论文部分内容阅读
抛物线的图象在数学教学中经常用到,用粉笔在黑板上画抛物线不标准,也不美观,而用“几何画板4.07”就能快速、准确解决这个问题,大大地节省教学时间,提高课堂教学效率,还会增强趣味性。现仅就如何用几何画板作抛物线,介绍几种实用的方法。一、直接使用“绘制新函数”画抛物线在实际教学中,若要分析一条已知抛物线的性质,可直接使用“图表”菜单中的“绘制新函数”。其操作如下:打开几何画板,点击图表,建立坐标系,点击
Parabolic images are often used in mathematics teaching, with chalk on the blackboard to draw the parabola is not standard, not beautiful, but with “Geometry Sketchpad 4.07 ” can quickly and accurately solve this problem, greatly saving teaching time, Improve classroom teaching efficiency, but also enhance the fun. Now just how to parabolic geometric drawing board, introduced several practical methods. First, the direct use of “draw a new function” draw a parabola In the actual teaching, to analyze the nature of a known parabola, you can directly use “chart ” menu “draw a new function ”. Its operation is as follows: Open Geometry Sketchpad, click on the chart, create a coordinate system, click