1. Smarter blackboard: After 20 years, the blackboard may be replaced by a smart screen, and teaching will be more convenient through gestures and voice control.

2. Virtual reality teaching: With the continuous development of virtual reality technology, virtual reality technology may be adopted in the classroom after 20 years, so that students can learn immersive. Various technical means can be used to promote the intelligent development of education. New technologies such as the Internet of Things and big data can be introduced to help educational institutions better analyze educational information and explore students' learning characteristics, thus achieving better educational intelligence.

3. More comfortable seats: Twenty years later, seats may be more ergonomic, making students more comfortable in long-term study.

4. Personalized teaching: With the development of artificial intelligence technology, personalized teaching may be realized in the classroom after 20 years, and differentiated teaching may be carried out according to students' interests and abilities.

5. Paperless teaching: Paperless teaching may be realized in the classroom in 20 years, and all teaching materials and homework can be transmitted and processed through electronic equipment.

6. It will be combined with artificial intelligence (AI) technology to realize intelligent education. AI technology can automatically adjust the teaching rhythm according to students' learning characteristics and level, thus improving the learning effect. AI technology can also help teachers analyze students' learning situation and customize the most suitable learning plan for students.