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Author:
马云辉
GeoGebra
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異分母分數減法
画直线等分三角形的面积
錐體建築師
算柱 (兩位數)
四邊形的特性
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省政信箱
磁磚著色
二次函數圖形(1)
Ex5C#4
積分的副本
Discover Topics
Limits
Linear Equations
Straight Lines
Sequences and Series
Intersection