一、问题的背景为了颠覆传统课堂“一个人的精彩,多个人的寂寞”的窘境,笔者所在的高三数学教研组在课堂开展了有效的师生交流活动,建立了师生对话、生生对话的生本课堂.交流活动形式多样,其中“说数学”成为数学交流的主流形式之一.所谓“说数学”就是教师让位于学生,对书本中的定义、定理、公理、公式、性质、专业术语等都不直接给 First, the background of the problem In order to subvert the dilemma of traditional classroom “a person’s wonderful, a lot of people’s loneliness ”, the author’s senior mathematics teaching and research group carried out effective teacher-student exchange activities in the classroom, established teacher-student dialogue, dialogue between students and students. The student-centered classroom. There are various forms of communication activities, among which “mathematics” has become one of the mainstream forms of mathematical communication. The so-called “say mathematics” is where teachers give way to students, define books, theorems, axioms, Formulas, properties, technical terms, etc. are not directly given