* 1, do more questions. I have to say that the tactics of asking the sea in the third grade are very useful. If you do too much, the questions will be familiar. 2. Be good at summing up. That is to say, don't throw the test paper aside directly after you finish the question, write the questions you can't do in the wrong book, then analyze the thinking of this question (if you can't, you can consult your children's shoes and teachers), and compare it with similar questions to find out the law of solving this kind of questions.
3. Wrong title book. The wrong set of questions is really useful. As I said just now, after writing in the wrong book, we should sum up and find out the rules of this kind of questions. Also, you can do the wrong question again every few days to see if you really have it.
4. textbooks. Textbooks are my magic weapon for learning, and reading textbooks thoroughly is the basic requirement for high marks. The formulas and theorems you said can be deduced by yourself according to the examples in the book, and then you can use them more when you do the problems and strengthen your memory when you make mistakes.
5, mentality. This is a must in the exam. If you are upset and your mind is blank, it will affect your performance.
* Whether it's algebra or geometry, you have to be interested in mathematics first. In fact, junior high school mathematics is not difficult. As long as you listen carefully in class, know how to use those formulas and theorems, and refresh your exercises after class, you won't forget them. What else can't you do? You have to believe that you can find the feeling of mathematics, and don't dream. You have to pick up a pen and write on paper, and the answer may be ready. In addition, if you have time, you can try several ways of a topic and sum up your experience and skills. Of course, although the topic is often criticized, it is also a way to do feelings. If you are not familiar with the textbook, I suggest you read the textbook and examples first, and then read the questions after you understand and digest the knowledge. Maybe you will have a bright future and stop asking people. If you feel enlightened in the process of asking people, you have learned a lot! Remember that no matter how complicated the topic is, it is also composed of small knowledge points, so don't lose heart, come on ~ ~
* 1. Junior high school mathematics content is not much, basically quadratic function and geometric similarity are congruent throughout the whole three years. Therefore, learning junior high school mathematics must first master these contents, and other contents are extensions or expansions;
2. I have studied algebra in junior high school mathematics, and it is also some algebraic principles, such as quadratic equation formula, the relationship between roots and coefficients, and the sum and difference of squares. These principles are not only embodied in those formulas, so you must learn its methods. For example, if you know the formula of (a+b) 2, do you know the formula of (a+b+c) 2? Do you still know the formula of (A+B) 3? Do you know how to make it completely flat? How to calculate x 2-2x-3 = 0 orally (by completely flat method)? Do you know how to factorize? These are actually (a+b) 2, from which we get the property of Y = AX 2+BX+C!
3. The geometry is clearer. Similarity is the main line, and others are its extensions. Can you prove the theorem of internal angle bisector? Can you prove it from three aspects? What are the properties of inner heart, center of gravity, hanging heart and outer heart, and how are they found and obtained? What is Seva Theorem? What is Menelaus Theorem? What do they have to do with heart, center of gravity, heart and heart?
Mathematics is a method, not a formula. I only know a few formulas, just a little scratch. As mentioned above, if you can prove Menelaus theorem, you already know similar triangles!
Besides the importance of methods, thinking is also very important in mathematics. I am disgusted with the tactics of asking the sea. I think it's stupid pig's slander on mathematics! Mathematics is a very interesting and abstract subject, which emphasizes analytical thinking. What is the ocean of problems? Doing the problem repeatedly can only be marking time! So, I suggest you think more, why can you think like this, why do you think like this? Why can this formula be used in this way and other ways? In other words, we are often good at seeking mathematical analysis methods.
6. In addition to methods and ideas, you should be good at popularization. You have studied the interior angle bisector theorem, so is there any exterior angle bisector theorem?
If you find a way, you will definitely improve your grades. I think the relationship among formulas, theorems and definitions should be clarified in mathematics. It is useless to recite all the formulas, theorems and definitions in mathematics. If you don't understand it thoroughly, even if you recite it, you won't be able to use it or do the problem. So only by doing this, you will have no obstacles in solving math problems, and your math will surely advance by leaps and bounds. You can go to Li's Sina blog to see how to learn mathematics. He summed up many good methods and answering skills. He used to be the top student in the senior high school entrance examination. I hope reading it will help you and help you get good grades. Let's go
* junior high school geometry is rich in content and covers a wide range, and its proof questions are endless and unfathomable. Therefore, it is normal for ordinary students to find it difficult when they first learn geometry and feel confused when solving geometry problems. Even teachers who have many years of experience in solving problems will encounter this situation. There is no need to worry or be afraid of geometry. As long as you master the correct learning methods and study hard, you can learn geometry well. Let's talk about the teacher's own feelings on how to learn junior high school geometry well.
