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Author:
林峰
GeoGebra
New Resources
三位數除以一位數（二）
異分母分數減法
球体的体积推导（优化版）
錐體建築師
球體建築師
Discover Resources
Pyramid and Cone 2
齿轮咬合
四邊形外接正方形
tttttrr
Copie de 河內塔 (Tower of Hanoi)
Discover Topics
Equations
Correlation
Variance
Optimization Problems
Fractions