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平方根
Author:
李春培
平方根
GeoGebra
New Resources
四邉形 (四年級) 教師版
異分母分數減法
拼砌四邊形
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
Discover Resources
尤拉線
用面積逼近圓周率
圓例8
外心
繪畫長方形
Discover Topics
Rational Numbers
Expected Value
Boxplot
Plane Figures or Shapes
Definite Integral