概念的引入是从直接感知的有关事物或借助模型直观获得经验,建立起事物的表象,再进行抽象概括,初步形成概念的过程。它是概念教学的第一步,概念引入的好坏往往直接影响着学生对整个概念的理解效果,好的引入可以集中学生的注意力、启发他们学习动机,使学生能抓住听课的重点,产生强烈的求知欲望。因此,概念教学应根据教学内容 The concept is introduced from the direct perception of the relevant things or with the model intuitive experience, to establish the appearance of things, and then abstraction, the concept of the initial formation process. It is the first step of concept teaching. The introduction of the concept often directly affects the students ’understanding of the whole concept. A good introduction can concentrate students’ attention, inspire them to learn motivation and enable students to grasp the key points of lectures, Produce a strong desire for knowledge. Therefore, the concept of teaching should be based on teaching content