What are the problems and deficiencies in classroom lead-in?

There are some problems in the lead-in, such as blunt lead-in, single method, improper time control, lack of interest, lack of contact, lack of effective interaction and lack of adaptability. The improvement countermeasures are that normal students should learn professional knowledge well, lay a good foundation for their majors, understand the new curriculum standards and be diligent in reflection.

The necessity of improving classroom lead-in by using information technology;

The introduction of science classroom should be novel and unique, and the application of novel and unique introduction to the classroom can bring students a bright feeling. This effect is very obvious when students are always full of interest and curiosity in front of new things.

Let's not always apply this effective lead-in to any classroom. If something new is used too much in front of students, it will become obsolete.

Students' interest will also decline. We should accumulate more good lead-in methods and actively try to create some by ourselves in the teaching process.