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黃斌
GeoGebra
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GeoGebra数学资源(4-8年级)
常见四边形是否是双心四边形
双心四边形
异形操场
平行線的判定
Discover Resources
分形几何欣赏初步:树型图
偏導數
橢圓螺旋
Copy of 劉徽的「割圓術」
中职数学
Discover Topics
Prism
Polynomial Functions
Angles
Arithmetic
Distributions