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黎曼和
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sheri.chen
GeoGebra
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兩位數除以一位數（二）
【案例】2013年安徽高考15题
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
畫出對稱圖形
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指數的對稱性
園內接三角形
Similar triangles
齿轮咬合
探究棱錐的體積
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Rational Numbers
Parabola
Terms
Matrices
Equilateral Triangles