To giving some reference , this paper discusses the design of the instroduction , stirring up doubts , multimedia teaching and the content disposal about the emphacs and difficulty of the lessen of the base principle and structure of the dc motor 摘要圍繞直流電機的基本工作原理與結構這節(jié)課的重點和難點,結合教學實踐,從導語設計、激疑教學、多媒體教學、教材內容處理等4個方面對其教學方法進行了討論,以期對教學同行提供借鑒。