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用和或差的平方做因式分解
Author:
鍾文欽
GeoGebra
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兩位數加法
找出對稱軸
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
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三棱锥的体积推导
Geometry Exercises
垂心與垂線
梯形面積(求上底)
新手任务绘本
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Mode
Congruence
Exponential Functions
Linear Equations
Frequency Distribution