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祖冲之的期望：内棋与外棋
Author:
孟宝兴
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
球體建築師
四邉形 (四年級) 教師版
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Helicoid
P.4不規則圖形的周界
PMC 2017-18
假定平均數(教師講解用)
描点法画反比例函数图像
Discover Topics
Differential Equation
Confidence Interval
Tree Diagrams
Means
Hypergeometric Distribution