2. Targeted and virtual: blackboard writing is a supplementary content of the textbook, which allows students to copy easily through the teacher's relatively complete and systematic blackboard writing. In addition, it is necessary to combine reality 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 words 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 parts and auxiliary parts. The main part is a systematic blackboard writing for teaching the content of teaching materials; The auxiliary part is flexible and often used to write words, phrases, concepts and old knowledge related to this lesson. If you plan carefully, under normal circumstances, it is enough not to wipe in class, so a blackboard is written in one class and the 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 neatness and aesthetic principle: The so-called correct neatness means that the writing should be standardized, typos should not be written, the stroke order should be correct, the handwriting should be clear, beautiful and neat, Chinese characters are square characters, attention should be paid to the shelf structure, and teachers should take care of the factors such as the center of gravity, balance, unity, symmetry, coordination and echo of each word when writing on the blackboard. Only in this way can we adapt to students' vision and give them a sense of beauty and pleasure.
5. Design a sample before class, and be aware of it in class: Many experienced math teachers, on the basis of in-depth study of textbooks and careful preparation of lessons, design a practical "blackboard outline" before class, which is attached to the teaching plan. In class, because we know the content of blackboard writing, the explanation and blackboard writing cooperate with each other more orderly and the effect is better.
6. Combination of speaking and writing at an appropriate speed: In classroom teaching, according to different teaching materials and class types, the methods of speaking before writing, writing before speaking or talking while writing are adopted. 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.
7, illustrated, vivid and eye-catching: in mathematics classroom teaching, not only blackboard writing, formulas and symbols, but also drawing. Bright and concise mathematical figures, coupled with concise text descriptions, can deepen students' understanding of teaching materials. The combination of numbers and shapes is not only necessary for the content of mathematics textbooks, but also necessary for intuitive teaching methods. Never doodle at will. Writing on the blackboard is an important means of classroom teaching and a necessary basic skill for every teacher. In order to improve the quality of classroom teaching, we must strive to improve the artistic level in this field.
8, thought-provoking, stimulate interest in learning: blackboard writing should be conducive to the development of students' intelligence, unique and thought-provoking. To make writing on the blackboard enlightening, we should not write on the blackboard for the sake of writing on the blackboard, but use it properly.