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大变彩虹
Author:
nps
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
算柱 (兩位數)
画直线等分三角形的面积
畫出對稱圖形
Discover Resources
線性變換矩陣（二階）
Chapter 1
GGBstar
和两个圆都相切的圆
连续半圆上的动点运动规律
Discover Topics
Integral Calculus
Line Segment
Limits
LCM and GCD
Upper and Lower Sum or Riemann Sum