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2019-11-5 6和7的分解与组合4

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gaoyixuan
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Published on 05 Nov 2019 / In Education environment

2019-11-5 6和7的分解与组合4

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徐老师
徐老师 6 years ago

多让孩子独立思考问题哦,加强数字2的书写练习

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