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等差數列2
Author:
李春培
等差數列2
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等的四邊形
三位數除以一位數（二）
兩位數加法
找出對稱軸
Discover Resources
分數的圖示
直徑式的原理
常用等价无穷小示意图
多邊形的切割與拼砌的副本
繪畫四邊形
Discover Topics
Functions
Integral Calculus
Parabola
Cuboid
Upper and Lower Sum or Riemann Sum