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六年级-数学（北京版）-比例的意义

视频地址：https://video.cache.bdschool.cn/vd/9d9d4f65e4c9b982e3f5d1cbfe90202f.mp4
附件：0515六年级数学（北京版）-比例的意义和性质（一）-1教案.docx
附件：0515六年级数学（北京版）-比例的意义和性质（一）-2PPT课件.pdf
附件：0515六年级数学（北京版）-比例的意义和性质（一）-3学习任务单.docx

17 views Jul 15, 2021

六年级-数学（人教版）-反比例的意义六年级-数学（北京版）-解决问题（二）

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