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Author:
俞光隆
GeoGebra
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画直线等分三角形的面积
探究三角形的全等條件
漂亮的摇摆曲线
平行線的斜率
兩位數加法
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折扣 例1
路徑三動畫
排水法求物件體積
Ghost鬼腳圖遊戲12-13
马鞍面旋转
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Percentages
Dilation
Cuboid
Angles
Solids or 3D Shapes