Mathematics is a discipline with rigorous thinking, especially geometry. When solving geometry problems, every step and every link must have strict reasons. These reasons can be conditions given by questions, definitions, axioms, theorems, inferences, etc. It can be seen that mastering some axioms and theorems is a prerequisite for solving geometric problems, so it is particularly important to remember the axioms and theorems that have appeared in textbooks. If you want to learn any subject well, you need to accumulate some experience. Remembering axioms and theorems is the first step to learn geometry well.
When you start to learn geometry, find some basic and simple problems to do. Don't aim too high, haste makes waste! For students with weak foundation, it is particularly important to remember typical and easy-to-remember questions, which is the second step of accumulation.
Take me for example. When I was in grade one, I thought math was quite difficult. In class, the more I talk, the more I want to sleep. But I'm getting used to it. I preview the contents of the book before every math class. In that case, I think the teacher's class is very simple, as if it's okay even if he doesn't listen. In fact, our teacher just tells some basic examples, and it's nothing difficult. However, if you don't preview in advance after class, don't listen to lectures in class, and have a solid foundation, then there is no concept at all. The content of senior one is fairly simple. As long as you study hard and persevere, you will learn it well. Many people who are new to junior high school are not used to taking exams every three days and different types of questions, but I believe that when your study habits get better, your grades will definitely be good. Don't lose confidence in yourself and don't worry too much. It's the first day of junior high school, and it's not the senior high school entrance examination soon. But the foundation must be mastered, and it is impossible to improve your grades at once. Many things can't be done well at first, which is the so-called "everything is difficult at the beginning". Believe in yourself, if you do more, some types of problems will be solved. Doing some extended problems on weekends or doing one every day can be called "cluster" learning ... gradually you can find that your math is getting better.
* Learning to learn, mastering learning rules and learning methods and cultivating knowledge-seeking ability are very important tasks in today's youth learning. Only with good learning methods can we achieve the learning effect of "getting twice the result with half the effort".
I. Reading Comprehension At present, there is a serious problem for junior middle school students to learn mathematics, that is, they are not good at reading mathematics textbooks and often memorize them. Paying attention to reading methods is very important to improve junior high school students' learning ability. To learn a new chapter, first read it roughly, that is, browse the branches of what you have learned in this chapter, then tick while reading, get a general understanding of the content of the textbook and its key points and difficulties, and mark the places you don't understand. Then read carefully, that is, according to the learning requirements of each chapter after the festival, read the content of the textbook carefully, understand the essence of mathematical concepts, formulas, laws and thinking methods and their causal relationship, grasp the key points and break through the difficulties. Read it again as a researcher, that is, discuss the context, structural relationship and arrangement intention of knowledge from the perspective of development, summarize the main points, finish reading the book, form a knowledge network and improve the cognitive structure. When students master these three reading methods and form habits, they can essentially change their learning methods and improve their learning efficiency.
Second, to improve the quality of lectures, we should cultivate the habit of listening and understanding lectures. Pay attention to the learning emphasis emphasized by the teacher in each class, the introduction and derivation methods and processes of theorems, formulas and rules, the tips and treatment methods of key parts of examples, the explanation of difficult problems, and the final summary of a class. In this way, grasping the important and difficult points and attending classes along the process of knowledge development can not only improve the efficiency of attending classes, but also change from "listening" to "listening".
3. Asking questions is an effective way to improve learning efficiency. In the process of learning, when encountering problems, take the time to ask teachers and classmates, and master the knowledge that you don't understand or learn in the shortest time. Set up your own error book and read it often to remind yourself not to make the same mistake twice. So as to improve the learning efficiency.
* 1, grasp the concept
Doing math without understanding concepts is equivalent to reading an article without knowing words. The first step in learning mathematics is to recite concepts.
2. Grasp the memory
Some people may say, how to recite so many concepts, methods and pay attention? A good way is to recite with the help of jingles.
3. Grasp the system
Draw the knowledge structure diagram in time after each chapter. It should be noted that you must draw from memory, correct any mistakes, and never copy the knowledge structure diagram at the back of the book or in the tutorial.
4. Grasp the wrong question
No matter whether you usually do questions or take exams, there will be wrong questions. At this time, we should pay attention to the wrong set, and it is best to write a cause analysis. In this way, you can't find the paper when you review it in time, and you can review it immediately if you read the wrong version.
It's important to grasp the problem, but never use the tactics of questioning the sea. You should also pay attention to methods when doing problems. If you do all the problem sets, time is definitely not allowed. What shall we do? Look at the questions first, and the questions we can do will pass. If you can't do the problem, you won't just look at the problem-solving process. You must mark the problem. Next time you look at this set of questions, focus on the question of marking.
6, grasp the finishing
Record the key points, difficulties and mistakes mentioned by the teacher in the notebook and sort them out regularly for review.
I hope my answer is helpful to you.