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纏繞畫
Author:
洪源朗
GeoGebra
New Resources
三位數除以一位數（一）
球體建築師
算柱 (兩位數)
兩位數除以一位數（一）
找出對稱軸
Discover Resources
三角函數with sine, cosine圖形
圓的展開partII
Escher 階梯
繡曲線
圖形周界_F
Discover Topics
Root
Pie Chart or Circle Chart
Indefinite Integral
Difference and Slope
Normal Distribution