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靳道阳
GeoGebra
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龙形曲线-分形龙2
撒针估算面积实验
三角函数 的副本
盈利與虧蝕
斐波那契螺旋弧线（表格法）
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Sectors 扇形
Parameter
五複合正6面體
摺長方形
一次函数图像的平移
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Limits
Algebra
Calculus
Cylinder
Addition