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For junior high school physics, there are the following points:
1. The necessary formulas must be memorized, and the criteria for memorization are: 1. Be able to write formulas silently; 2. Know what each symbol represents; 3. Know the unit of each symbol; 4. The formula will be transformed.
2. Understand the ten key points, and the standards for understanding are approximately: 1. Those who have formulas must be familiar with them; 2. If there is a formula, you should memorize it; 3. Know the process, principle and research methods of the experiment.
3. Understand the knowledge framework diagram of the five major topics (acoustics, optics, thermals, mechanics, and electricity). The criteria for understanding are: 1. Roughly grasp the inclusion relationship of each knowledge point; 2. Be able to make divergent associations with a certain knowledge (such as:
Ohm's Law. The content of its laws, its formulas, its scope of use, the relationship between what it is studied, what the research methods are, etc.).
Fourth, do the question. At this stage, the main thing is to check and fill in the gaps, see if you have not mastered enough knowledge in that area, and remember the mistakes, so that you will not make the same mistakes in the future.
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Think more, do more exercises, and summarize more, it should be the universal formula for learning every lesson, and physics is no exception! In fact, physics is very easy to learn, physics is all derived from life, and when learning, it will help deepen understanding and memory by connecting with examples from life. If you encounter problems in life, you can also think about what kind of physics knowledge or principles you can use to explain, so that physics will become easy to learn, and I feel that learning physics is a very interesting thing!
Hope it helps!
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Grasp the basics, first understand the knowledge points in the book, and of course cooperate with the exercises.
After that, I will do some comprehensive questions, and that's basically it.
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Memorize formulas, go through the book, memorize concepts, buy a shorthand manual, pick the question when you do it, don't ask anyone, with the help of books and materials, rely on yourself until you know, remember the experiments in the book, if you have perseverance and are not disturbed by the outside world, I guarantee that you will be no less than those good students in one day.
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To summarize the basic model, there are not many, and the questions are all the same.
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Always summarize the ideas and methods of the problems you have done, and often summarize and classify the common uses of theorems and definitions in textbooks.
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Classmate, is it a little late for you to ask this question now But it's going to be the college entrance examination soon, it's useless to think about this, just do what you can do, play your own level, I hope you get good results in the exam! ~
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Physics is actually quite simple, as long as you remember those laws!
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Learn more and study hard.
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Clarify the basic concepts and familiarize yourself with where they come from and how they relate to each other. It is necessary to do some questions independently, with quality and quantity. There should be a certain number of questions, not too many, not too few, but also a certain quality, that is, a certain degree of difficulty.
Anyone who learns mathematics, physics and chemistry will not be able to learn well without going through this level. Solving problems independently, sometimes slowly, sometimes detours, sometimes even unable to solve them, but these are normal and the only way for any beginner to succeed. It is necessary to be clear about the physical process, and there is inevitably a hidden danger of solving the problem if the physical process is not clear.
Regardless of the difficulty of the topic, you should draw as much as possible, some sketches are sufficient, and some should be precise to show the geometric relationship. Drawing can transform abstract thinking into figurative thinking and grasp physical processes more precisely. With graphs, state analysis is fixed, dead, and intermittent, while dynamic analysis is alive and continuous.
Study materials should be well preserved, classified, and marked. The study materials are categorized into practice questions, test papers, lab reports, and more. Marking means, for example, for practice questions, that the general questions are not marked, and the good questions, valuable questions, and error-prone questions are marked differently for future reading, and marking can save a lot of time.
It is necessary to attach importance to the knowledge structure and systematically grasp the knowledge structure, so that the scattered knowledge can be systematized. It is as large as the knowledge structure of the whole physics, as small as the knowledge structure of mechanics, and even down to the chapters, such as the knowledge structure of statics, and so on.
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If you don't have a good foundation in physics, the first thing you have to do is learn to give up. If you lose, you will gain. When you make it to the last multiple-choice question, it's important to give up.
Students who do not have a good foundation in physics will generally not get any results when they do the last question. This is a little bit of a look, as long as you feel that there is no idea, jump right away, do not hesitate. In the end, you can guess that it depends entirely on your character.
As for the experiment, I can't say anything about it. When I don't get a perfect score, I just deduct points from the experiment. If the test is a textbook experiment, then there is no problem.
But if it's not a textbook experiment, many times when answering some questions, you will have to deduct a few points. This requires your understanding of the topic, which is a kind of ability that needs to be cultivated slowly and will not improve significantly for a while. I think this is the only way to minimize the error in the answer.
