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滾球平台
Author:
施奕瑄
GeoGebra
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算柱 (兩位數)
三位數除以一位數（二）
畫出對稱圖形
四邉形 (四年級) 教師版
柱體建築師
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內切圓滾動
向量相加
各種三角形
点、线、角
球表面积的一种特殊推导
Discover Topics
Special Points
Histogram
Quadrilaterals
Equations
Rational Numbers