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Author:
Yin Kelvin Wong
GeoGebra
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四邉形 (四年級) 教師版
找出對稱軸
拼砌四邊形
直角坐標平面上的旋轉變換
三位數除以一位數(二)
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鉛筆的長度
P.4不規則圖形的周界
ghseh 二次函數描點法上下平移-6
拋物線--平行四邊形法
了解圓方程(2)的副本
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Rational Numbers
Hypergeometric Distribution
Real Numbers
Set Theory
Arithmetic Mean