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九九乘法表的認識
Author:
鍾文欽
GeoGebra
New Resources
算柱 (兩位數)
兩位數除以一位數（一）
柱體建築師
畫出對稱圖形
拼砌四邊形
Discover Resources
rotational symmetry_4
Incentre
(003)80102史巧薇
圆的面积原理
一个函数的零点个数.许兴华数学
Discover Topics
Pie Chart or Circle Chart
Isosceles Triangles
Exponential Functions
Mathematics
Frequency Distribution