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test P1的副本
Author:
xiaodandan
,
user3866
GeoGebra
New Resources
找出對稱軸
四邉形 (四年級) 教師版
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
Discover Resources
Fill the circle
數的組合(探究)
九九乘法表
example1_moon
旋转直角
Discover Topics
Similar Triangles
Vectors 3D (Three-Dimensional)
Statistics
Set Theory
Rational Numbers