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Author:
enming
GeoGebra
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撒针估算面积实验
圓的基本性質
第三周作业效果演示
第八周作业3
第八周作业1
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異分母的分數加減
直線排列 4
Copy of 七巧板
拋體運動
彩色莫比乌斯环
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Numbers
Division
Limits
Sphere
Multiplication