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五年级-数学（北京版）-分数的基本性质（一）

视频地址：https://video.cache.bdschool.cn/vd/403df4ccb9dfbce482fa2d1abac29875.mp4
附件：0604五年级数学（北京版）-分数的基本性质（一）-1教案.docx
附件：0604五年级数学（北京版）-分数的基本性质（一）-2PPT课件.pdf
附件：0604五年级数学（北京版）-分数的基本性质（一）-3学习任务单.docx

20 views Jul 15, 2021

五年级-数学（北京版）-分数加、减法（一）五年级-数学（人教版）-找次品（一）

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