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Author:
Sylvie
GeoGebra
New Resources
球體建築師
異分母分數減法
三位數除以一位數（二）
兩位數加法
畫出對稱圖形
Discover Resources
Properties of Inequalities 不等式的加法與乘法性質
昨天各種筆的銷售情況
Properties of a Square
平均線
If指令的應用1
Discover Topics
Curve Sketching
Special Points
Hypothesis Testing
Arithmetic Mean
Congruence