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初一-数学(北京版)平方差公式（第一课时）

视频地址：https://video.cache.bdschool.cn/vd/1bb6a188ab5bd27ac35740cabe51e1ef.mp4
附件：0604初一数学（北京版）-平方差公式（第一课时）-1教案.docx
附件：0604初一数学（北京版）-平方差公式（第一课时）-2PPT.pptx
附件：0604初一数学（北京版）-平方差公式（第一课时）-3学习任务单.docx

18 views Jul 15, 2021

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