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Pythagorean Fractal Tree
Author:
魏向东
GeoGebra
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平行線的判定
折扣
龙形曲线-分形龙
撒针估算面积实验
比較五件物件的重量
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testing
STEM 遇上 GeoGebra 研討會暨工作坊 (小學)
科學記號
Copy of 包含除法（1 ÷分數）
正四面體碎形
Discover Topics
Means
Equilateral Triangles
Vectors 3D (Three-Dimensional)
Surface
Triangles