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猜猜平均數（限時版）
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
三位數除以一位數（一）
GeoGebra笔记功能体验课件
柱體建築師
球体的体积推导
【案例】2013年安徽高考15题
Discover Resources
可變大的圓桌
Proof of Pythagorean Theorem with Shearing
圓周
勝者即正義，可愛即正義~
Copy of 角平分線分點比例
Discover Topics
Coordinates
Parametric Curves
Statistical Characteristics
Means
Pythagoras or Pythagorean Theorem