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秋千集合: 数学中的集合初识 (Large Print Edition)
Paperback
Series: 儿童数学丛书
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ISBN13: 9781632709059
Publisher: Life Is a Story Problem LLC
Published: Nov 14 2025
Pages: 22
Weight: 0.13
Height: 0.05 Width: 8.50 Depth: 8.50
Language: Chinese
《秋千集合》利用孩子与生俱来的分类本领，引入集合与集合成员的概念。
集合是现代数学的根基。数论、算术、代数、几何、三角、微积分的每条原理，都可以用集合来描述。越早理解集合的原理、语言与记号，越能为孩子快速而扎实地吸收高阶数学做好准备。
集合的一个定义是：能明确判断任意一个对象是否属于其中的一簇对象。 一簇就是任何成群的东西。对象可以是任何事物：一个玩具、一个数字，甚至是另一个集合。成员资格是关键：要组成一个集合，必须能准确分清什么在集合里、什么不在集合里。每个集合都要有清晰的定义。
本书从可纳入集合的对象类型与各集合的定义讲起。一个秋千架是一组挂在同一根横杆上的秋千。'秋千'是指能来回摆动、孩子可以坐上去的东西。本书始终强调这一定义。与孩子讨论本书时，也请强调给出的定义，并判断书外的事物是否符合这些定义。
《秋千集合》教孩子把现实情境转成数学表述，比如f 是 B 的元素，并学习把表示属于集合的数学语句翻译成口头语言。
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