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六年级-数学（北京版）-比的意义（一）

视频地址：https://video.cache.bdschool.cn/vd/93a5a9bfca4d39af85c3cea674c5fad5.mp4
附件：0512六年级数学（北京版）-比的意义（一）-1教案.docx
附件：0512六年级数学（北京版）-比的意义（一）-2PPT.pdf
附件：0512六年级数学（北京版）-比的意义（一）-3学习任务单.docx

17 views Jul 15, 2021

六年级-数学（人教版）-圆柱的认识六年级-数学（人教版）-综合与实践整理与复习（四）

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