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银币
Author:
luodeqin@keleshuxue.com
GeoGebra
New Resources
兩組對邊相等的四邊形
畫出對稱圖形
柱體建築師
算柱 (兩位數)
第八周作业
Discover Resources
地球20160328
不規則圖形的周界(intro)
qr code for symmetry
Copy of 分數與小數
學習活動七頂點法
Discover Topics
Centroid or Barycenter
Tangent Function
Scatter Plot
Linear Functions
Algebra