What are the irreplaceable points of traditional blackboard in classroom use?

It can be said that the blackboard bears the memories of all readers, especially in the context of exam-oriented education in China. Blackboard has become a tool for teachers to teach by the book, and also a model for students to record knowledge points and learn to answer questions neatly. This is a pessimistic view and a one-sided understanding. The blackboard is a piece of soil, and the teacher works hard on it. No matter what attitude you hold in your study, the teachers on the stage are wholeheartedly explaining. Maybe you hate him, maybe you like him very much. None of this matters. The important thing is that teachers should guide you to grow up like this, how to learn and how to be a person. Blackboard has become a way.

The blackboard is forgetful. He has tasted the taste of life. He can record neat blackboard writing, endure students' blackboard writing, and endure naughty children's careless drawing. In fact, the blackboard itself is also advancing with the times. The blackboard used to be a real blackboard. After a flat plate is painted with black paint, it is a blackboard. Now the blackboard is made of various materials, some are automatically equipped by computers, and some may be a piece of white cloth. In short, as long as it carries all the media that can make you learn knowledge, it can't be said to be a blackboard.

Blackboard is constantly evolving, so as a person, you should keep learning. Blackboard is a platform for communication between teachers and students, which is mainly used for teachers to write on the blackboard and students to perform. A lot of content appears in the classroom immediately, and the teacher can't show it with the courseware prepared in advance, so a platform that can present the content immediately for students to watch is needed. So the blackboard appeared.

A class lasts for 45 minutes, that is to say, children have to turn left and right for nearly an hour. They are not medical majors, so they can't say there is any harm. But for an adult, keep turning your head for ten minutes at most, not to mention those children. In addition, if you want to look at the blackboard and don't want to turn your head hard, you can only look sideways, not far from strabismus.

Everything in the world has its advantages and disadvantages. Only for phenomena, not for teachers who work hard all over the world. A student always gets poor grades for his own reasons, such as me, which has nothing to do with the teacher. Maybe I'm just mystifying and moaning, but if I walk on the road and want to avoid stepping on the pit, I must know where the pit is.