《超级画板》为数学探究性活动提供了有力的工具平台,用它作出一些特殊的点、线的轨迹已是一件非常容易之事.本文将基于《超级画板》从椭圆的作图问题延伸拓展,并从数学的角度解释得到的二次曲线轨迹.例1人教版普通高中课程标准实验教科书《数学》选修2-1第39页例3是这样的:设 “Super Sketchpad” provides a powerful tool platform for math inquiry activities, and it is very easy to use it to make some special point and line tracks.This article will be based on the super drawing board extending from the drawing problem of ellipse Expansion and interpretation from the mathematical point of the quadratic curve trajectory Example 1 PEP ordinary high school curriculum standard experimental textbook “Mathematics” 2-1 Page 39 Example 3 is this: Set