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拼貼3
Author:
李伶芳
GeoGebra
New Resources
畫出對稱圖形
球體建築師
球体的体积推导（优化版）
異分母分數減法
【案例】2013年安徽高考15题
Discover Resources
動態畢氏定理
數線上的有理數
Direct Variation (Different powers of x)
香港的硬幣
第一組
Discover Topics
Trigonometric Functions
Constructions
Surface
Square
Pie Chart or Circle Chart