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相反數
Author:
pingfeng.wu
Topic:
Fractions
國中數學7上:相反數
GeoGebra
New Resources
科赫雪花
正方形雪花图案
斐波那契螺旋弧线(表格法-可动态调节)
异形操场
第三周作业效果演示
Discover Resources
數學作業
橢圓折痕
三角五形
双曲线的定义.许兴华数学
operations of matrix 2rd ver
Discover Topics
Symmetry
Triangles
Complex Numbers
Limits
Centroid or Barycenter