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七巧板.ggb
Author:
郭勇
GeoGebra
New Resources
兩位數加法
直角坐標平面上的旋轉變換
兩位數除以一位數（一）
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
Discover Resources
畫三角形 題3c
ghseh 二次函數的開口方向
Perimeter
Rotational and reflectional symmetry of a regular polygon
迭帶
Discover Topics
Tree Diagrams
Differential Calculus
Normal Distribution
Addition
Expected Value