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Author:
周錦鋒
GeoGebra
New Resources
比較五件物件的重量
百分數及其應用
撒针估算面积实验
斐波那契螺旋弧线（表格法）
科赫雪花
Discover Resources
Tracing the Cosine Graph
幾何_圓2
三角函數關係
三角形的构成的副本
我的第一个GGB绘本
Discover Topics
Vectors 2D (Two-Dimensional)
Equilateral Triangles
Pythagoras or Pythagorean Theorem
Complex Numbers
Straight Lines