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内容简介
本书第1章介绍Scratch，以及它能够实现的内容；然后引出第2章Scratch 3.0的界面知识与操作方法，介绍Scratch 3.0的一些基本操作；接着在第3~6章以案例形式介绍了Scratch 3.0在动画制作、游戏设计、数学编程、硬件编程4个方面的实现方法和步骤；第7章介绍Scratch官方社区的相关内容。
本书适合小学到高中阶段初次接触编程的少年儿童学习，既可以作为他们自学编程的入门教材，也可以作为一般培训机构的少儿编程入门教材。读者可以从Scratch图形化编程入手，首先了解计算机编程的一些基本概念，以便后续学习与理解高级编程语言。
作者简介
艾达，毕业于浙江大学，在国内知名互联网公司从事人工智能领域工作多年，对少儿编程有着自己独特的教学方法和框架体系，希望通过本书启蒙对人工智能感兴趣的青少年儿童。
目录
第 1 章 一起进入 Scratch 的世界
1.1 Scratch 是什么2
1.2 Scratch 能做什么3
1.3 Scratch 怎样用 3
1.4 本章小结 7
第 2 章 认识 Scratch 3.0 界面
2.1 固定显示区域：菜单栏、舞台区、角色区 ··································· 11
2.1.1 菜单栏 ·········································································· 11
2.1.2 舞台区 ·········································································· 12
2.1.3 角色区 ·········································································· 15
扩展知识点 平面直角坐标系 ···················································· 19
2.2 切换显示区域：代码区、背景区、造型区、声音区 ······················· 19
2.2.1 代码区 ·········································································· 20
2.2.2 背景区 ·········································································· 25
扩展知识点 矢量图和位图 ······················································· 29
2.2.3 造型区 ·········································································· 30
2.2.4 声音区 ·········································································· 33
2.3 本章小结 ············································································ 37
第 3 章 Scratch 3.0 动画制作
3.1 什么是动画··········································································· 40
3.2 动画制作的基本步骤······························································· 40
扩展知识点 程序流程图 ······················································· 41
3.3 案例 1 ：小猪佩奇的故事 ····················································· 43
课前小练习： 旋转的小星星···················································· 43
3.4 案例 2 ：超级火柴人 ··························································· 50
课前小练习： 绘制一个角色多个造型········································ 50
课后思考题： 超级火柴人编程新思路········································ 58
3.5 案例 3 ：烟花雨 ································································· 59
课前小练习： 克隆小苹果······················································· 59
3.6 本章小结 ············································································ 65
第 4 章 Scratch 3.0 游戏设计
4.1 游戏设计的基本步骤······························································· 68
4.2 案例 1 ：猫抓老鼠游戏 ························································ 68
4.3 案例 2 ：托板球游戏 ··························································· 75
课后思考题： 托板球游戏难度升级 ········································· 82
4.4 案例 3 ：空战 ···································································· 82
课后思考题： 空战游戏难度升级 ············································ 94
4.5 本章小结 ············································································ 95
第 5 章 Scratch 3.0 数学编程
5.1 数学编程基本步骤 ································································· 98
5.2 案例 1 ：几何图形面积计算 ·················································· 99
扩展知识点 计算机变量 ····················································· 103
课后思考题： 扩展其他几何图形计算 ···································· 111
5.3 案例 2 ：求解方程····························································· 113
课后思考题： 求解二元一次方程组 ······································· 119
5.4 案例 3 ：制作计算器 ··························································120
扩展知识点 自制积木代码 ···················································123
课后思考题： 更改计算器的显示方式 ···································· 131
5.5 本章小结 ·········································································· 131
第 6 章 Scratch 3.0 硬件编程
6.1 什么是硬件编程··································································· 134
6.2 Scratch 3.0 配套硬件介绍···················································· 134
6.2.1 乐高 EV3 套件 ····························································· 134
6.2.2 WeDo 2.0 套件 ····························································135
6.3 本章小结 ···········································································135
第 7 章 Scratch 在线学习网站
7.1 Scratch 官方社区 ······························································· 138
7.2 其他编程学习网站································································ 139
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