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Author:
junfeilx
GeoGebra
New Resources
兩位數除以一位數（一）
錐體建築師
画直线等分三角形的面积
兩組對邊相等的四邊形
拼砌四邊形
Discover Resources
正方體及正四面體的對稱性質
量角器
[S2] a revised version of Jane’s GeoGebra file (modified by the author)
GGB9
一次函数 二次函数 三角函数
Discover Topics
Definite Integral
Expected Value
Rational Numbers
Centroid or Barycenter
Subtraction