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聯立方程式
Author:
曾己泉
GeoGebra
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斐波那契螺旋弧线（表格法）
第三周作业效果演示
斐波那契螺旋弧线（表格法-可动态调节）
撒针估算面积实验
科赫雪花
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Rectangle_03
正六面體摺疊
trigonometry1
示例2
基础知识
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Symmetry
Quadratic Functions
Rhombus
Constructions
Curve Sketching