【摘要】 对分课堂教学范式明确将课堂划分为讲授、内化吸收、小组讨论、教师答疑四个板块，教师和学生共同参与课堂，共同主导课堂，称为“四元教学法”，既体现了“以教师为中心”，又体现了“以学生为中心”，四元教学实现了高效、闭环的教学过程。本文作者在疫情期间，响应“停课不停学”，“高效等效教学”等号召，基于BOPPPS教学设计，运用线上对分课堂教学范式，积极在《皮肤性病学》课程中探索与运用，取得了满意的效果。更多还原

【Abstract】 For the PADD-class teaching paradigm, the class is clearly divided into four parts: Presentation,Assimilation,Discussi on and Dialogue, teachers and students in the classroom, leading class together, referred to as the "four teaching methods", reflected the "teacher centered", and embodies the "student-centered", four teaching to achieve the high efficiency, closed-loop process of teaching.During the epidemic period, the author responded to the call of "school suspension without suspension" and "efficient and equivalent teaching", based on BOPPPS teaching design, and used the online PADD-class teaching paradigm, actively explored and applied in the course of dermatology and Venereology, and achieved satisfactory results.更多还原