First, the advantages of online teaching

1. Online teaching is not limited by region. Through a computer, a mobile phone can carry out teaching activities anytime and anywhere, and teachers and students can complete teaching tasks at home.

2. Network teaching enriches the teaching and learning methods of teachers and students. There are many excellent course resources on the Internet, such as "wisdom tree", "online cloud classroom" and "micro-classroom for learning a powerful country". In the past, due to the limited hardware conditions, students could not watch micro-lessons and do virtual operations with tablet computers in class.

Network teaching can make use of all kinds of high-quality educational resources on the network, recommend them after screening, guide students to learn, and help improve the quality of learning content.

3. Network classroom can make use of the advantages of multimedia to make teachers' classroom explanations concrete, intuitive and visual, thus helping students to grasp key points and break through difficulties. In addition, students' online operation can stimulate their desire to explore knowledge.

4. The online teaching forms are richer and more diverse, with live broadcast, recording and broadcasting, group class and other interactions. It breaks the limitation of traditional teaching in time and space and is easy to expand knowledge.

Second, the shortcomings of online teaching

1, the teacher can't grasp the students' listening state, can't feedback the listening effect in time, and can't manage the students well in class. In addition, during the live broadcast, the teacher can only connect one classmate at a time, so it is impossible to realize group communication. This way makes the interaction and communication between teachers and students and between students very limited, so that teachers can't grasp the students' listening state well to adjust the teaching rhythm.

2. Lack of effective control over students. Students with low self-control are inattentive in class, playing games, listening to music, watching movies, chatting, and even leaving the classroom halfway. Teachers can't stop it in time, which affects the teaching effect.

3. Traditional teaching has the advantage of direct face-to-face communication between teachers and students, which is irreplaceable by online teaching. When surfing the Internet, students can't feel the encouraging eyes and smiles of teachers, and the communication intermediary with teachers is just a cold "role".

4. The feedback effect after class is poor. The teacher arranged online work and asked the students to submit it in time. However, students' homework is easy to be perfunctory, copied or completed with the help of search software, so the feedback effect after class is invalid, and teachers can't find problems through students' homework and make teaching adjustments in time.

5. Network teaching has a great influence on teachers' and students' eyesight. Using computers and mobile phones to prepare lessons in online teaching has a negative impact on teachers' and students' eyesight.