Junior two students learn physics methods well 1. Look at things rationally, observe and think more, and be a person with a conscience in life!
What is physics about? The principle of everything? There are abundant and inexhaustible physical knowledge around us. Just keep a curious heart and pay attention to observing all kinds of natural phenomena and life phenomena. Look up at the sky, and you will find something in physics? Force, heat, electricity, light, primitive? Knowledge is everywhere in life. Once you get into the habit of using physical knowledge to solve various physical phenomena in your life, you will find physics so fascinating and interesting. !
2. learn from it? Definition? Find the cause of the error. Lay a good foundation.
Special attention should be paid to basic formulas, laws and concepts. ? You can never learn physics by memorizing knowledge! ? The cleverest students can find the root of mistakes from basic formulas and concepts, and can review a lot of knowledge from a wrong question? This is the most important sign for a student to learn physics or not!
3. release? Stranger? Become? Thorough? !
Encounter unfamiliar concepts, such as? Potential energy? Potential? Potential difference? Wait, don't reject it, accept it sincerely first, and then understand it by listening to the teacher's explanation, comparison and application. There is one kind. Don't break Loulan and swear not to return it? Determined and? What will happen next? Research spirit. After a long time, the application is more, and the unfamiliar will become thorough.
4. release? Wrong question? Become? Familiar questions? !
When you make a mistake, don't fish for two days and dry the net for three days. Persevere, don't give up halfway. In particular, we should pay attention to the establishment methods and skills of the wrong title book, and have our own innovation, wisdom and sweat condensed in it, striving to be pleasing to the eye and make people admire their masterpieces. And keep looking at it, narrowing the scope of the wrong questions every time you look at it, and finally there are fewer and fewer wrong questions until all of them are? Wrong question? Become? Familiar questions? ! If you encounter similar problems in the future, you will learn from others and never forget it.
No matter which part you learn, you should grasp the key points and the trunk. This is the smartest way.
As the saying goes? Hit the snake seven inches? Grasping the key is equivalent to grasping the lifeline. Moreover, every book, every unit, every class and every exercise has key checkpoints and key solutions. These are physical? Lifeline? Where is it? Like what? All the problems of flat throwing motion and quasi-flat throwing motion can be solved well by grasping two vector triangles? ; ? The key to all circular motions is to find the source of centripetal force? ; ? There are two main ways to solve all gravity problems? ; ? All the basic knowledge in constant circuits can be turned into U-I images? ; ? The basis of all mechanical experiments is the paper tape problem? ; ? There are only two key points in the paper tape problem: how to find the acceleration and speed of a certain point? ; ? The key of electrical experiment lies in two major problems: circuit selection (voltage divider and current limiter) and equipment selection? Wait a minute.
6. development? Have a good attitude? , overcome? Bad mentality? .
In the process of solving physical problems, there are often bad thinking patterns that affect us. These are all things that we should strive to overcome. And more importantly, develop a good attitude! A good attitude means: think of what you see! Like, see? Inertia is just thinking? Quality? ; Do you see it? Speed? Just thinking? Actual speed? ; Do you see it? Friction? Firstly, analyze whether it is static friction or sliding friction; Do you see it? Join hands? Just thinking? Acceleration? ; Do you see it? Energy change? Just think of all kinds of correspondence? Functional relationship? Wait a minute.
Junior two students learn physics methods well. 1. Correct learning attitude.
First of all, analyze a common question raised by the above students, that is, why can you understand in class and can't do it after class? As a science teacher, I have such personal feelings: for example, reading a literary work, the description of natural scenery and the description of people's psychological activities in the article are amazing, and I know it is, but if I have to start writing, I may not be able to write others' level. There is absolutely no problem listening to others and reading other people's articles, but it is not so easy to write them yourself and become your own things. Another example is what a child would say. If he wants to write it, he must go through repeated writing exercises to get there. Therefore, if we want to change from understanding to doing, we should practice more on the basis of understanding, so as to master the laws and mysteries and truly become our own things, which is exactly where we should study physics in senior high school hard.
If you want to learn physics well, the first thing is to study hard, that is, to dare to bear 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 will gain if you pay. 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 go far beyond others is not so much genius as his indomitable spirit of concentrating on his studies and not giving up until he reaches his goal. -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) how to study hard, what specific requirements to meet in the learning process, and what problems to pay attention to. Let's analyze it in several levels.
Second, we should pay attention to eight links in learning: making plans? Preview before class? Concentrate in class? Review in time? Working independently? Solve the problem? System summary? Extracurricular study. The most important thing here is: concentrate in class? Review in time? Working independently? Solve the problem? Systematic summary, these five links. In the above eight links, there are many learning methods. The following are some specific learning methods aiming at the characteristics of physics and how to learn physics well.
(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; When the acceleration is zero, the speed is the maximum; 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. You should sort out your notes after class, on the one hand, for digestion, and on the other hand, for supplementary 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 say is a good problem book. Hard-won notebooks should be numbered, studied later and kept for life.
(6) learning materials.
Learning materials should be well preserved, classified and marked. The classification of learning materials includes exercises, papers, experimental reports and so on. Marking refers to, for example, marking exercises. General questions are not marked. Good questions, valuable questions and error-prone questions are marked differently for future reading. Marking can save a lot of time.
