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霓虹燈
Author:
chen mingchuan
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（二）
球體建築師
【案例】圆柱体内放置一个大球六个小球
【案例】2013年安徽高考15题
Discover Resources
擲兩個硬幣的機率分布
向量與坐標
同旁內角---垂直平行綫
角度、弧度互換
函數的面積 (黎曼和)的副本
Discover Topics
Difference and Slope
Curve Sketching
Natural Numbers
Sequences and Series
Probability