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The knowledge of physics is like this, open the book clearly, close the book at a loss.
According to my experience, when you first start memorizing, you will write it down while memorizing, and after writing it a few times, try to write it silently once or twice, if you can write it, do something that has nothing to do with these formulas, and then write silently every once in a while, and then silently write it every other while, and repeat it two or three times, if you can write it out, you will probably not forget it today, and you can review these formulas the next day; If you get stuck when you write silently, then look at the book again and compare it again.
It should be noted that sometimes the same letters or symbols are used in books to represent different physical quantities, for example, g in middle school physics, sometimes means gravity, sometimes represents gravitational constant, and when encountering similar medicines, distinguish the physical meanings they represent, otherwise the more you remember, the more confused your heart will be.
It was in this way that I memorized the six formulas of our "Signals and Systems" and more than 40 similar formulas in two days, and memorized the four sets of extremely confusing formulas of "Engineering Mechanics" in one day
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I've been in a similar situation before, and some things either don't know how to read them, or I just can't remember them, and that's how I usually do them
1. Do the questions, do the questions with a dead face before the exam, the author looks at the book, and remembers it after doing it a few more times.
2. Do a question, remember the formula for the time being, and then don't look at him, think about it after an hour, keep thinking, unless you really can't think of it and then read the book, you can think as much as you want, and the process of thinking should slowly reason about this formula.
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How so. Everyone's potential is limitless. It stands to reason that with more practice, you can memorize the formula.
If there is still a problem, that is, you do not understand which chapter, you should communicate with your classmates and teachers more. There are always weak places. Something can be learned as soon as you learn it.
Others will be jealous of you.
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If there is still a week before the exam, just type the cheat sheet. If it's still a long time, let's classify memories! There is no other way.
There is also a possibility that you care too much about this exam, so your memory is not solid, and you always feel that you can't. Relax and give it a try?
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Hit the cheat sheet brothers! This is the fastest and most worry-free drop
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Understand the memory according to the actual physical scene, and don't memorize it.
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γγγIt is useless to memorize with understanding, and rote memorization.
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Take the physics exam as if it were an open book.
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All formulas are pushed, they will be pushed, and you don't have to memorize anything. For example, there are many formulas in kinematics, but it is not only difficult to memorize, but it is also difficult to figure out which one to use in the exam. What to do? Draw a V-T diagram!
All formulas of kinematics can be deduced from the V-T diagram. If you find the distance: s=vt 2 is to find the area formula of the triangle, 1 2 base times the height.
Similarly, (at 2) 2=x(displacement).
The essence is 1 2 base times high.
The landlord knows how to derive, and only needs to memorize a few of the most basic formulas that are prescribed, and many complex formulas can be introduced.
If the landlord thinks this is not good, then I have 1 way: look at the unit.
Physical operations are united, and the derivation process of formulas naturally has units. So sometimes you forget the formulas, you can start with the units and recall those formulas.
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You should memorize the formulas that you need to use when doing practice problems.
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Only by understanding can you remember better, so you have to read more books, that's the king!
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Hello, if you remember that you don't know how to do the questions yet, first of all, you have to report this situation to the teacher to see if the teacher has any good opinions.
And then there's a lot of questions, and if you do a lot of questions, you have a feeling that when you see the questions, you feel like you've done it, and then you will do it.
Let me tell you a story: I used to be in my first year of high school, and I was very good at math, and the teacher asked me to prepare for the Olympiad, and told me not to do my homework, and after a while, I found out that I would be wrong whether it was simple or rare, and the teacher found out and talked to me. In fact, you still have to do a lot of questions, and when you have a large amount of basic questions, you will find a way to solve the problems, and many of the problems are actually simple questions, and in fact, it is not good to ask questions online, or ask the teacher for advice, and hope to adopt.
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That's why you can't do the questions, three reasons, 1. You don't understand the questions, this is an ability in the physics test, reading comprehension ability. How to read a question, I won't tell you, this is your Chinese teacher's responsibility, except for reading over and over again, I can't think of any shortcuts.
