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waaachen
Author:
陳兪宏
小手解答版!!!!
GeoGebra
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球体的体积推导（优化版）
拼砌四邊形
畫出對稱圖形
兩位數除以一位數（二）
三位數除以一位數（一）
Discover Resources
函数的奇偶性和周期性
分段2
angle sum of triangle
Doppler Effect and Shockwave
几何概型
Discover Topics
Fractal Geometry
Boxplot
Rational Numbers
Natural Numbers
Quadratic Equations