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Author:
洪馷孺
GeoGebra
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兩位數加法
畫出對稱圖形
画直线等分三角形的面积
球体的体积推导
四邉形 (四年級) 教師版
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方格紙上畫四邊形
滾動圓周來發現圓周長
大圓在小圓上滾動(利用Affineratio指令)
分1
劉徽的「割圓術」 的複本
Discover Topics
Curve Sketching
Sequences and Series
Geometric Transformations
Translation
Orthocenter