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Author:
Leslie Ho
GeoGebra
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比較五件物件的重量
第三周作业效果演示
盈利與虧蝕
折扣
常见四边形是否是双心四边形
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活動所需時間計算機 (24小時報時制)
分水問題
MathMedia150206
正方形所夾三角形面積相等
高考抛物线题的动态演示5.许兴华数学
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Statistics
Power Functions
Means
Matrices
General Quadrilateral