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Angle between 2 planes in a cube
Author:
tkyggb
GeoGebra
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第八周作业1
撒针估算面积实验
第八周作业3
比較五件物件的重量
第八周作业2
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複息的威力
小精靈
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My First Geogebra Book
凸透镜原理模拟
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Kite
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