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六年级-数学（人教版）-比例的意义和基本性质（二）

视频地址：https://video.cache.bdschool.cn/vd/75cbd89b1a94c749d5a0dbc05685a797.mp4
附件：0521六年级数学（人教版）-比例的意义和基本性质（二）-1教案.docx
附件：0521六年级数学（人教版）-比例的意义和基本性质（二）-2PPT课件.pdf
附件：0521六年级数学（人教版）-比例的意义和基本性质（二）-3学习任务单.docx

18 views Jul 15, 2021

六年级-数学（北京版）-绘制我家的平面图（一）六年级-数学（北京版）-反比例的意义

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