(7) time.
Time is precious. Without time, there is no time to do anything, so we should pay attention to making full use of time, which is a very superb art, for example, we can save time by remembering learning methods. Before going to bed, waiting for the bus, walking on the road, etc. We can recall the lessons of the day section by section, so that we can learn them again and again and achieve the goal of strengthening. Some physics problems are more difficult, and some problems may be solved on foot. People who study physics often have several problems in their minds that they can't do and won't forget. I don't know when they will make a breakthrough and find the answer to the question.
(8) learn from others.
We should learn from others, from our classmates, from people around us and see how others learn. We should always have academic exchanges with them, teach each other, learn from each other and improve together. We must never be self-righteous. Cann't be conservative Tell others if you have a good method, so that others will tell you that you have a good method. You should have some good friends in your study.
(9) Knowledge structure.
We should attach importance to the knowledge structure, master it systematically, and systematize scattered knowledge. From the whole knowledge structure of physics to the knowledge structure of mechanics, even to chapters, such as the knowledge structure of statics and so on.
(10) Mathematics.
The calculation of physics depends on mathematics, which is too important for learning physics. Physics is difficult to do without mathematics as a calculation tool. In the physics department of the university, mathematics and physics are equally important. To learn mathematics well, we must make good use of this powerful tool.
(1 1) Sports activities.
Healthy body is the guarantee of good study, and vigorous energy is the guarantee of high efficiency in study. You should always take part in sports activities, know one or two kinds of exercise methods, take part in sports activities all your life, and do sports activities continuously. Just because you are interested in fishing for three days and drying the net for two days, it will not do much good to your health. Consciously exercise. To ensure adequate sleep, it is not advisable to increase study time by reducing sleep time. You can't get a little good grades at the expense of overdraft health. You can't talk about the so-called sprint and struggle easily, but you should also pay attention to the regularity in your study, that is to say, you should always work hard and don't engage in surprise attacks.
Third, pay attention to the cultivation of self-study ability.
Memory: In the study of high school physics, we should memorize the basic concepts, laws and some basic conclusions, which is what we often call the most basic knowledge. Students often ignore the memory of these basic concepts and think that learning physics does not need to memorize these literal things. As a result, few students, even those in cram schools, can accurately state their physical concepts in the review of senior three. I can't absolutely say that the incompleteness of physical concepts has a great influence on your study in a certain exam or a certain stage, but I can definitely say that your understanding of physical problems has an inherent adverse effect on the formation of your knowledge of the whole physical system. You can't tell which question in an exam will lose points because of your inaccurate concept. Therefore, learning Chinese requires memorizing famous sayings and epigrams, learning mathematics requires memorizing basic formulas, and learning physics also requires memorizing basic concepts and laws. This is the first premise and the most basic requirement to learn physics well. Without this step, the following study is impossible.
Accumulation: it is the work after memory in the process of learning physics. On the basis of memory, we constantly collect a lot of information about physics knowledge from textbooks and reference materials, some of which come from a topic, some from an illustration of a topic, and some may come from a short reading material. In the process of collecting and sorting out, we should be good at analyzing and classifying different knowledge points, and find out similarities and differences in the process of sorting out, so as to facilitate memory. The process of accumulation is a process of struggle between memory and forgetting. However, it is necessary to make knowledge more comprehensive and systematic through repeated memory, and the relationship between formulas, theorems and laws is closer, so as to achieve the purpose of accumulation. Never repeat your homework like a bear breaking a stick, rote it and think nothing. The result will only be more memories than forgetfulness.
Synthesis: Physical knowledge is divided into chapters and sections, and the contents that can be required in the physical examination outline are also one by one. They are both interrelated and different. Therefore, in the process of physics learning, we should constantly carry out small synthesis, and wait until the third grade knowledge is learned before systematically synthesizing. This process requires students' ability, and chapters are interrelated, and different chapters can be compared with each other, so that the knowledge before and after can be truly integrated, so as to gradually find the connection of knowledge from synthesis and find the interest in learning physics knowledge.
Improvement: through the memory and accumulation of previous knowledge and careful synthesis, the ability to solve problems can be improved. The so-called ability improvement, to put it bluntly, is to improve the ability to solve and analyze problems. For a topic, we should first look at what the problem is-mechanics, heat, electromagnetism, optics or atomic physics, and then make clear the research object, combine the conditions given in the topic, apply relevant physical concepts and laws, and also use some physical first-and second-level conclusions to get a smooth result. It is conceivable that if the basic concepts of physics are not clear, the given conditions or implied conditions in the questions can not be seen, or the formula used in solving problems is wrong or the primary and secondary conclusions should be used, but the original formula is used, the speed and correct rate of solving problems will be affected, and getting high marks in the exam will become empty talk. Improvement is first of all proficient in solving problems, then flexible in solving problems, and finally innovative in solving problems. This includes multiple solutions of the same problem, and the simplest method can be selected from the multiple solutions; It also includes multiple solutions to one problem and successful solutions to multiple similar problems. Really reach the level of dexterity and ease of use.