在高中数学课堂教学过程中,例题讲解课一直占据重要的地位.如何有效地提高例题讲解课的课堂效率,是许多数学教师困扰的一个问题.平时教学中,精选一些富有探究性和切实提升学生思维能力的典型习题进行推广、变式探究,通过师生共同综合、选择、确定待解决的学生“最近发展区”内的问题,不断转换、分解,对拓宽学生的解题思路,培养 In the process of high school mathematics classroom teaching, the example class has always occupied an important position.How to effectively improve the class efficiency of the example class is one of the problems plagued by many math teachers.In the usual teaching, we select some rich and exploratory Students ’ability to think about the typical problems of promotion, variant exploration, teachers and students through the common synthesis, selection, to determine the students to be addressed “recent development ” within the problem, continuous conversion, decomposition, to broaden students’ problem solving ideas, to cultivate