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参数法是一种重要的数学方法,参数法的思想几乎渗透到了数学的每个角落。在中数教学中,应将这种思想方法摆在相当重要的地位。然而,对中学生来说,参数法又是一种较难掌握的方法,不经过长期的训练,就难于确立参数的思想。数学教学中,在正式教授解几教材中的《参数方程与极坐标》这一章以前,最好是解析几何一开始就开始对学生进行参数法思想的渗透。而介绍点参数法,就是实现这种渗透的较好方法。所谓点参数法,就是以动点的坐标为参数的方法。以下就几个主要问题分别予以说明。
The parametric method is an important mathematical method. The parametric approach has penetrated almost every corner of mathematics. In the teaching of medium numbers, this ideological approach should be placed in a very important position. However, for middle school students, the parametric method is also a difficult method to grasp. Without long-term training, it is difficult to establish the idea of parameters. In mathematics teaching, before the official teaching of the chapter “Parametric Equations and Polar Coordinates” in several textbooks, it is best to begin the analysis of students’ parametric thinking from the beginning of analytic geometry. Introducing the point parameter method is a better way to achieve this penetration. The so-called point parameter method is a method that takes the coordinates of a moving point as a parameter. The following is a description of several major issues.