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Triangular Number 三角形數
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
GeoGebra笔记功能体验课件
判斷球體
兩位數除以一位數(二)
三位數除以一位數(一)
【案例】2013年安徽高考15题
Discover Resources
一組物件的幾分之幾(練習)
滑桿分段控制的基礎
GeoGebraBook(for20151202)
向量線性組合的範圍
小船平移2
Discover Topics
Parallelogram
Rectangle
Subtraction
Definite Integral
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