What should I focus on in the third year of high school physics review?

Memorize more formulas, understand the concept of physical quantities, find some topics that you missed before, and write them again when you have the time to understand them, and if you can be clear about every step, you will probably be fine.

1. Efficient review, we must learn to sort out our own learning situation, based on textbooks, combined with our own notes, test papers, weak links, existing problems, etc., reasonably allocate time, and target and specific to overcome and implement little by little. If you don't grasp the content well, spend more time, and when you review, you should be systematic, don't go east and west, and end up reviewing nothing.

2. You can learn to master the ability of speed reading and memorization, and improve the efficiency of learning and review. Speed reading and memorization is an efficient method of reading and learning and revising with direct reflection of the eyes and brain. For the practice of speed reading memory, see "Elite Special Whole Brain Speed Reading Memory Training", practice with software, more than an hour a day, a month's time, you can double the reading speed, memory, comprehension, etc., and finally improve the efficiency of learning and review, and achieve good results.

If your reading and learning efficiency is low, you can practice it well.

3. Learn to integrate knowledge points. Classify the information you need to learn and the knowledge you need to master, and make it into a mind map or knowledge point card, which will make your brain and thinking clear and easy to remember, review, and master. At the same time, learn to connect new knowledge with what you have already learned, and constantly integrate and improve your knowledge system.

This promotes understanding and strengthens memory.

4. When doing problems, you should learn to reflect, classify, and sort out the corresponding solution ideas. When you encounter the wrong questions (carelessly do it wrong, you can't do it), it is best to collect these wrong questions, and each subject has an independent set of mistakes (the set of mistakes should be classified), and when we review before the exam, they are the key review objects to ensure that there are no more mistakes and points on the same questions.

The study of the third year of high school is intense, and the time is limited, so how to complete the intense physics review in an effective time? This has become a difficult problem faced by the majority of high school physics teachers who are fighting on the front line. Looking at the physics questions of the college entrance examination in recent years, they are generally presented"Shallow, broad and new"Therefore, in the review of high school physics, teachers should grasp the trend of the proposition of the middle school physics college entrance examination, so that students can thoroughly understand the teaching materials and lay a good foundation, so as to comprehensively and systematically improve students' physical literacy, and remember to blindly expand the knowledge points.

1 The directional movement of the charge forms an electric current (the direction of the directional movement of free electrons in a metallic conductor is opposite to the direction of the current), and the directional movement of the positive charge is specified as the direction of the current.

2 The ammeter cannot be directly connected to the power supply.

3 Voltage is the cause of the formation of current, the safety voltage should not be higher than 36V, and the home circuit voltage should be 220V.

4 The resistance of a metal conductor increases with temperature (the higher the temperature of the glass, the smaller the resistance).

5 An object that can conduct electricity is a conductor, and an object that cannot conduct electricity is an insulator (false, "easy", "not easy").

6 Under certain conditions, conductors and insulators can be converted into each other.

1. In the process of brushing questions, we must pay attention to the fact that there are not many questions, but they are fine.

The practice questions do not need to be too much, seriously do a book of exercises can be fine, the rest can be used as a snack other than the staple food, select part of the exercises to do, what I mean to do the topic, is to do not only know what it is, but also to know why it is, so that you can stand in the perspective of the questioner to see what knowledge points are examined in this topic, how these knowledge points are connected, and then you will know how to start when you encounter such problems, and it is easier to start from the **, which is the real way to do the problem.

2. Pay attention to the accumulation of wrong questions.

Students who have spare time can also consider making a separate physics problem book or making a whole set of science and error problem books, physics is really important to brush up on the subject of more questions, practice makes perfect is the eternal truth, so don't just think about memorizing the formula, the key is to use more of these things you have learned to solve problems, and accumulate ideas and skills for solving problems in actual combat, which I believe everyone understands.

3. Summarize.

The most important thing in the first round of review of physics is, of course, to go through all the knowledge points learned in high school with the teacher in a solid manner, from some basic concepts, theorems, to kinematics, mechanics, momentum, energy, electromagnetism formulas, to the derivation of some common formulas, as well as some common thinking skills when doing problems, etc., can be slowly summarized in the first round of review.

4. Choose the right method.

We need to pay special attention to the high.

The first and second stages of the application of formulas and theorems that we ignore, because later you will find that the same two methods can be used to solve the problem, but at this time, you often don't know when to use what formula, such as a problem that can be solved by the kinetic formula and the momentum energy point of view, taking the appropriate method will get twice the result with half the effort, and the other method may use a page of papyrus paper to calculate the result, at this time it is very important to choose the most appropriate ladder method.

