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特製的門
Author:
李春培
特製的門
https://www.facebook.com/video.php?v=730160733696759&fref=nf
GeoGebra
New Resources
畫出對稱圖形
四邊形的特性
兩位數除以一位數（二）
球體建築師
兩位數加法
Discover Resources
Measuring Volume 1
函數
Copy of 七巧板綜合
相位对正弦函数的影响的副本
直角三角形的內心與相似
Discover Topics
Trapezoid
Vectors 3D (Three-Dimensional)
Parabola
Set Theory
Vectors