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Locus 軌跡(5T)
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
球體建築師
拼砌四邊形
異分母分數減法
四邉形 (四年級) 教師版
画直线等分三角形的面积
Discover Resources
七巧板（tangram）
gmj106a13 八角錐
二次函數描點
Copy of 方格紙上畫四邊形
科氏力 (Coriolis Force)
Discover Topics
Matrices
Symmetry
Probability
Cylinder
Tree Diagrams