5. Pay attention to the ductility of the basic formula.

Many can be directly memorized by derivation, at this time we had better write it down, such as the chapter of gravitation, the basic formula is a law of gravitation, but combined with kinematic formulas, we can deduce the secondary formulas that directly calculate the mass of celestial bodies, density, etc., although these secondary formulas can be temporarily deduced by themselves during the exam, but we spend a little time to write them down and are more useful, which can greatly save time to do questions.

Physics belongs to the sciences, but in the process of learning, it needs to be treated with the learning methods of the liberal arts. That is to say, whether it is physics or chemistry, we need more knowledge points to memorize, and secondly, we need to think about problems, and we also need to have a certain logical thinking ability and reasoning ability.

In addition to memorization, we must also learn to think, learn to learn, find a breakthrough point when doing each question, or keep up with the teacher's rhythm when the teacher is lecturing, and master our own learning methods, that is to say, when the teacher lectures, we must not only understand the questions, but also master the teacher's methods in the process of learning. At that time, one of the important reasons why I felt that I was better in science was that when I was doing the questions, I would talk to myself in the teacher's tone, that is, I would do the process while talking to myself. Well, this question is more impressive, and some breakthroughs that are easy to miss will be obvious.

Usually, when revising, start with the basic questions and try not to lose points for these basic questions. If you have spare energy, increase the difficulty, do intermediate questions, and strive for points. I won't give up on questions that are too difficult, and it would be better if I could get a score or two on the difficult questions.

Organize and classify the knowledge points (mastery, remember but not master, memory disorder, do not remember), and then arrange study and practice time one by one, and study in a targeted manner! Don't panic, keep a clear head, follow the teacher's review plan to take lecture notes, practice after class, summarize knowledge points, etc., understand the basics and master them! It is necessary to take it seriously, do a good job of making mistakes, and analyze the knowledge points and reasons for mistakes.

High school physics is really not difficult to learn, because the knowledge points of high school physics are closely connected, and the modules are neat and unscattered. Just grasp the main knowledge and string them together.

Physics is a matter of thinking. In the science comprehensive exam in the third year of high school, the score of physics is very large, and of course there are many questions. When high school students do physics problems, whether they are multiple-choice questions or big questions, they must first have the idea of solving the problem, and then they can solve the problem.

When doing a big physics problem, you must have a clear idea, and then write down each step and pay attention to the specifications.

As long as you have time, you must look at your own mistakes, remember the physical formula and master its principles, summarize the ideas for solving the problem, and if the conditions allow, you can do some to deepen your impression.

Master the relevant basic knowledge, memorize some theorem formulas, and do more relevant topics, establish a complete knowledge structure, and do a series of integrations of related knowledge.

You must brush up on the questions more, you must understand the knowledge points in the textbook, you must practice more, who will draw inferences from one another, and you must conduct more than two rounds of review.

At this time, you should review more professional knowledge points, and you should read more mistakes that you didn't know before, and memorize especially important knowledge points.

The purpose of revision is to make the knowledge structure clear, organized, and systematic. Many students feel that there is nothing to learn in the review stage, but the results of the exam are not satisfactory, and the teachers of Chengdu Meibo have summarized the six key points in the review of physics in the third year of high school for students' discretion.

1. Focus on eliminating the "blind spots" of knowledge

According to the syllabus, all the knowledge points that are not clear when learning the new course are clarified, and the ones that have been clarified are further proficient. It includes physical concepts, theorems, laws, all formulas, figuring out their ins and outs, being able to derive them. Avoid not being able to grasp the true intention of the question when it comes to basic knowledge, or not being able to correctly distinguish and analyze multiple-choice questions, using the wrong formula for calculation questions, Zhang Guan, Li Dai, etc.

2. Repeat proficiency in basic question types.

Every basic question type and every basic model must be re-mastered, and the "three nos" must be achieved, that is, not afraid of trouble, not afraid of repetition, and never tired of it. For example:

Chase problems, conveyor belt problems, plate models, dynamic electricity models, induced electricity models, etc., are sorted out one by one, and never omitted.

3. Clarify the three main lines of mechanics.

Newton's laws – the cornerstone of the whole mechanics. It establishes the most essential relationship between motion and force, and what force will do what kind of motion it is. If we understand this problem, we will understand the fundamentals of mechanics.

