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Quiz on Interest 利息：測驗
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
直角坐標平面上的旋轉變換
三位數除以一位數（二）
判斷球體
第八周作业
四邉形 (四年級) 教師版
Discover Resources
包含除法（整數÷整數）
Tractrix surface
反演(Inversion)
thm 11,12
Curtate Cycloid
Discover Topics
Tangent Function
Subtraction
Hypergeometric Distribution
Rotation
Tangent Line or Tangent