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兩位數加法
Author:
Anthony OR 柯志明
Topic:
Addition
GeoGebra
New Resources
四邊形的特性
兩組對邊相等的四邊形
三位數除以一位數（二）
錐體建築師
柱體建築師
Discover Resources
直線與平面關係
對稱-釘板-Student
circle
橢圓1-同心圓法
动圆与两(相离)圆外切
Discover Topics
Scalene Triangles
Optimization Problems
Upper and Lower Sum or Riemann Sum
Fractions
Quadrilaterals