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滑桿動畫
Author:
葉冠和
GeoGebra
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四邊形的特性
畫出對稱圖形
異分母分數減法
判斷球體
三位數除以一位數（二）
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方格紙上畫平行四邊形3
a為底之指數函數圖形
海龍公式與內切圓半徑
畢氏定理完成20170330final
勾股定理III 基於歐基里德(Euclid)的證明
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Stochastic Process or Random Process
Geometric Mean
Linear Equations
Median Value
Scalene Triangles