Urgent!!! How to learn mathematics, physics and chemistry in the first year of high school?

Don't worry, I'm also a freshman in high school, I don't know how you did in the entrance exam, anyway, I didn't get into a good class, it's all bad living habits and methods, classmate, I was in the same hurry as you in the first semester of my freshman year of high school, and I really wanted to do well in the exam so that I could get into a good class, but it backfired Not only did I not study well, but I also studied very tired, and I started to adjust when I was in high school, and now the more I learn, the more motivated I became, and the teacher told us that I didn't let you study well in the first year of high school, and it doesn't matter if the science in the first year of high school is not very good, the important thing is to get a high score It's a bit contradictory, but it's not a contradiction The first year of high school is the beginning of high school, is the time to find a suitable learning method for yourself, so the knowledge is relatively not too difficult, the questions are not difficult, it is easy to learn well, as long as there is a good method, well, enter the main topic, mathematics is not difficult to learn, it depends on whether you are interested in the method or not, and it is a little late to cultivate now, but the math score is very good, you first read the book, read the questions, write the questions in the book, and then do the example problems that the teacher said, and finally write a little information, and the speed and accuracy of practice must be sure to lay a solid foundation or it will be a tragedy The same is true of chemistry The difference is that the catechism knowledge points Chemistry is very messy If you ignore it, it's quite slow to do the questions, and it's still wrong, and you can try to think of the knowledge framework in your heart, think of some example questions, methods, and things to pay attention to in the knowledge points, which you had better leave until you understand the textbook thoroughly and do it, otherwise it's a fantasy, not to know if you understand, to say that the simple point is to read the book first, understand, and then write the questions on the book, the classic example questions must be able to write a little information on the questions, and finally think about the knowledge framework, think of each knowledge point, think of the place you want to pay attention to, think of the example questions, think of the method, the foundation must be solid, otherwise the score is up and down, quite terrible The second year of high school liberal arts and science key class You have to work hard Don't relax and work hard for a month or two is definitely enough to improve the right to improve the science method first, diligence secondly, not to make you lazy It is to emphasize that there is a method that suits you, and a little effort is a high score Not only is it very motivating, but also not too tired You must summarize the method by yourself My method is not the best You must improve it appropriately in combination with your own situation There is also a daily exercise will relieve the pressure of studying, which is very useful I wish you success in your studies I am admitted to a good science class Ten years of hard study Once the title of the gold list is titled, there will be problems in the future, I hope we can be together**.

I am a male, and I am also in the first year of high school now, so I note that the following must be done calmly in order to achieve the effect.

My math is not too bad and not very good, in short, I am not too committed to learning this, learning mathematics well boils down to three points, one is to understand what the teacher says in class, but to be familiar with what is written in the textbook, and the third is to consolidate what I learned in a good day outside of class.

Chinese,I don't listen much in class.,I'm still interested in learning this subject.,Plus the usual amount of reading and I usually like to write something as I like.。 Learning Chinese depends on an interest and confidence, and the usual reading amount keeps up, plus the foundation, and it is not a problem to learn this subject well.

English, high school English has two big heads, one is reading, but grammar, my grammar is not very good, reading is passable, my usual way to learn English is to look at the knowledge points outside the classroom, especially in the basic training, try to fully master, and review every once in a while. Another point is to communicate more with foreigners, speak more English, the sense of language will come up, and the reading ability will also improve.

Physics, my physics is quite easy, and the method of mathematics is similar to that of mathematics. You have to learn to use the formula flexibly, and the calculation question in the general exam will not be dedicated to the dead formula.

Chemistry, solubility table, periodic table must be memorized, chemical equations should be familiar with the mind, especially some equations with particularly complex coefficients, such equations are particularly difficult to balance during the exam. There are also some details in the textbook, plus some exercises, you can learn almost everything.

Biology: This course seems difficult at first glance, but in fact, this course is not difficult, interest can support you to learn well, exercises and textbooks are the most important for this course, of course, listening to what the teacher says in class is the king.

This is simple, I am an engineering college student in the class of 09, I think mathematics, physics and chemistry, the key is to remember the question type, because the question, is not finished, as long as you can summarize and summarize, there is generally a notebook or error correction book, you think or always recommend the typical questions on it, but you still have to look at it often, because the exams are all new bottles of old wine, are only test knowledge points, you have to learn to master some very classic topics, secondly, you must have a workbook, but also often do questions, Otherwise, you don't know which ones are classics, and the ones that appear more often are classics!

