利用数轴与矩形面积模型比较分数大小
2016-02-18 08:41
本GeoGebra范例通过数轴和矩形面积两种可视化方式演示分数的比较方法。利用线段（Segment）在数轴上标记分数位置，通过多边形（Polygon）和缩放（Dilate）构造矩形面积模型，结合平移（Translate）与序列（Sequence）命令动态展示不同分数的大小关系。该交互式课件适合小学数学教学，帮助学生直观理解分数的意义，掌握通分比较、图形面积比较等策略，培养数感与几何直觉。
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