提出基于“学案和视频”导学教学模式,呈现该模式的教学流程,用该模式对“磁场对通电导线作用力”实施教学并作教后反思。 This paper puts forward a teaching process based on the teaching mode of “case study and video” and presents the teaching process of this mode. With this mode, the teaching of “magnetic field acting on the conducting wire” is implemented and taught as a reflection after teaching.