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Travelling Waves
Author:
ken@ylshsap
travelling wave
GeoGebra
New Resources
三位數除以一位數(一)
畫出對稱圖形
錐體建築師
拼砌四邊形
找出對稱軸
Discover Resources
高美濕地風車2
Symmetric 設計對稱圖案(一條對稱軸)(垂直)
Polygon Activity
triangle
有向數的加法
Discover Topics
Multiplication
Division
Constructions
General Quadrilateral
Histogram