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同分母分數加法
Author:
GaryLee
GeoGebra
New Resources
盈利與虧蝕
百分數及其應用
斐波那契螺旋弧线（表格法-可动态调节）
折扣
平行線的判定
Discover Resources
task1
Circle Properties
正四面體
linkage
分數小數
Discover Topics
Area
LCM and GCD
Conic Sections
Mathematics
Geometric Transformations