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video_20191021_202253.mp4

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粟昱博
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Published on 22 Oct 2019 / In Education environment

10的分解与组合

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白老师
白老师 6 years ago

10以内的分解对粟昱博来说就是一碟小菜了,不过他还是能用实物演示,再一次理解了加法和减法的意义了加油!

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