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符成岗
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符成岗
GeoGebra
New Resources
三位數除以一位數（一）
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
錐體建築師
柱體建築師
Discover Resources
正四面体分形
Testing 20170308
均分
對稱之美
f(x)=sinx的圖形--伸縮與平移
Discover Topics
Tree Diagrams
Arithmetic
Difference and Slope
Rhombus
Tangent Function