展开圆面积动态演示（讲义版）
2014-03-15 04:03
本GeoGebra范例通过动态几何构造，直观演示了圆面积公式的推导过程。利用序列（Sequence）等命令将圆形分割并展开，帮助学生理解圆面积与半径及周长的关系。适用于课堂教学辅助，结合滑块动画展示极限思想在几何面积计算中的应用。
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