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开关灯小游戏
Author:
孟宝兴
GeoGebra
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兩組對邊相等的四邊形
柱體建築師
拼砌四邊形
畫出對稱圖形
球体的体积推导（优化版）
Discover Resources
正立方體內的正四面體
拼貼3
三圓外切
Copy of 學生自行製作棒形圖
任務4的副本
Discover Topics
Logarithmic Functions
Secant Line or Secant
Reflection
Ratios
Fractal Geometry