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旋轉矩陣
Author:
楊澤璿
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
球体的体积推导
三位數除以一位數（一）
四邉形 (四年級) 教師版
Discover Resources
waaachen
塗色練習
七巧板（tangram）的副本
拋物線1-焦點法
音乐播放器(需下载到本地使用)
Discover Topics
Line Segment
Differential Equation
Dilation
Boxplot
Differential Calculus