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Operations on Complex Numbers 複數的運算
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
三位數除以一位數（二）
拼砌四邊形
四邉形 (四年級) 教師版
畫出對稱圖形
判斷球體
Discover Resources
可互相控制的動點與滑桿
Copy of 閱讀鐘面及數字鐘（時和分）
Copy of 劉徽的「割圓術」
Question 1
七巧板
Discover Topics
Kite
Differential Equation
Set Theory
Rational Numbers
Rotation