As for the big questions, you have to make sure that you get a perfect score for the first question. Generally, the first question is very basic, you have to be meticulous, not fast, and strive to get a full score. Otherwise, in the end, it will become a simple question, and the problem will not be done.
At that time, you can only be confused with physics. In the second question, you should try to get as much as possible. As for the finale, you can do the first question, and you can take a look at the rest.
Then, be sure to write some common formulas related to the question on the second and third questions. This is also a way to cheat points, don't leave it blank. As long as there is something in the college entrance examination, it is generally given a 2 point, which is very cost-effective.
For specific question types, this needs to be accumulated. In a word, do more questions. I won't do it, but I always feel it after doing it a few times.
In short, the most important thing for you is to give up. Leave time for the basic questions that you will do, so that you will not be too far behind others in physics.
Hope it helps.
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Bad grades, copying people, copying books.
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Buy a good reference book, practice simultaneously with the textbook, understand the knowledge points, understand the question types, and estimate that it will not be difficult to score well in the exam!
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1. Master the basics.
Imprint the most basic and important knowledge points in the textbook into your mind. Master the application of various formulas.
For example, Newton's second law can be solved in four steps.
It must first draw a diagram for force analysis, analyze the composition of the resultant force, and analyze the dynamic force and resistance (friction force, gravity component, etc.).
Combined with Newton's second law f=ma, the specific situation is listed as a formula.
In this way, the system is organized, the basic knowledge is solid, and the questions will be easy.
2. Pay attention to accumulation and learn to think.
Physics knowledge is very detailed and the methods are flexible, so you need to learn to draw inferences from one case and integrate them. The corresponding method is to prepare a notebook of mistakes, and record the typical questions that you have done wrong and will not know, so that you can check and fill in the gaps in the future. Think more, and you will get twice the result with half the effort.
3. Reflection. You have to analyze the reasons for losing marks on the questions and avoid carelessness. Careless loss of good reflection,. If you can't get the wrong questions, it's best to find the corresponding place in the textbook again, deepen your impression, and ask your classmates. The teacher is always changing.
There are only a few aspects of physics formulas, and there are only a few aspects of the test, do more exercises, master the conditions and methods applicable to the definition of each formula, and you will be confident in doing questions in the future.
In short, don't be discouraged, think calmly, have a solid grasp of the basics, and touch on the analogy.
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To build your own knowledge structure, Nobel Prize winner Tsung-Dao Lee said that the test is about memorization and arithmetic skills.
Pay attention to the extension and connotation of concepts to deepen understanding and memory.
Pay more attention to the connection between life and physics, and now the topic is very close to life.
Pay attention to typical questions, clarify the analysis ideas, strive to solve multiple solutions to one question, reflect after the question, and strive to do one question and one type of question.
Be good at categorizing topics. Such as buoyancy, which can be summarized into the following categories, etc.
Task Type 1: Determine whether an object is buoyant.
The key is to see if the lower surface of the object is under pressure from the upward liquid.
Task Type 2: Analysis and comparison of the amount of buoyancy exerted on the same object.
Idea: Closely follow the liquid and V row analysis in the buoyancy formula, or discuss it in combination with the floating and sinking conditions.
Task Type 3: Analysis and comparison of the amount of buoyancy applied to different objects.
Question type 4: How to judge the rise and fall of the liquid level (such questions generally do not overflow liquid)...
Establish your own error book, record the reasons for the mistakes and modifications, and take out the review again before the exam, and smart people don't fall in the same place twice.
Be careful not to ask if you don't understand, and don't owe money.
There is also a process of physical improvement, we must have perseverance and confidence, we must rise one by one, and do not expect to ascend to the sky in one step!
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1. Efficient learning and 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., reasonable allocation of time, targeted 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.
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As a high school physics is not good but later learned the college entrance examination, I summarized a more important point, learning physics, including other science and engineering, do not eye master low, the topic must be calculated is their own, secondly, the basic concepts and formulas must be familiar, this familiar is not the meaning of memorization, but through training to be flexible mastery, in order to use comprehensively, the specific implementation is to listen well in class, do more questions, but also to ensure that every question is done in the end, the most important thing, learn to summarize mistakes, There could have been mistakes.
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The principles and formulas should be memorized and understood thoroughly, and then do more questions.
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Study hard, what else can you do, when you can write all the questions in all the exercise books, you will be awesome.
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Learn theory well, do more classic questions, all of them are templates, and they are all questions in those ways.
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Do more question types, junior high school physics is mainly mechanics and electricity, for the analysis of each question type of classic examples, it should not be a problem.
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