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Expansion & Factorization 展開與因式分解
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
異分母分數減法
球體建築師
判斷球體
畫出對稱圖形
拼砌四邊形
Discover Resources
包含除法（整數或分數 ÷ 分數）
test04繪本用
量角器
duality of regular polyhedron
黃金矩形
Discover Topics
Standard Deviation
Ratios
Mode
Unit Circle
Rhombus