Hehe, I am facing the same problem as me, I also chose science, chemistry is the liberal arts in science, as long as you know how to remember and then understand, if you want to learn well, it is best to get a set of wrong questions, excerpt some wrong questions, and read them when you have time, which is of great use to whatever you learn, and to learn mathematics well, you must first remember the formulas and then understand them, master the basic methods and ideas of doing problems, my teacher told me that in general high school, tree combination, metamorphosis, and other methods are used, and the effect is good, and I hope you also achieve good results.

Learn to generalize, and you should take corresponding notes for some types of questions.

<> set the point p to be (-1,t), and determine the linear equation of fp according to the coordinates of p and f: y=-t 2*x+t 2, then the coordinates of r point are (0,t 2).

Vector rq*vector fp=0, then there is rq fp.

The equation for the rq line is: y=2 t*x+t 2.

Coupled with the pq linear equation y=t, the coordinates of the q point are: (t 4, t).

The q point satisfies the equation: y = 4x, which is a parabolic equation.

Question 2. <>

The equation for a straight line crossing the point f is: y=kx-k.

Parallel to the equation x=y 4 of the parabola c, it is reduced to :

k x - (2k +4)x + k =0 (Equation 1) or ky -4y-4k=0 (Equation 2).

The two solutions of Equation 1 x1 and x2 are the abscissa of the two intersections A and B, and the two solutions of Equation 2 Y1 and Y2 are the ordinates of the two points A and B. (Due to the complexity of the calculation, we are prepared to change the way, and do not directly calculate the coordinates of points A and B).

According to Veda's theorem, we can see that x1+x2=-b a=(2k +4) k =2+4 k ,x1*x2=c a=1,y1+y2=4 k,y1*y2=-4

Fill in the following problem-solving process:

1：y=4x^2

2: When x=ab is perpendicular to the x-axis, the point is on the circle, and in other cases, the point is outside the circle.

The first question is very simple, so it goes without saying.

Question 2: There are three kinds of positional relations between points and circles, which are determined by the distance between the point m and the center of the circle o h and the radius of the circle r.

Let the slope of the line ABF be k, then the equation is Y=KX-K, the coordinates of the center of the circle O are (xo,yo), and the coordinates of the AB points are (x1,y1) and (x2,y2), respectively

Then xo is the midpoint of ab, so xo=(x1+x2) 2h is the distance between the point m and the center o of the circle: h=mo= (xo+1) 2+yo 2 radius r=(af+bf) 2

F is the parabolic focus and MP is the parabolic alignment. According to the nature of the parabola, the distances af and bf from points a and b to f are equal to the distances from points a and b to the quasi-line mp, respectively

af=x1+1 bf=x2+1

Therefore r=(x1+x2) 2+1 =xo+1h 2-r 2=y0 2>=0

Indicating that h is greater than or equal to r, then point m is either outside the circle or on the circle.

Listen carefully in class and practice more after class.

Mathematics: Theorems in textbooks, you can try to reason on your own. This will not only improve your proof ability, but also deepen your understanding of the formula.

There are also a lot of practice questions. Basically, after each class, you have to do the questions of the after-class exercises (excluding the teacher's homework). The improvement of mathematics scores and the mastery of mathematical methods are inseparable from the good study habits of students, so good mathematics learning habits include:

Listening, reading, **, homework Listening: should grasp the main contradictions and problems in the lecture, think synchronously with the teacher's explanation as much as possible when listening to the lecture, and take notes if necessary After each class, you should think deeply about it and summarize it, so that you can get one lesson and one lesson Reading: When reading, you should carefully scrutinize, understand and understand every concept, theorem and law, and learn together with similar reference books for example problems, learn from others, increase knowledge, and develop thinking **:

To learn to think, after the problem is solved, then explore some new methods, learn to think about the problem from different angles, and even change the conditions or conclusions to find new problems, after a period of study, you should sort out your own ideas to form your own thinking rules Homework: to review first and then homework, think first and then start writing, do a class of questions to understand a large piece, homework to be serious, writing to standardize, only in this way down-to-earth, step by step, in order to learn mathematics well In short, in the process of learning mathematics, It is necessary to realize the importance of mathematics, give full play to one's subjective initiative, pay attention to small details, develop good mathematics learning habits, and then cultivate the ability to think, analyze and solve problems, and finally learn mathematics well

In short, it is a process of accumulation, the more you know, the better you learn, so memorize more and choose your own method. Good luck with your studies!

My experience was right.

All the formulas learned in high school math textbooks are listed.

Do practice questions for all the formulas (not too many).

