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Clock
Author:
Tsang Kin Fun Francis
You can move the hands freely on the clock ...
GeoGebra
New Resources
判斷球體
錐體建築師
兩組對邊相等的四邊形
三位數除以一位數（一）
畫出對稱圖形
Discover Resources
Addition of 2 Directed Numbers
ghseh 二次函數描點法上下平移-1
圓周公式應用題2的副本
钟表制作成功啦
圆与直线的位置关系
Discover Topics
Constructions
Addition
Variance
Mode
Pythagoras or Pythagorean Theorem