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Weighted Mean 加權平均數
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
算柱 (兩位數)
画直线等分三角形的面积
第八周作业
三位數除以一位數（二）
兩位數加法
Discover Resources
整數指數與有理指數練習
Angle Sum of Triangle
ghseh 二次函數描點法
方程式(?)
橢圓代數性質,光學性質,生活應用
Discover Topics
Division
General Quadrilateral
Expected Value
Histogram
Statistical Characteristics