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Author:
Hui Sir
GeoGebra
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四邊形的特性
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數(二)
四邉形 (四年級) 教師版
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动态展示圆面积的构成
紙幣
ghseh 二次函數的開口方向
黃金矩形與複數級數
F4_Ch9.1
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Polynomial Functions
Arithmetic
Surface
Isosceles Triangles
Ratios