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Author:
郭淳靖
Topic:
Angles
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兩組對邊相等的四邊形
錐體建築師
畫出對稱圖形
兩位數除以一位數（二）
算柱 (兩位數)
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量角器
If x^2 + x + k > 0 for any real value of x, what is k?
gjc096b28 等腰三角形邊上一點與角度
Copie de Comparing fractions using number lines and rectangles
滑桿動畫1
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Calculus
Histogram
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Polynomial Functions
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