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所谓参数法,是指在解题时,适当引入一些与题中研究的数学对象发生联系的新变量——参数,再进行分析、推理、列式,使问题获解的方法。解题时,有的放矢地运用参数法,充分发挥其特有的功能,可以有效地控制、调节、支配学生的思维活动,确定解题思路,从而使一些题目化难为易。解小学几何题引入参数法,一般来说可以分为两类:一是添线参数,二是增元参数。
The so-called parameter method, refers to the problem-solving, the appropriate introduction of some of the problems associated with the study of mathematical objects of the new variables - parameters, and then analysis, reasoning, explicit solutions to the problem. Problem-solving, targeted use of parameter method, give full play to its unique features, you can effectively control, adjust, dominate the thinking activities of students to determine the problem-solving ideas, so that some of the problems become difficult. Solution to the elementary geometry problem introduced parameter method, in general, can be divided into two categories: First, Tim line parameters, the second is incremental parameters.