Preview is an important part of reading textbooks before class and acquiring new knowledge by self-study.
To preview new lessons that have not been taught before class, we should first read the contents of the new lessons carefully, and understand the knowledge system, key points, difficulties, scope and requirements of the teaching materials through reading, analysis and thinking. For physical concepts and laws, we should grasp their core, as well as the differences and connections with other physical concepts and laws, and record the difficult problems that we don't understand in textbooks. If you forget what you have learned, you can make up for it in time when you preview before class, so that class will not be difficult. Then look at the content of the new lesson, find out the connection between knowledge points, master the context of knowledge, and draw a sketch of knowledge structure. At the same time, we should look at typical examples and find ways to solve them. It is necessary to check the reading effect by solving the exercises at the back of the book and summarize the general ideas and steps of solving the problem. Students with ability can also read extracurricular books with relevant contents appropriately.
Second, actively improve the efficiency of lectures
Listening to lectures with previewed questions can improve the efficiency of lectures and make the focus of lectures more prominent. In class, the teacher talked about what he didn't understand in the preview. He was very active, paid special attention and wanted to understand in class. At the same time, you can check the depth and breadth of your understanding of the textbook against the teacher's explanation, learn the teacher's analysis process and thinking method of difficult problems, and also ask questions, question and put forward your own views. In this way, after listening to the class, we can not only grasp the key points of knowledge, break through the difficulties and grasp the key points, but also better grasp the teachers' ideas and methods of analyzing and solving problems, and further improve their learning ability.
Third, organize your study notes regularly.
In the process of learning, through reviewing what you have learned and comparing preview notes, lecture notes, homework, standard tests, textbooks and reference books, your knowledge can reach a systematic, complete and highly summarized level. Study notes should be concise, easy to read, clear at a glance, in line with their own characteristics. Do it regularly according to the system of knowledge itself, and sort out and summarize the study notes in order to systematize the knowledge. Save the results of these thoughts in time, and when you review later, you can quickly return to the height you have reached. If you trust your memory and don't take notes while studying, you will often forget when to use it. What a pity!
Fourth, review, summarize and improve
If you don't review the knowledge you have learned and the exercises you have done in time, and don't summarize them, it will easily lead to the fragmentation of knowledge and the tendency to learn physics in isolation and mechanically. The result must be a large piece of physical content, a lot of laws and formulas, but the specific process is not clear, and the relationship between physical quantities in the formula is not well understood. We can't focus on the overall situation and use physical concepts and laws flexibly to solve specific problems. So review and summarize in time after class. After-class review should not only organize notes, complete homework after each class, but also review chapters. We should always find out the essence, internal relations and development process of things through comparison and identification, and summarize them in time.