First, the teacher teaching system

Function: imparting knowledge to students through teachers' lectures.

One-way system is broadcast mode, students can hear the teacher's voice and see the teacher's image, but the teacher can't see the student's image and voice and can't interact with the students.

Second, students' autonomous learning system

Function: Students use the educational resources in the distance education system for autonomous learning. This is an important aspect that distinguishes the distance education system from ordinary school education.

Autonomous learning system is usually made into multimedia electronic teaching materials by teachers or professionals, called courseware, and then put on a special server. Students can access these electronic teaching materials anytime and anywhere through the network to achieve the purpose of autonomous learning.

Third, question and answer system.

Function: Answer the problems students encounter in the learning process and check the learning effect of students. Question answering system is an important part of distance education system. In the existing distance education system, the question answering system usually uses BBS, E-mail or online classroom on the Internet to realize the discussion between students and teachers.

Fourth, homework and examination system.

Function: Responsible for the arrangement, submission and correction of students' homework and the test of learning effect.

V. Teaching and educational administration system

Function: comprehensive management of student registration, payment, courses, grades and student status. Teaching and educational administration management system is an indispensable part of distance education system.

In the existing distance education system, it is generally not completely open, and only registered students can freely use teaching resources. The system must have a corresponding student identity authentication system and track the learning process.