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连续开方（制作：谢建华，修订：孟宝兴）
Author:
孟宝兴
GeoGebra
New Resources
三位數除以一位數（二）
画直线等分三角形的面积
四邊形的特性
兩位數加法
GeoGebra笔记功能体验课件
Discover Resources
test021
任意四邊形１比３
兩種畢氏定理的證明
test1
圓外切四邊形
Discover Topics
Difference and Slope
Piecewise Functions
Differential Equation
Upper and Lower Sum or Riemann Sum
Ratios