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Ponzo 錯覺 (車子)
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学用数学
GeoGebra
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斐波那契螺旋弧线(表格法-可动态调节)
异形操场
平行線的判定
正方形雪花图案
第八周作业1
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Reflectional Symmetry 反射對稱
過圓內c點的弦中點軌跡
弧度制的意义
習題0330-2017
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Discover Topics
Area
Matrices
Polygons
Rotation
Complex Numbers