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认识面积 PowerPoint PPT Presentation


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义务教育课程标准实验教科书. 数学 三年级(下册). 认识面积. 作者:陈伟星 无锡市特殊教育学校. 它们刷的是 木板的表面. 说一说 比一比. 摸一摸 看一看. 黑板的表面. 课本的封面. 黑板表面 的 大小 是 黑板表面 的 面积 。. 黑板表面的面积. 课本封面 的 大小 是 课本封面 的 面积 。. 课本封面的面积. ( )比( )大。. 说一说 比一比. 摸一摸 看一看. 课桌面. 椅子面. 课桌面 的 大小 是 课桌面 的 面积 。.

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认识面积

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