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GeoGebra
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第八周作业3
比較五件物件的重量
湖南省中职数学教师省培(GeoGebra培训案例)
正方形雪花图案
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四下_面積(一)(教師版)
奠基活動20141008
Heidi Lin - Conic Section
p04 equidistant from two points
平移法(一)
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Cuboid
Square
Linear Equations
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