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Pentacle
Author:
Jianqiang He
GeoGebra
New Resources
拼砌四邊形
GeoGebra笔记功能体验课件
三位數除以一位數（二）
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
Discover Resources
有趣的反例
平行四邊形切割
盾牌~~~~
量詞
线性规划
Discover Topics
Binomial Distribution
Addition
Correlation
Differential Equation
Standard Deviation