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test01繪本用
Author:
趙偉晉
GeoGebra
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球體建築師
兩位數除以一位數（二）
錐體建築師
異分母分數減法
畫出對稱圖形
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齒輪連接的方法與轉動。
Primary Mathematics
tube15240
長方形
勾股定理证明演示--分割股边
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Angles
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Circle
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