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Author:
chen mingchuan
GeoGebra
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兩位數加法
異分母分數減法
三位數除以一位數(二)
錐體建築師
【案例】2013年安徽高考15题
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CAS View
雪花(碎形)
總結
堆一堆222
Angle (Extended 2)
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Percentages
Triangles
Integers
Square
Cuboid