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包含除法（1 ÷分數）
Author:
GeoGebra Institute of Hong Kong
Topic:
Fractions
GeoGebra
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異分母分數減法
四邉形 (四年級) 教師版
畫出對稱圖形
兩位數加法
兩組對邊相等的四邊形
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鋸齒狀的函數
Copy of 閱讀鐘面及數字鐘（時和分）
Copy of 球面
線性規劃題目
基础知识
Discover Topics
Symmetry
Equations
Addition
Equilateral Triangles
Parabola