Abstract: During the prevention and control of COVID-19, online teaching by teachers and students in colleges and universities has gradually become “normalized”, but online teaching for internship courses alone cannot meet the teaching needs. In order to reduce the impact of COVID-19 on teaching activities, the biology field practice teaching team adjusted the teaching design in a timely manner, continuously improved the teaching links, and carried out the biology field practice teaching using the “online + home” model. The online includes online lectures, reports and exchanges, virtual visits, virtual simulation experiments, etc., while the home makes full use of the offline resources of the students’ families to carry out fieldwork, species identification and retrieval, and specimen making. Practice has shown that the internship model has achieved good teaching results by integrating and sorting out online teaching resources, exploring and using offline resources at home for students. The design, implementation and effects of the internship model are analyzed and summarized, with a view to providing reference for the later professional education and the teaching methods of related courses during the prevention and control of COVID-19.

Key words: field practice, biology, online teaching, practice at home, exploration