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Author:
葉天宏
GeoGebra
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画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
柱體建築師
拼砌四邊形
異分母分數減法
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Quiz on Reflection 反射變換:測驗
Copy of 部分佔全部的百分率: 例1
認識對稱圖形
Tetrahedron 四面體
动态平衡
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Trigonometric Functions
Trigonometry
Polygons
Coordinates
Isosceles Triangles