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手结构模型

适用年级 3-6 年级

key word:Digital inquiry experiment system

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原理 

人的手有五只手指,包括有三节的食指、中指、无名指、小指,以及只有两节的拇指。手骨共有23块,包括腕骨、掌骨和指骨三部分。

 

目的 

观察和动手操作,了解手的结构。

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