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Junior high school physics is relatively simple, and the knowledge is not so scattered, and science and engineering are more like literature and history. As long as you can memorize by rote and memorize those fixed knowledge, you can get a high score. Grade 9 chemistry, for example, is more like a memorization course.
The depth of junior high school physical science research is relatively limited, and there are many interactive and advanced studies, structural mechanics. Basically, it is very easy to imagine by logical thinking, and the relative is easy to understand. There are all kinds of calculation methods, not much, the puzzles are not complicated, and they are more like simple math application problems in mathematics.
The physical relativity of ordinary high schools is explored more deeply, and there are many levels to consider, and the calculation also needs to be complicated. Which Mocha force cohesion these, I was still in the first half of the first year of high school can make do with it, and I basically can't understand it in the next period. After that, he resolutely switched to literature and history, and according to his classmates who studied science and engineering, it was difficult to study physics and microorganisms in the second year of high school.
I don't have good thinking skills, and I don't think my brain is enough when I go to science. You can't think deeply, and concentration is useless. For a number of reasons, my own high school science was a mess.
In short, I was very good at physics in junior high school, but in high school, physics got worse and worse, organic chemistry was not so good, and my thinking pattern couldn't keep up. I am very good in literature and history, and I am in my 80s in primary school, 80 in middle school, 80 in ordinary high school, and more than 120 in the college entrance examination 150 points. But in physics, there are more than 90 in middle school and more than 60 in ordinary high school, all of which are 100-point system.
I chose physical geography for the college entrance examination, but I didn't see physical geography, I returned to the Department of History, and the gods of physical geography in our class didn't read physical geography, and I didn't read physical geography with a standard score of 800 or a few points, because of the low score in English and language, and poor physical geography, I only took more than 400 points to read physical geography, and now I will feel strange, that one of the better physical geography is really powerful, but unfortunately there is no opportunity to give full play, and the three Ke cards died. I digress, not much more. By the way, I also scored more than 700 points in the geography college entrance examination, which is useless.
Back then, it was 3 x comprehensive, and the three subjects were brushed down first, and no matter how many subjects were selected, it was useless to draw three lines.
Physics teaching is more focused on defining and understanding junior high school physics, which is more like a primary school application problem based on the basic laws of physics. I was very tired of entering physics in junior high school, but when I came to high school, I was very unsuitable for mechanical analysis (which is also the premise of all physics), and I was no exception. After about a month, I found the 'little trick', and became an excellent physics student in the class, until I graduated from junior high school, and even in college, I also looked at general physics by myself, and basically tested it in front of the class without attending classes, thanks to the understanding of physics teaching methods in ordinary high schools (only for non-physics majors).
Physics teaching is more focused on defining and understanding, rather than relying on problem-solving. Every time you make a mistake, you should analyze the mistakes in your understanding of the laws of physics, grasp the basic but core stress analysis, and most of the difficulties will be solved. The basic skills are all cultivated in the first year of high school.
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The child was good at physics in junior high school, but suddenly deteriorated in high school, maybe because the rebellious period has arrived, or it may be that the subject is too difficult.
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It may be because the child can't keep up with the teacher's rhythm, so the grade drops, which is also related to the difficulty of the question.
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Junior high school physics is relatively simple and traditional.
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Many children are very good at physics when they are in junior high school, but they become very poor in high school, because the physics in junior high school is all about some simple skins, and the questions are more difficult and there are many knowledge points in high school.
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First of all, show understanding of your situation, and agree that high school physics is difficult to learn. But you said that your head is bald and upset when you do the problems in junior high school, I think you haven't grasped the skills of learning physics. In this part of electricity, first of all, we must learn to look at the circuit diagram, identify series and parallel, open and short circuits, know that the series circuit is broken and all broken, and the parallel circuit is short and all short, know that the ammeter is a wire that can be read, and the voltmeter is equivalent to being disconnected, and know that the series circuit is equal current and voltage divider, and the parallel circuit is equal voltage shunt.
Haha, the above requirements include skills, focus on understanding when doing questions, and do mastery rather than many.
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To be honest, junior high school physics is not difficult, as long as you work hard, you can generally learn it well if you want to, after all, junior high school physics belongs to basic education, and the courses in the compulsory education stage are not difficult.
In physics learning here, you need to master some methods and skills, instead of trying to do more questions there, and if you do more questions, you need to summarize more by yourself.
The main electricity is more difficult, so if you think of electricity as water, water flow and current, water pressure and voltage, you may be easier to learn this visual understanding.
In life, if the water pressure in the water pipe is large, then once the water pipe is opened, the water flow will be large, which also shows the corresponding relationship between the current and the voltage, and the larger the voltage, the greater the current. However, in physics, he needs some control variables, and if you want to understand this sentence correctly, it should be that under the condition that the resistance of the conductor is constant, the condition for the current through the conductor to be large is that the voltage at both ends of the conductor is large.
If you believe it, this sentence can also be changed to when the voltage at both ends of the conductor is the same, if the resistance of the conductor is larger, that is, the greater the obstruction to the current, the current of the conductor will be smaller.
Putting these two sentences together is Ohm's law.
So Ohm's law can be easily understood like this, and when you understand it, it is quite quick to use Ohm's law to solve problems.
In the middle of the day, the three physical quantities of current, voltage, and resistance are often found with each other. There are only three physical quantities in an equation, and if you know two physical quantities, you must be able to find the third physical quantity.
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It's difficult in any subject As the so-called world is not difficult, I'm afraid of people who have a heart As long as you are willing to study and work hard, you can't learn Everyone depends on hard work.
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First, there is a three-minute silence for you.
Personally, I am a person who has walked the path of your time at this time, so I still have a little feeling about this.
The only thing to remind you is that it is useful to study physics, otherwise you won't know what to do when you see the electric spark dancing while smelling the gas.
Even though I have studied physics until now, I only think that if I encounter that kind of situation, I will only be doomed.
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Science classes are not difficult to learn as long as you master the laws of good luck, and if you don't have a good foundation, go to the basics. Once you have laid a good foundation, it will not be difficult to go down to school, and you will be able to keep up.
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Physics in junior high school is already a basic foundation of the basics, and the basics of learning are common sense in life, so no matter what, you still have to study it well or take a training class, after all, high school physics has become much more difficult for a long time.
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Understand it first, then do more, think more, and then do some things for the high school entrance examination, and it's OK.
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In fact, you don't have the right problem-solving skills and methods, and physics is not as difficult as you think.
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Agreed, I agreed, physics is too difficult, I have collapsed, and every time I do a problem, the teacher will turn around and look at it
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