Abstract: The "Internet plus" teaching model has witnessed an explosive development due to the impact of COVID-19. The application of micro-lessons and online learning platforms has broken the traditional classroom teaching mode, and learners have stronger learning autonomy, which can get rid of the time and space restrictions. However, this teaching mode greatly weakens teachers' ability to dominate and control teaching activities, and the interaction between teachers and students inevitably leads to insufficient coverage and attention, thus affecting the teaching quality. In order to improve the quality of online teaching of polymer chemistry course, combine the advantages of online and offline teaching, and solve the existing problems and deficiencies, this paper focus on the online teaching interaction based on Tencent classroom and Superstar Fanya platform.

Key words: Teaching interaction, Tencent classroom, Fanya platform, Online teaching