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Author:
chan ka fai
Topic:
Translation
GeoGebra
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異分母分數減法
四邊形的特性
四邉形 (四年級) 教師版
錐體建築師
兩組對邊相等的四邊形
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線性規劃
Graph Paper
歐幾米德多面體（四邊形與六邊形）
河北省2016年25题
重要的馬克勞林級數 (Some Important Maclaurin Series)
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Linear Equations
Square
Quadratic Functions
Logic
Histogram