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tool for age question
Author:
emilylwy
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（一）
画直线等分三角形的面积
算柱 (兩位數)
兩位數加法
Discover Resources
數學模型
Copy of 長方形與正方形的面積
門格海綿
向量分解的副本
滚动系列
Discover Topics
Standard Deviation
Equilateral Triangles
Division
Complex Numbers
Upper and Lower Sum or Riemann Sum