立足中学化学基本概念教学,建立了“讲授行为”的表征模型,对专家和新手教师课堂中的讲授行为特征进行了描述与解读。专家教师多从社会生活生产中提出问题,通过学生分组实验形成事实,最后让学生来形成概念,“讨论式讲授”“探究式讲授”是其讲授特点。新手教师多从新课中提出问题,通过回忆已有知识形成事实,课堂中的“直述式讲授”最多,最后多由教师来形成概念。 Based on the teaching of basic concepts of chemistry in middle schools, a characterization model of “teaching behavior ” was established, and the characteristics of teaching activities in the classroom of experts and novice teachers were described and interpreted. Experts and teachers from the production of social life to ask questions, the formation of the fact that students group experiments, and finally let the students to form a concept, “Discussion Teaching ” “Inquiry Teaching ” is its teaching characteristics. Novice teachers often ask questions from the new class, forming the fact by recalling the existing knowledge. In the class, “direct teaching” is the most, and finally teachers form the concept.