding Variables Required by the Application

191

(1)

Step 4: Adding an Audio File to the Application

191

(1)

Step 5: Adding a Script to Control Ball Movement

191

(1)

Step 6: Adding Scripts That Display Game Over Messages

192

(1)

Step 7: Adding Scripts Needed to Control and Coordinate Game Play

192

(3)

Step 8: Saving and Executing Your Scratch Project

195

(1)

Summary

195

(2)

Changing the Way Sprites Look and Behave

197

(16)

Changing Sprite Costumes and Backgrounds

198

(3)

Changing Sprite Costumes

198

(2)

Changing a Stage's Background Costumes

200

(1)

Making Sprites Talk and Think

201

(1)

Applying Special Effects to Costumes and Backgrounds

202

(2)

Changing a Sprite's Size

204

(1)

Making Sprites Appear and Disappear

205

(1)

Determining What Happens when Two Sprites Overlap

206

(1)

Developing the Crazy Eight Ball Game

207

(5)

Step 1: Creating a New Scratch Project

209

(1)

Step 2: Adding and Removing Sprites

209

(1)

Step 3: Adding a Variable Required by the Application

210

(1)

Step 4: Adding an Audio file to the Application

210

(1)

Step 5: Creating a Script to Control the Display of the 8 in the Eight Ball

210

(1)

Step 6: Adding the Programming Logic Needed to Control the Eight Ball

211

(1)

Step 7: Saving and Executing Your Scratch Project

212

(1)

Summary

212

(1)

Spicing Things Up with Sounds

213

(18)

Playing Sounds

214

(2)

Play a Drum

216

(1)

Playing Musical Notes

217

(2)

Configuring Audio Volume

219

(1)

Setting and Changing Tempo

220

(1)

Creating the Family Picture Movie

221

(9)

Step 1: Creating a New Scratch Project

222

(1)

Step 2: Adding and Removing Sprites and Backgrounds

223

(2)

Step 3: Adding a Variable Required by the Application

225

(1)

Step 4: Adding an Audio File to the Application

225

(1)

Step 5: Developing the Application's Programming Logic

226

(4)

Step 6: Saving and Executing Your Scratch Project

230

(1)

Summary

230

(1)

Drawing Lines and Shapes

231

(18)

Clearing the Stage Area

231

(1)

Drawing with the Pen

232

(2)

Setting Pen Color

234

(2)

Changing Pen Shade

236

(2)

Working with Different Size Pens

238

(1)

Stamping an Instance of a Costume on the Stage

239

(1)

Creating the Doodle Drawing Application

240

(7)

Step 1: Creating a New Scratch Project

241

(1)

Step 2: Adding and Removing Sprites

242

(2)

Step 3: Creating Scripts Used to Control the Doodle Drawing Application

244

(3)

Step 4: Saving and Executing Your Scratch Project

247

(1)

Summary

247

(2)

PART II ADVANCED TOPICS

249

(44)

Sharing Your Scratch Projects over the Internet

251

(16)

Running Scratch Applications on the Internet

251

(1)

Registering with the Scratch Website

252

(2)

Uploading Your Scratch Applications

254

(3)

Viewing and Organizing Your Applications Online

257

(8)

Running Your Application

257

(1)

Adding Comments

257

(2)

Adding Tags

259

(1)

Creating Galleries

260

(4)

Removing Projects

264

(1)

Updating Your Projects

264

(1)

Other Scratch Website Features

264

(1)

Downloading Other People's Projects

265

(1)

Summary

266

(1)

Collecting External Input Using a Scratch Board

267

(10)

Interacting with the Real World

268

(1)

Buying a Scratch Board

269

(1)

Installing Your Scratch Board

269

(1)

Using the Sensor Block to Interact with Your Scratch Board

270

(6)

Collecting Input Using the Slider Control

270

(2)

Using the Button Control to Initiate Action

272

(1)

Reacting to Light

272

(1)

Responding to Sound

273

(1)

Measuring Electrical Resistance

274

(1)

Keeping a Watchful Eye on Sensor Data

275

(1)

Summary

276

(1)

Finding and Fixing Program Errors

277

(16)

Dealing with Application Errors

277

(4)

Understanding Syntax Errors

279

(1)

Keeping an Eye Out for Logical Errors

279

(1)

Tracking Down Run-Time Errors

280

(1)

Debugging Your Scratch Applications

281

(6)

Basic Debugging Techniques

281

(3)

Running Your Application in Single Stepping Mode

284

(3)

Watch Out when Removing Sounds and Sprites

287

(1)

Getting Help

288

(4)

Referring to Scratch's Online Help

289

(1)

Getting Help for Individual Code Blocks

289

(2)

Getting Help from Other Scratch Programmers

291

(1)

Summary

292

(1)

PART IV APPENDICES

293

(10)

Appendix A What's on the Companion CD?

295

(2)

Appendix B What Next?

297

(6)

Glossary

303

(4)

Index

307

Notes:

Accompanying CD-ROM contains Scratch installation files and source code for projects described in book

Includes index