Constructing Diversified online Teaching Based on Rain Classroom

In the first half of 2020, at the time of the epidemic, the national education entered the period of online teaching. The practical experience of online and offline mixed teaching done by the authors in the early stage provided a strong support for our online teaching. The most difficult part of online teaching is that teachers can't see students and students can't see teachers. Therefore, the effect of teachers' teaching has been affected and the atmosphere of students' learning is not strong. Based on the Rain classroom, the auther constructs diversified online teaching from four aspects: pre class preview, classroom teaching, homework correction and online feedback, stimulate students' interest in active learning, improve their ability to find, analyze and solve problems, so as to achieve teaching objectives. Through continuous conception and practice, good teaching results have been achieved. It will escort online teaching and provide good ideas for online and offline hybrid teaching.