
手结构模型
适用年级 3-6 年级
key word:Digital inquiry experiment system
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Product Description
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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