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四則混合
Author:
周錦鋒
GeoGebra
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畫出對稱圖形
直角坐標平面上的旋轉變換
兩位數除以一位數（一）
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
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小二三 畫時鐘
Geogebra 教學
elevation
任務4的副本
直角坐標平面上的旋轉變換 (1)
Discover Topics
Piecewise Functions
Straight Lines
Surface
LCM and GCD
Parabola