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一組物件的幾分之幾
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GeoGebra
New Resources
兩位數加法
四邊形的特性
三位數除以一位數（二）
兩組對邊相等的四邊形
算柱 (兩位數)
Discover Resources
數字鐘
test1
立体几何
切割正十二面體
正方体截面
Discover Topics
Frequency Distribution
Random Variables
Angles
Continuity
Linear Equations