逆向思维顾名思义,与正向思维相反的思维过程,就是按研究问题的反方向思考的一种方式。在解题中从问题的正面思考时往往会陷入困境,此时若从问题的反面思考则会绝处逢生,使问题迎刃而解。逆向思维是克服了正向思维的心理定势,突破旧有思维框架,产生新思维,发现新知识、新解法的重要思维方式。而很多数学知识都具有可逆结构,因此在数学教学过程中加强逆向思维的训练,不仅可以加强对原有知识的理解,而且还可对知识从不同的角度、不同的层次和 Reverse thinking, as the name implies, is a way of thinking in the opposite direction of the research question, as opposed to positive thinking. In the problem-solving from the positive thinking of the problem often will be in trouble, then thinking from the opposite side of the problem will be perishable, so that the problem be solved. Reverse thinking is an important way of thinking that overcomes the psychological tendency of positive thinking, breaks through the old thinking frame, creates new thinking, discovers new knowledge and new solution. And many mathematical knowledge has a reversible structure. Therefore, strengthening the training of reverse thinking in mathematics teaching can not only strengthen the understanding of the original knowledge, but also improve the knowledge from different perspectives, different levels and