2. You do too little practice, and there is really no other way to learn science things well except for doing a lot of exercises.
3. You said that you memorized every formula, did you really remember it? Rather than memorizing only the mathematical expression of each formula, it is necessary to memorize the physical process corresponding to each formula, and every physical quantity involved in the corresponding process.
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That's not called knowing the formula, it's called remembering the formula, you first go to see the derivation process of each formula, it's in the book, and immediately after you understand it, go to the corresponding practice questions at the back of each section of the book, so stick to it soon and do the exercises in the materials, in short, from shallow to deep, don't be impatient!!
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Ways to quickly memorize physical formulas:
1. Expression: be able to memorize and correctly describe the content of concepts and laws.
2. Expression: Clarify the expression formula of concepts and laws and the physical meaning of each symbol in the formula.
3. Comprehension: be able to grasp the application scope and use conditions of formulas.
4. Deformation: The formula will be correctly deformed and the meaning of the deformation will be understood.
5. Application: Use concepts and formulas to make simple judgments, reasoning and calculations.
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Don't just memorize formulas, because it's easy to make mistakes and mix up, there are two ways.
Physics novices should memorize the relevant formulas together, so that once they make a mistake, it is easy to find that if the level is too high, they can understand the formula and then be it, and after understanding, as long as they remember a few basic formulas, the rest can be pushed out by themselves.
ps: You can buy this queen male to see its unit knowledge summary, it's pretty good, you can integrate it.
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Physical formulas are not very easy to remember, I think the first thing you need to understand is the meaning of the formula, this is the key to being able to remember it!
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I think that after memorizing the formula, doing more exercises will help memorization.
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Understand the rollout process and pay attention to categorization. For example, look at the acceleration formula. a= v is the amount of change in velocity per unit of time, so divide by tAnother example is p=f sIt is the force per unit area that represents the pressure.
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Remember the original formula first.
Other formulas are derived from the original formula.
In this way, as long as you remember the original formula, you don't need to remember the other formulas, you just need to deduce other formulas from the original formula.
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The method of application comprehension can be memorized quickly.
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Just memorize a few basic formulas, no rote memorization, the focus is on the derivation process, you can derive, even if you forget the formula, you can push it out!
You can also remember the units corresponding to each physical quantity, and when you see a physical quantity, you want to use the unit to convert the formula.
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If you want to be fast, you can't reach it, and the questioner is too anxious to pursue immediate results, which is a taboo in learning physics.
Remember, it's not good to use it.
Suggestion: Carefully understand the establishment process and conditions of use of each formula, actively go through the knowledge construction process, or it will not take long to memorize these formulas, and it is difficult to forget.
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Physics formulas must not be memorized, learning physics well is to understand, not to memorize a single one, not like chemistry to memorize elements for a few days.
When it comes to exams, everyone has them, but it doesn't matter, it's just an exam, do a good job of basic work, take every question seriously, and you will find that it's actually very easy.
You can talk to your mother very seriously, explain why you want to go to the make-up class, what is the purpose of your remedial class, there is no mother who does not want her child to excel in academics, or because of the family's financial problems, the mother does not want you to go to the make-up class, but I believe that with your sincerity and determination to communicate with your mother well, she will definitely agree.
Most of this is due to nervousness before the exam. People need pressure to have more motivation, but putting too much pressure on yourself will only make you feel out of breath, unable to concentrate, and unable to relax. Therefore, at this time, it is even more necessary to give some time to adjust your mentality and pressure. >>>More
Don't be nervous, you have to know that if you can get 80 points, if you go to the test with a nervous mood, you may get 60 points. If you are calm and relaxed, 80 points. If you are full of confidence, if you are confident that you will get a perfect score, then you will not run with 90 points. >>>More
Now, of course, it's time to review well.
However, revision must be good to grasp the method, first be in a good mood, and then be efficient. >>>More