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教学素材：正切函数及其反函数
Author:
清风拂琴，陌上花开
GeoGebra
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【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
四邉形 (四年級) 教師版
判斷球體
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tool
HOMEWORK
正立方體與平面的截面
hihihiADFASDF
旋轉的副本
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Distributions
Straight Lines
Ratios
Similar Triangles
Median Value