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AMC2020J-28 正立方體挖洞
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学用数学
GeoGebra
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第八周作业2
盈利與虧蝕
斐波那契螺旋弧线（表格法-可动态调节）
第三周作业效果演示
撒针估算面积实验
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小四小數
兩面角
勝者即正義，可愛即正義~
PMC 2017-18
活工(一)Q3
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Division
Sequences and Series
Cylinder
Centroid or Barycenter
Subtraction