1, blackboard writing "board" is on the point.

Writing on the blackboard, like explaining, is "less but better". Writing on the blackboard should be "less books" and "fine books"; On the main points of books on the blackboard, books on key points play the role of "finishing touch" and "outlining". If there are too many books or books on the blackboard, the whole blackboard will have a "one pot of porridge" phenomenon, with no focus and poor effect.

2, targeted, the combination of reality and reality

Writing on the blackboard is a supplement to the content of the textbook, and it should be combined with reality. Some contents need to be written on the blackboard word by word, and some contents don't need to be written on the blackboard, so they are omitted and hidden in the blackboard. Students can understand them by the teacher's narrative or push them down according to the context. This not only saves time, but also helps to cultivate students' note-taking ability.

3. Careful design and reasonable layout

The general "mode" of blackboard writing is to divide the blackboard into main board books and auxiliary blackboard books. As a systematic blackboard book, the main board book teaches the content of teaching materials; The auxiliary blackboard is flexible and changeable, and is often used to write words, phrases, concepts and old knowledge related to this lesson.

Under normal circumstances, it is enough not to wipe in class, so write a blackboard in one class and class is over. After class, others can know the internal logical structure and teaching process of the knowledge system taught in this class at a glance by looking at the blackboard.

4, correct and tidy, highlight the key points.

The handwriting on the blackboard should be neat and clear. It is not allowed to write hyphens and simplified words. The handwriting on the blackboard must be neat. The content of the blackboard writing should be selective, and everything can't be written on the blackboard, so the blackboard writing will lose its meaning and the key points must be highlighted. The unimportant content should be written in the lower right corner as a sub-blackboard, which can be erased when appropriate.

5, speaking and writing, the speed is appropriate.

In classroom teaching, according to different teaching materials and class types, we should adopt the methods of speaking before writing, writing before speaking or writing while talking. We should be good at grasping the opportunity to make the bilateral teaching activities between teachers and students cooperate tacitly.

When you encounter some difficult definitions, you can write them on the blackboard first and then explain them word by word; Some easy properties can be summarized or deduced first, and then written on the blackboard; For example, some geometric arguments need to arouse students' thinking, so they can be written while talking and gradually developed.