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Author:
Lin Ching Chieh
GeoGebra
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兩位數除以一位數(二)
畫出對稱圖形
兩組對邊相等的四邊形
異分母分數減法
兩組對邊相等和有直角的四邊形
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廣義量角器
Quiz on Mixed Arithmetic Operations of Positive Integers 正整數四則混合運算:測驗
黃金矩形
小船平移2
排水法求物件體積
Discover Topics
Straight Lines
Equilateral Triangles
Optimization Problems
Sequences and Series
Conic Sections