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四年级-数学（人教版）-观察物体（二）第一课时

视频地址：https://video.cache.bdschool.cn/vd/d706d2b9eb73ea8ed2489eff3e5c64cb.mp4
附件：0506四年级数学（人教版）-观察物体（二）第一课时-1教案.doc
附件：0506四年级数学（人教版）-观察物体（二）第一课时-2PPT课件.pdf
附件：0506四年级数学（人教版）-观察物体（二）第一课时-3学习任务单.docx

15 views Jul 15, 2021

四年级-数学（北京版）-小数点位置移动引起小数大小变化的规律（二）四年级-数学（北京版）-小数点位置移动引起小数大小变化的规律（一）

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