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密鋪
Author:
chen mingchuan
GeoGebra
New Resources
球體建築師
拼砌四邊形
算柱 (兩位數)
兩位數除以一位數（一）
兩位數加法
Discover Resources
線性組合1：正六邊形
容積盒子
翰林B4習p81_9
割圆术估计圆周率（刘徽）
擲兩個硬幣的機率分布
Discover Topics
Differential Equation
Perimeter
Incircle or Inscribed Circle
Trigonometry
Definite Integral