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纸盒制作
Author:
吕玉雷
GeoGebra
New Resources
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）
科氏力 (Coriolis Force)
比較五件物件的重量
Discover Resources
定積分
圓錐截痕
擴分、約分及比較大小
quiz 9.1 2(a)
test
Discover Topics
Congruence
Right Triangles
Cosine
Rotation
Functions