一年级数学 18以内的加法

2020 8:14
Synopsis
引导学生用10的数目组合,以心算进行加法运算。 * 亲爱的同学们,不好意思。 影片中有个错误,请同学们注意⚠️ ❌ 6 + 5 = 10 ...
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