How to learn mathematics, physics and chemistry well!! 20

First of all, the foundation must be firm!! To what extent it depends on how many points the landlord wants to score. The second is to do more questions, the purpose is to practice how to comprehensively use the basic knowledge (not the sea of questions, but to understand one question and understand one question).

Third, summarize more methods, what kind of questions and what kind of methods. There are many other ways to do this, and each person has different situations. It is recommended to take a look at the experience of those who have become champions through hard work, although they can't be copied, but if they can become champions, there must be something to learn from!

Do more questions, summarize more, and the method varies from person to person.

Hardly. It depends on talent.

Personally, I think it's useless to say more.

Do more questions! Summing up experience is the truth.

Because the values of sin65 and cos25 are the same, and the values of sin20 and cos70 are the same, it can be exchanged to become sin70cos25-cos70sin25, and then with the formula, it can be written as sin(70-25)=sin45, so the answer is two of the root of two.

It's sin70cos25-cos70sin25, and then the basic company becomes sin(70-25) = half of the root number two.

First use the sum of the sum (sina*sinb into the form of sin(a+b)) and then use the sum difference product formula! It can be solved by turning into a special angle!

Soeasy sinusoidal product formula The original formula is equal to sin70cos25-cos70sin25=sin(70-25)=root of 2

To be honest, I don't have to read physics and chemistry basically, let alone listen to the teacher.

But as long as you don't listen to the class, you basically can't keep up with the progress.

You are in a state of confusion.

There needs to be a direction to guide you and give you the motivation to learn from your heart.

Mathematics is about methods and skills.

But one thing that is good for you is that there is no foundation in mathematics (not so much as addition, subtraction, multiplication and division).

As long as you watch the teacher do the questions, you don't need to think about how much you didn't understand in the past.

You can start from scratch, basically you have to give some test papers, prepare for the college entrance examination.

At this time, the test paper is not enough, but you can't finish all the questions at once.

What needs to be given by the teacher, as long as he talks about it, which point he has talked about, and then memorizes this point to do all the topics about this point in the test paper.

Again, go to see some college entrance examination questions by yourself and integrate into them, so that you can keep up with the progress of the college entrance examination.

Mathematics, indeed, is the key to practice, but the effect of blindly doing the questions all the time will not be very good.

Sometimes, look at the question to see the answer and method, and next time you look at it, it is good to be able to associate it.

Just write the answers on scratch paper and look at it next time until you are very proficient.

This is my method, I once won a single mathematics city champion in the college entrance examination, haha.

And on the scratch paper that I still miss, I just remember that I wrote only one equation.

I don't have any way to learn mathematics, but I've been used to it since I was a child, and I have to listen to lectures to understand it, otherwise I won't be able to do some difficult things. I wish you success in your sprint.

After class, you should learn "three kinds of review".

Deep Pick Theory (Concepts, Theorems, Formulas, Laws).

Deep-cut example questions. It is necessary to "know what it is and know why it is true", so that we can draw inferences from three and draw inferences from one example.

2) Unit Review – After each unit is completed, you should do a unit review and complete the following tasks:

Organize and connect knowledge points to form a theoretical system of units.

Summarize the mathematical ideas and methods of unit theory to bring understanding to a higher level.

Typical examples and exercises in the unit are selected for further study and future review. Through the unit review, the problem of Zhou Qing is completely solved.

3) Pre-test review and post-test summary. Many students don't know how to review before the exam, they only know how to find questions to do and memorize question types. In this way, the knowledge system is often incomplete, lost, and those who have not practiced dare not do it, and the questions they have done may not be done correctly.

Therefore, systematic revision before the exam is important. Through review, students can discover the internal connection between knowledge, grasp the rich connotation and essence of various concepts and principles, integrate scattered knowledge into systematic knowledge, and then form a new "autonomous" knowledge structure. Close the theoretical system of the unit and its connotation and explain it from beginning to end, when you can't say it, open the book and read it, and continue to talk about it until you can explain it all clearly;

The central topics, mathematical ideas and methods that have been reviewed and sorted out in the unit are also described in the above way, so that the focus is highlighted and the pertinence is strong.

Analyze or do the typical examples and exercises.

After the exam, it is necessary to summarize the successful experience, but also to summarize the reasons for the loss of points, find out the ways to improve, and record the points of loss in the "wrong question book", and strive to achieve "no mistakes" for the points lost in the future. Solve the problem of monthly clearance (no monthly exam is required, but chapter clearance is required).

Although I am a liberal arts student, I am interested in mathematics. I think the most important thing to learn this subject well is to be interested! Since you are good in junior high school, I believe that you will learn well, no problem!

The foundation is important! Think for yourself! It's really important not to discuss it with others as soon as you don't know it, because exams don't let you discuss it, it's up to you.

I believe you will improve your grades and work hard!

First of all, it's good that you have such an idea, and the next thing is to make your idea, and if you want to learn math well, you have to be interested in it, treat it as the person you like, and use all your methods to understand him. Of course, when you don't know how to ask too many questions, you often recall what you have learned, practice more than one problem, and often set your own goals.

Generally do some questions first and then summarize the method of solving that type of question, and then do some questions of the same type but have changes to consolidate it, the third year of high school, it is best to prepare a wrong question book, the good questions that you usually see (referring to the special solution method or the problem with a strong method) and the monthly examination and various joint examinations, the questions that you do wrong in the weekly practice are copied down, and then leave a suitable position in the back of each question to analyze the solution method of this question one by one, so that it can be freed from the shackles of this question and sublimated into a method......

I think you should always do math problems, and you can't ask parents and teachers. Let them help you out.

Violent exercises.

All of these methods are floating clouds.

What is the use of studying mathematics? How can I learn math well?

Listen carefully in class, do more questions after class, and review well.

Have the ability to induct and condition.

That's how I learned math. Listen to the teacher's lecture in class. Do more questions after class. My goal is to do more questions until I know what to do.

This is my learning method. I don't know if it's right for you.