Proficiency in applying all formulas.

If I score 150, I should be able to score more than 130, and I am at this level.

1.Let go of your psychological baggage, and don't think arbitrarily that you haven't studied well before.

You can't learn high school chemistry, in fact, junior high school chemistry does not have a big impact on high school, you must believe it.

Psychologically, you must stand firm.

2.Do a good job of pre-studying, everything is pre-established, and what you can't see in the book is drawn with a pen, and wait until you get up.

Observe the teacher's explanation during class.

3.After class, you should review the basic knowledge section of the textbook and make your own notes, including one of your own.

Correct the set of mistakes (try to use a different color pen).

4 Doing the questions This is very important, do more questions, but don't just indulge in doing the questions, be in.

Understand what the key points of these questions are in the process of doing the questions Remember: from being able to do some questions to being able to arrive.

Category 1 Questions Because many questions are ever-changing, it is necessary to write them down.

For the very important type of question, it is the question type, not just the question Do it by touching the class next to the 5 classification If you don't understand, you must ask the teacher, whether it is the chemistry teacher, don't think this.

Some questions are simple and embarrassed to ask, it will exhaust you, you have to trust yourself and the teacher, questions.

After that, you have to think independently, don't think that you really understand, you must think, and there are points.

Write some questions from different test points, so that they are good and classy, and have clear ideas 6 Reflection Reflect on why you did something wrong and why you didn't do it, and still communicate with other students.

Chemistry Learning Experience Constantly summarize your own set in reflection 7. Believe in yourself

Okay, you can do it, the above is my previous experience in studying chemistry, I hope it will be useful to you.

Some effects, and finally I wish you a smooth exam, like a bamboo, straight to the examination room, full of brilliance

Absolute experience and the most effective method: read the textbook, I didn't do any problems in high school, it is the matching workbook to do, but my chemistry score has always been the first in the school, that is, to read books, I used to memorize the book, read, by the chemical equations, do not memorize alone, classify the back, when reading the book, it is all copied, OK, that's it, to ensure that your chemistry score is okay.

Landlord I think your situation is similar to mine, I was also a high school student and just graduated this year. I didn't study hard in my freshman year of high school, and I indulged in Internet cafes all day long. But in my junior year of high school, I also learned from the pain.

Determined to study mathematics well, I was lucky this year and scored 141 in mathematicsLet me tell you about my study plan with the landlord. First of all.

I believe that you should focus on what you are learning in class at all times, and you should not focus on your own plans and not keep up with the teacher's pace. This is the first and most important step. Secondly, landlords should not just do the information and ignore the textbooks.

There are many times when I can't start an exercise, or even can't understand it, I always open the textbook, take a closer look at the concepts in the textbook, and then redo the problem. I think the landlord should still memorize the concepts in the textbook before doing more exercises, which is also a way to get twice the result with half the effort. In the third year of high school, the school will definitely give each student a reference book for class, but I don't think just one resource book is enough for students with poor foundation to learn mathematics well.

I think the improvement of math scores also lies in practicing more, and when I was in my third year of high school, I bought myself 2 resource books to practice. I believe that with more practice, you can learn math well. Hard work pays off.

But the landlord must be selective when doing the question. When I started to do problems, I often encountered problems that I couldn't do, and as a result, I worked hard to solve these problems, wasting a lot of time and not making much progress. I later changed this method and started to focus on simple questions and skip over them when I encountered difficult problems, so that before I knew it, my foundation had also improved a lot.

Then I went back to the problems I didn't know before, and I found that it was much easier, and my grades improved a lot. In addition, there should be a few reference books suitable for themselves, and in the third year of high school, the school will definitely give each student a reference book for class, but I don't think just one reference book is not enough for students with poor foundation to learn mathematics well. I think the improvement of math scores also lies in practicing more, and when I was in my third year of high school, I bought myself 2 resource books to practice.

I believe that with more practice, you can learn math well. Hard work pays off. But the landlord must be selective when doing the question.

When I started to do problems, I often encountered problems that I couldn't do, and as a result, I worked hard to solve these problems, wasting a lot of time and not making much progress. I later changed this method and started to focus on simple questions and skip over them when I encountered difficult problems, so that before I knew it, my foundation had also improved a lot. Then I went back to the problems I didn't know before, and I found that it was much easier, and my grades improved a lot.

These are some of my observations. Keep up with the teacher in class at all times. Be sure to memorize the concepts in the textbook (this is difficult to do, but it's essential).

Have multiple reference books and practice them diligently.