The basic expression of the experimental teaching mode of open education in Chengdu Radio and TV University is: "under the guidance of distance education theory, students are the center, courses are the unit, the network is the environment, services are the support, the process is the focus, and tracking and monitoring are the quality assurance". Simply described as "3+2" teaching mode, "3" is the three basic elements of teaching and learning in open education, and "2" is the two operating systems of "supporting service and quality assurance". One or three elements 1. student Take students as the center and carry out organized autonomous learning. According to the majors that students choose independently, and on the basis of the suggestions for students to choose courses independently in open education, they choose their own courses. Under the guidance of the detailed teaching rules of each course, choose the learning method independently; Choose learning media independently through multimedia integrated teaching design scheme; Choose the study time independently according to the students' own situation. 2. courses. Carry out activities of guiding, assisting and promoting learning on the basis of courses, and provide students with pre-school guidance on teaching implementation rules; Provide student assistance services to students through centralized counseling, online Q&A, practical activities and telephone communication. Promote students' learning with various systems and measures. 3. network. Various teaching activities are carried out under the network environment, and based on the three-level teaching platforms of Central Radio and TV University, Chengdu Radio and TV University and branch schools (the directly affiliated colleges only have the first two platforms), which provides rich teaching resources and solves the problem of separation of teaching and learning in time and space. There are abundant online teaching resources, including teaching plans, outlines, implementation rules, courseware, classroom live broadcast, course guidance, course assignments, self-test and so on. There are various forms of online teaching, including real-time and non-real-time teaching activities, including the interaction between teachers and students, students and students, and teachers and people. Two. II system 1. Support services. Teachers, infrastructure and technical environment constitute the main support service system for teaching and learning. In the process of supporting service, teachers play a leading role, mainly in teaching design, guiding learning, assisting students and promoting learning, serving the whole teaching process; Infrastructure, teaching resources and technical environment are important guarantees for carrying out teaching activities. 2. Quality assurance. Tracking and evaluating the whole teaching process is an important guarantee to strengthen the teaching quality of open education, including students' independent learning process record, formative evaluation, various courses evaluation, open education level test analysis, face-to-face course quality analysis, students' formative evaluation analysis, final examination analysis, teachers' online teaching quality report, patrol teaching quality analysis and so on.