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若隐若现的白点
Author:
宋晓燕
GeoGebra
New Resources
異分母分數減法
找出對稱軸
三位數除以一位數（一）
錐體建築師
畫出對稱圖形
Discover Resources
waaachen
橢圓軌跡
Investigation on definite integral
分割多边形
探究平行四邊形面積
Discover Topics
Surface
Differential Equation
Centroid or Barycenter
Upper and Lower Sum or Riemann Sum
Statistical Characteristics