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畢氏定理實作
Author:
張道民
GeoGebra
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異分母分數減法
判斷球體
GeoGebra笔记功能体验课件
拼砌四邊形
三位數除以一位數（二）
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體積公式參考
數播線上201802
教學媒體
动点
圓周_心算題03
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Angles
Median Value
Translation
Arithmetic Mean
Pyramid