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灑水器
Author:
pingfeng.wu
GeoGebra
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異分母分數減法
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
【案例】2013年安徽高考15题
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一元二次方程式
【範本】資料整理與統計圖表─統計量值
sinα + sinβ > 0 ?
simulation of the uniform variable linear motion
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Continuity
Symmetry
Exponent
Statistical Characteristics
Set Theory