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gjh-g04-01 差的平方公式
Author:
均一
GeoGebra
New Resources
找出對稱軸
兩位數加法
三位數除以一位數（一）
球體建築師
算柱 (兩位數)
Discover Resources
Polygon Activity
Surface area of sphere
平移法（二）
盾牌~~~~
有趣的线
Discover Topics
Subtraction
Distributions
Special Points
Geometry
General Quadrilateral