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Author:
洪馷孺
GeoGebra
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三位數除以一位數(一)
異分母分數減法
畫出對稱圖形
拼砌四邊形
四邉形 (四年級) 教師版
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Quiz on Equation of Straight Lines 直線的方程:測驗
Angle Sum in a Triangle
二元线性规划的图解法(18.2 例4)
立體圖形的截面
金惠吉:三维李萨如
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Prism
Circle
Trapezoid
Plane Figures or Shapes
Matrices