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兩圓的公切線
Author:
鍾元杰
兩圓的公切線
GeoGebra
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兩位數除以一位數（二）
兩位數加法
畫出對稱圖形
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
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Function3
Tessellations
直線排列 3
分數認識
林辰洋 凹面鏡反射
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Quadratic Functions
Difference and Slope
Logic
Square
Random Experiments