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認識正方形
Author:
fifi6713
Topic:
Square
認識正方形
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
畫出對稱圖形
四邉形 (四年級) 教師版
球体的体积推导（优化版）
Discover Resources
偏導數
銀杏葉
reflectional symmetry_6
從平均數找數列中的其中一項數據(活動)
圆锥曲线的产生
Discover Topics
Probability
Polygons
Logarithmic Functions
Integers
Rectangle