课堂是解决问题、消除困惑的场所,是课外所学知识的延伸。在认识高中化学“先学后教,小组合作探究”的课堂教学模式的存在基础和科学适用性的基础上,对如何运用好“先学后教,小组合作探究”做一些初步的经验总结和理论阐述,对现阶段高中化学教学方法、学习方法的改革以及如何提高课堂效率有一定的指导作用。 Classroom is a place to solve problems and eliminate puzzles. It is an extension of knowledge learned after class. On the basis of recognizing the existing basis and scientific applicability of the classroom teaching mode of “learning from the first to the after, teaching to explore with the cooperation of the group”, this paper does some preliminary research on how to make good use of " The experience summaries and theoretical expositions have some guidance to the present high school chemistry teaching methods, the reform of learning methods and how to improve the efficiency of the classroom.