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正方變十字
Author:
李春培
正方變十字
GeoGebra
New Resources
錐體建築師
異分母分數減法
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
拼砌四邊形
Discover Resources
數位學習社12/15
優良作品4(薇如)
Rotation in the Coordinate Plane
六邊形
滑桿動畫1
Discover Topics
Natural Numbers
Tangent Function
Random Variables
Vectors
Logarithmic Functions