一、激趣设疑，重现概念过程兴趣是最好的老师。《论语·雍也篇》中说：“知之者，不如好知者，好知者，不如乐知者。”数学概念教学的第一步是引入概念，它是理解和应用概念的前提。由于数学概念具有高度抽象性和概括性，在概念引入时，教师要以激发学生兴趣为切入点，创设教 First, the excitement set suspicion, to reproduce the concept of process interest is the best teacher. “The Analects of Confucius Yong Ye Pian,” said: “Known, as good as good, well known, not as optimistic.” The first step in the teaching of mathematical concepts is the introduction of concepts, it is the premise to understand and apply the concept. Due to the high degree of abstraction and generalization of mathematical concepts, when teachers introduce the concept, teachers should take the stimulus of students’ interests as the starting point and create teaching