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kevin20020905
GeoGebra
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异形操场
龙形曲线-分形龙2
比較五件物件的重量
龙形曲线-分形龙
Discover Resources
linear function
Angles associated with Parallel Lines 平行線上的角
陳柄何的GGB book
General Form of Quadratic Functions 二次函數的圖像：一般式
分數乘法的副本
二進位翻牌
Discover Topics
Arithmetic
Perimeter
Straight Lines
Centroid or Barycenter
Vectors