Energy Perspective - Mainly related to the kinetic energy theorem, the law of conservation of energy (including the law of conservation of mechanical energy). The energy perspective is more "high-end" than Newton's laws, and it can solve some problems that Newton's laws cannot solve in high school (such as variable rate curve motion) or more easily solve some problems that Newton's laws are not easy to solve (such as complex multi-process problems).

Momentum viewpoint – including the momentum theorem, the law of conservation of momentum. Pay attention to distinguish between the momentum theorem and the kinetic energy theorem, as well as the problems that each is good at solving; Pay attention to distinguishing between the law of conservation of energy and the law of conservation of momentum, and the problems that each of them excels at.

Clarifying these three clues of mechanics also solves half of the problem of electricity.

4. Textbooks and syllabuses are "cheats".

In the process of revision, you should not depart from the textbook, and the textbook should be read carefully and intensively. This includes the devices in the textbook, the situation diagrams, and the practice questions after class. Elective 3-3 (Thermal), Elective 3-4 (Vibration, Waves, Optics), and Elective 3-5 Modern Physics (Wave-particle duality, atomic nucleus) should be read, sorted out, and memorized repeatedly.

5. It is necessary to conquer the "experimental fortress".

Experimentation is not only the focus, but also the difficulty. In the review, all experiments should start from the purpose of the experiment, know the ins and outs of the experimental design, know why it is designed, and what changes can be made. Don't memorize by rote.

Only in this way can we respond to "change" in the exam.

6. Regular training is a "whetstone".

Immediate timed training after review can not only effectively check the effect of review so as to make up for it immediately, but also train the speed of problem solving and improve proficiency, which must be insisted on for a long time.

A round of comprehensive review to consolidate the foundation of a single subject.

1.Comprehensively review and lay a solid foundation.

Science synthesis focuses on the proposition of ability and focuses on the synthesis within the discipline. In the third year of high school, we should try to implement each knowledge point and strengthen the double base of the discipline. Due to the tight schedule, teachers lead students to review and focus on the analysis of concepts and theories, and implement each knowledge point on the basis of focusing on core and backbone knowledge.

First of all, it is necessary to grasp the foundation, focus teaching on a deep understanding of basic phenomena, basic concepts, and basic laws, and reveal the essential characteristics of phenomena, the accurate meaning of physical concepts, and the similarities and similarities of physical laws through comparison, analogy, and other methods. For the concept of physics, we must guide students to figure out what phenomenon it is derived from, what phenomenon it is used to describe, how it is defined, what factors determine it, and which physical quantities are related to what they have learned (including quantitative relations and causal relationships), and so on. For physical laws, it is necessary not only for students to grasp the first and applicable conditions of the laws, but also for students to grasp the quantitative relationship and causal relationship between the physical quantities reflected in the laws.

It is necessary to guide students to grasp the intrinsic connection between knowledge while clarifying the ins and outs of knowledge, form a clear knowledge network in their minds in a timely manner, and be able to flexibly use the knowledge they have learned to solve practical problems.

2.Appropriately reduce the difficulty and pay attention to subject ability.

Shift the focus of knowledge to horizontal linkages. At present, there is still a situation of seeking difficulties and seeking perfection and seeking more quickly, which is a waste of time and energy; There are problems of substitution by teachers, a single mode of lecture and exercise, and low-level repetitive exercises. To solve these problems, the first thing is to reduce the difficulty of the exercises, control them around the medium difficulty, and strengthen the horizontal connection of knowledge within the discipline.

Medium-difficulty training should pay attention to correctness, proficiency and standardization, not only to prevent high-difficulty training, but also to prevent low-level repetitive exercises, so when reviewing, it is necessary to pay attention to: choose some practice questions with your weak points for selective practice and targeted correction; Regularly conduct thematic summaries and establish file files for mistakes. Instruct students, learn to review, and improve their abilities.

Students should be able to weave a knowledge network independently, summarize by themselves, strengthen the use of what they have learned to solve unlearned problems, and then further improve to use new knowledge to solve new problems that they have not encountered. There should be learning methods such as summarizing, retrieval, transferring, deductive, reasoning, and induction, and turning knowledge into ability.

3.Expand your knowledge by connecting it with reality.

Teachers need to keep abreast of the new trends in the development of science and technology, and pay attention to physics and major events closely related to physics. Teachers should closely combine these relevant major events, compile relevant exercises, provide students with exercises with novel backgrounds, compile knowledge related to production, life, and science and technology into physics exercises, and train students to learn to read background materials and learn how to handle and use background materials.