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折扣 例1
Author:
GeoGebra Institute of Hong Kong
GeoGebra
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平行線的判定
撒针估算面积实验
比較五件物件的重量
科氏力 (Coriolis Force)
异形操场
Discover Resources
中線
Fraction Division (Partitive)
行程圖 (Travel Graph)
三角形的概念
勾股定理III 基於歐基里德(Euclid)的證明
Discover Topics
Exponential Functions
Cuboid
Pyramid
Diagrams
Confidence Interval