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試算表應用
Author:
rachmaninoff
GeoGebra
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異分母分數減法
兩位數加法
【案例】2013年安徽高考15题
兩位數除以一位數（一）
兩位數除以一位數（二）
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相似三角形
Homework4
dandan
三角函數由來= =
線性規劃
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Arithmetic
Arithmetic Mean
Equilateral Triangles
Standard Deviation
Dilation