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myao1999
GeoGebra
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柱體建築師
三位數除以一位數（一）
異分母分數減法
兩位數除以一位數（一）
第八周作业
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曲柄搖桿
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ptccs2new4
环形跑道问题案例的制作
二项分布
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Polynomial Functions
Perimeter
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Probability
Sine