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Author:
李伶芳
GeoGebra
New Resources
四邉形 (四年級) 教師版
找出對稱軸
錐體建築師
異分母分數減法
兩位數除以一位數（二）
Discover Resources
rotational symmetry_4
Copy of 固定周界的長方形的面積變化
正弦公式2
假的龍珠
畫三角形 題1a 的複本
Discover Topics
Parabola
Geometric Mean
Cuboid
Perimeter
Differential Equation