1, the current distance education mode is divided into synchronous teaching and asynchronous teaching, and the distance education mode is simply divided according to whether learning and teaching are completed at one time. Synchronization or asynchronism is only a means, and who will arrange the learning process for students is the core. Looking back on our offline classroom teaching process, the teacher first talked, then let the students discuss in groups, then the teacher asked questions, then let the students contact, and finally let the students go home to search for information on the Internet and express their opinions in the next class. This process can be completely moved online. Do you think it's synchronous or asynchronous? Did you leave your sermon credits?

2. Therefore, the author believes that it is very simple to separate teaching as long as we look at the problem from another angle and divide distance education into two modes: project-oriented and teacher-oriented. Program-oriented (courseware on demand, intelligent evaluation, learning guidance) is just a learning process, and there is no teaching at all. The so-called distance education can be understood as a learning resource platform. Learners are only using learning resources, which is not essentially different from reading, so there is no so-called separation between teaching and learning.

3, teacher-led, that is, teachers arrange students' learning plans, when they need synchronous interaction, when they need courseware learning, and when they need self-evaluation. At this time, teaching is inseparable, just like classroom teaching.