How to improve math and physics in ten days?
In fact, high school mathematics is very simple. If you make up your mind, you should do more different types of problems, thoroughly understand several methods of solving problems, pay more attention to several possible problems and relax. There will be a lot of exercises, and the same type of questions will be practiced repeatedly. As long as you are serious, the problem is not big. The most important thing is to keep the right attitude. As long as you are tired, just do the basic things well. As for physics, everything is the same as mathematics. It will be more difficult to learn physics well. If you learn physics well, you just memorize all the important formulas and understand some classic topics thoroughly. Physics is a natural science course that is difficult to learn. You can't learn by rote. If you recite word by word, you will not be able to solve a problem. Physics is taught in junior high schools, senior high schools and universities respectively. There are many qualitative things in junior high school, many quantitative things in senior high school and more quantitative things in universities, and we must use advanced mathematics to calculate them. So, how to learn physics well? If you want to learn physics well, you should not only learn physics well, but also learn other courses such as mathematics, chemistry, Chinese and history, that is to say, learn what you want. In fact, in school, the students we meet who study well do well in all subjects, while the students who study poorly do poorly in all subjects, which is basically the case. In addition to the innate factors of small probability, there is indeed a learning method problem here. Who doesn't want to be a good student, but if you want to be a really good student, the first thing is to study hard, that is, to dare to endure hardships, cherish time and study tirelessly. Establish confidence, firmly believe that you can learn any course well, firmly believe in the "law of conservation of energy transformation", and firmly believe that you should get several times if you pay a few times. Please read the following three quotations about this article: I never believe in any innate or acquired talent, and I can succeed without firm and long-term efforts. Dickens (English writer) The main reason why some people can far surpass others is not so much genius as his indomitable spirit, that is, to concentrate on their studies and never give up until they reach their goals. -Dalton (British chemist) The fastest and slowest, longest and shortest, most common and most precious, most easily overlooked and most regrettable thing in the world is time. -Gorky (Soviet writer) The first thing mentioned above should be said to be the problem of learning attitude and thinking method. The second is to understand that there are eight links in learning as a student: making a plan → previewing before class → paying attention to class → reviewing in time → working independently → solving problems → systematically summarizing → studying after class. The most important thing here is: concentrate in class → review in time → work independently → solve problems → summarize systematically. In the above eight links, there are many learning methods. According to the characteristics of physics and how to learn physics well, some specific learning methods are introduced below. (1) Sanji. Basic concepts should be clear, basic laws should be familiar, and basic methods should be skilled. Give an example about the basic concept. Like speed. It has two meanings: one is to express speed; The second is the ratio of distance to time (such as in uniform circular motion), and the speed is the ratio of displacement to time (in uniform linear motion). There are two formulas for calculating basic laws, such as average speed, V=s/t and V=(vo+vt)/2. The former is a defined formula, which is applicable to any situation, and the latter is a derived formula, which is only applicable to the case of uniform linear motion. First of all, the basic methods commonly used to study middle school problems, such as holism and isolation, are typical supplementary methods. Finally, another question belongs to three basic problems. That is, in the process of learning physics, we sum up some concise and practical inferences or conclusions, which are very useful for solving problems and learning physics well. For example, "the potential decreases along the electric field line"; "The tension on the same rope is equal"; "Maximum speed when acceleration is zero"; "Lorentz force does not do work" and so on. (2) Do the problem independently. Do some problems independently with good quality and quantity (meaning not relying on others). There must be a certain number of topics, not too few, but also a certain quality, that is to say, there must be some difficulty. Anyone who studies mathematics and physics can't learn this level well. Solving problems independently may sometimes be slow, sometimes you have to take detours, and sometimes you can't even solve them, but these are normal and the only way for any beginner to succeed. (3) Physical process. To clarify the physical process, there must be hidden dangers in solving problems if the physical process is not clear. No matter how difficult the topic is, try to draw as much as possible, some can draw sketches, and some need to draw accurate pictures, using compasses, triangles, protractors and so on. To represent geometric relationships. Drawing can turn abstract thinking into image thinking and master physical process more accurately. With this diagram, we can make state analysis and dynamic analysis. State analysis is fixed, dead and discontinuous, while dynamic analysis is alive and continuous. (4) attending classes. Listen carefully in class and don't think or think as little as possible. Don't be self-righteous, learn from the teacher modestly. Don't give up listening just because the teacher speaks simply. If this happens, it can be regarded as review and consolidation. Try to be consistent and synchronized with the teacher, and you can't do it yourself, otherwise it will be self-study. After getting started, with a certain foundation, you are allowed to have your own activity space, that is, you are allowed to have something of your own. The more you learn, the more things you have. (5) notebook. Class is mainly based on listening, and there are notebooks, and some things should be written down. Knowledge structure, good problem-solving methods, good examples, places you don't understand, etc. Should be recorded. After class, you should sort out your notes, on the one hand, you should "digest" them, on the other hand, you should supplement your notes. Notebook is not only to remember what the teacher said in class, but also to make some reading notes. Good problems found in homework and good solutions should also be recorded in a notebook, which is what students often call a "good problem book". Hard-won notebooks should be numbered, studied later and kept for life.