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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
GeoGebra笔记功能体验课件
拼砌四邊形
三位數除以一位數（一）
直角坐標平面上的旋轉變換
兩位數加法
Discover Resources
乘法表的自动练习
assigment7
circle
Angles in a Circle:Property 3
Copy of 二次函數圖形
Discover Topics
Ellipse
Differential Calculus
Addition
Numbers
Exponent