I have heard of the "three-more method" of "understanding more, practicing more and summing up more" summarized by a middle school student in Shanghai. I think this method can summarize the main points of physics learning in senior high school.
Understanding is more about previewing, attending classes and reviewing, and understanding what you have learned from different levels and angles. Preview can be divided into rough reading and intensive reading. Take a cursory look at what you want to learn first, and circle the important parts in the form of subtitles. Then read the circled part carefully and have a deep understanding, that is, intensive reading. In class, you can listen to the teacher explain the difficult points and answer questions purposefully. Only in this way can we understand knowledge more comprehensively and thoroughly. In after-class review, in addition to understanding and memorizing formula theorems, we should also deeply understand the teacher's lecture ideas and the "central idea" of solving problems, that is, grasping the knowledge points of examples and applying formulas of what theorems to make them orderly and procedural.
More practice refers not only to the practice of consolidating knowledge, but also to the "practice" of psychological quality. To strengthen the practice of attention, we should not only complete the exercises in class seriously, but also complete a certain amount of extracurricular exercises. However, simple "sea tactics" is not desirable, and some representative questions should be selected. Students with a good foundation have to do some comprehensive problems and application problems. In addition, Pingyue should pay attention to adjusting the mentality and cultivate a calm and confident psychological quality.
To sum up, we should first classify and sort out the classroom knowledge in detail, especially the theorem, deeply understand its connotation, extension, derivation and scope of application, sum up the relationship between various knowledge points, and form a knowledge network in our minds. Secondly, we should analyze and summarize the solutions to various problems. Another kind of summary is also very important, that is, after the usual practice and examination, analyze your own mistakes and weaknesses in order to overcome them in the future.
Chemical Research
To learn chemistry, we must grasp the foundation, ideas and laws. Paying attention to the study of basic knowledge is the guarantee of improving ability. Learn the basic concepts of chemical terms such as element symbols, chemical formulas, chemical equations and properties of elements and compounds. To do problems, you should be good at summing up the types of questions and solving problems. There are inherent laws between chemical knowledge. If you master the rules, you can control and remember knowledge. Such as the general law of valence, metal elements usually show positive valence, nonmetal elements usually show negative valence, the valence of simple elements is zero, and many elements have valence changes, and the valence States are different under different conditions.
There is a saying about chemistry that chemistry is a liberal art in science. Because chemistry has a lot to remember and is an experimental subject, we should pay attention to the combination of reading, hands-on and writing in the learning process of chemistry. You should deduce, calculate, write structural formulas, write chemical equations, or do experiments yourself to verify, deepen your impression and help you understand. Sometimes you have to look for information and supplement some materials. At the same time, in chemistry learning, it is a basic activity method and a basic method to improve the effect of chemistry learning to put forward the contradictions within or between chemical things after thinking, that is, to study and solve chemical problems by yourself or to ask others for help when they can't solve them.
References:
/question/ 14748690.html？ fr=qrl3