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封閉區域著色
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩位數除以一位數（一）
畫出對稱圖形
三位數除以一位數（一）
異分母分數減法
判斷球體
Discover Resources
擲兩個硬幣的機率分布
周界
Ice Mountain
拋物線4--平行四邊形法
抛物线顶点形成椭圆动画
Discover Topics
Percentages
Optimization Problems
Probability
Straight Lines
Median Value