一、在“逆例(型)”中导入,培养逆向思维意识大部分数学知识有着一定的生活原型,教师喜欢在新授教学的导入环节寻找生活原型,创设有明显生活原型的教学情境,唤醒学生已有的生活体验,试图拉近知识与学生的距离,让学生学得轻松而精彩。其实有不少生活原型,学生本来很熟悉了,课堂上还利用它们,学生容易熟视无睹,不但提不起兴趣,也难 I. Introduction and Cultivation of Reverse Thinking Consciousness Most of the mathematical knowledge has a certain prototype of life. Teachers like to find the prototype of life in the introduction of new teaching and create a teaching situation with obvious life prototype , Arouse the student’s existing life experience, trying to narrow the distance between knowledge and students, so that students learn relaxed and exciting. In fact, there are a lot of life prototypes, and students are already familiar with it. Students are also able to turn a blind eye to it in the classroom. Not only are they not interested, they are also hard