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Author:
Lin Ching Chieh
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
拼砌四邊形
找出對稱軸
四邉形 (四年級) 教師版
Discover Resources
GeoGebra Tube
最大斜率的直線
旋转体
拋物線1-焦點法
我的第一个绘本
Discover Topics
Incircle or Inscribed Circle
Addition
Trigonometry
Polygons
General Quadrilateral