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Introduction to Trigonometry from a Unit Circle
Author:
Lam Yat Chun
GeoGebra
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異分母分數減法
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
兩位數除以一位數（二）
四邉形 (四年級) 教師版
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圓錐曲線軌跡 (1)
減法
複合圖形(三)
作業
点、线、角
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Special Points
Division
Geometric Distribution
Conditional Probability
Curve Sketching