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Author:
李春培
GeoGebra
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畫出對稱圖形
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
異分母分數減法
第八周作业
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Equal chords and their distances from the centre
分數乘法的副本
圓錐切球
vertex of quadratic function
謝爾冰司機-正方形
Discover Topics
Triangles
Square
Poisson Distribution
Random Variables
Planes