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Author:
陳允杰
GeoGebra
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【案例】2013年安徽高考15题
画直线等分三角形的面积
錐體建築師
直角坐標平面上的旋轉變換
找出對稱軸
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多項式
No. 7 of Exercise 12C
加減併式與估算
分數認識
三節棍
sin的平移與伸縮
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Trigonometry
Geometry
Upper and Lower Sum or Riemann Sum
Triangles
Integers