逆向思维代表一种创造性思维.加强对初中学生逆向思维的训练,提高分析问题和解决问题的能力,培养学生思维的灵活性和创造性,是数学教学的重要任务之一.本文以“二次根式”解题教学为例,谈谈在这方面的粗浅体会和常用途径. Reverse thinking represents a kind of creative thinking. It is one of the important tasks of mathematics teaching to strengthen the training of junior high school students’ reverse thinking, improve the ability to analyze problems and solve problems, and cultivate students’ thinking flexibility and creativity. "Teaching problem solving as an example, talk about the rough experience and common ways in this area.