20 19 senior high school entrance examination: the secret of junior high school mathematics examination score
1. Explore concepts and formulas carefully.
Many students pay insufficient attention to concepts and formulas. This kind of problem is reflected in three aspects:
First, the understanding of the concept only stays on the surface of words, and the special situation of the concept is not paid enough attention. For example, the concept of algebraic expression (an expression expressed by letters or numbers is algebraic expression) has been neglected by many students? Is a single letter or number algebraic? .
Second, concepts and formulas are blindly memorized and have nothing to do with practical topics. The knowledge learned in this way can't be well connected with solving problems.
Third, some students do not pay attention to the memory of mathematical formulas. Memory is the basis of understanding. If you can't memorize the formula, how can you skillfully use it in the topic?
Our suggestions are: be more careful (observe special cases), go deeper (know the common test sites in the topic), and be more skilled (we can use it freely no matter what it looks like).
2. Summarize similar topics.
This work is not only for teachers, but also for our classmates.
When you can summarize the topics, classify the topics you have done, and know what types of problems you can solve, what common problem-solving methods you have mastered, and what types of problems you can't do, you will really master the tricks of this subject and really do it. Let it change, I will never move? .
If this problem is not solved well, after entering the second and third grades, students will find that some students do problems every day, but their grades will fall instead of rising.
The reason is that they do repetitive work every day, and many similar problems are repeated, but they can't concentrate on solving the problems that need to be solved. Over time, the problems that can't be solved have not been solved, and the problems that can be solved have also been messed up because of the lack of overall grasp of mathematics.
Our suggestion is: summarize? Asking fewer and fewer questions is the best way.
3. Collect your typical mistakes and problems you can't solve.
The most difficult thing for students is their own mistakes and difficulties. But this is precisely the problem that needs to be solved most.
Students do this topic for two important purposes:
First, practice the knowledge points and skills learned from practical topics.
The other is to find out your own shortcomings and make up for them. This deficiency also includes two aspects, mistakes that are easy to make and contents that are completely unknown.
However, the reality is that students only pursue the number of questions and deal with their homework hastily, rather than solving problems, let alone collecting mistakes. We suggest that you collect your typical mistakes and problems that you can't do, because once you do, you will find that you used to think you had many small problems, but now you find that the same problems are recurring; You thought you didn't understand many problems before, but now you find that these key points have not been solved.
Our suggestion is: doing problems is like digging gold mines. Every wrong question is a gold mine. Only by digging and refining can we gain something.
4. Ask questions and discuss questions you don't understand.
Find problems you don't understand and actively ask others for advice. This is a very common truth. But this is what many students can't do.
There may be two reasons:
First of all, this problem has not been paid enough attention and no solution has been sought.
Second, I'm sorry, I'm afraid of asking teachers to be trained and asking students to be looked down upon by them. With this mentality, you can't learn anything well.
? Close the door? It will only make your problems more and more. Knowledge itself is coherent, the previous knowledge is unclear, and it will be more difficult to understand later. When these problems accumulate to a certain extent, you will gradually lose interest in the subject.
Discussion is a very good learning method. A difficult topic, after discussion with classmates, may get good inspiration and learn good methods and skills from each other. It should be noted that it is best to discuss with your classmates at the same level, and everyone can learn from each other.
Our suggestion is: study hard? Is the foundation? Good question? Is the key.
5. Pay attention to the cultivation of actual combat experience
Examination itself is a science. Some students usually get good grades. As soon as the teacher asks questions in class, they do everything and do the questions after class. But when it comes to the exam, the results are not ideal.
There are two main reasons for this:
First, the test mentality is not good, and it is easy to be nervous.
Second, the examination time is tight and it can never be completed within the specified time.
Bad mentality, on the one hand, we should pay attention to our own adjustment, but at the same time we also need to exercise through large-scale examinations. Every exam, everyone should find a suitable adjustment method and gradually adapt to the rhythm of the exam with the passage of time. The problem of slow problem solving needs students to solve in their usual problem solving.
Doing homework at ordinary times can limit time and gradually improve efficiency. In addition, in the actual exam, we should also consider the completion time of each part to avoid unnecessary panic.
Our suggestion is: release? Do your homework? As an exam, right? Exam? As homework. However, it needs to be emphasized that the most important thing of any method is effectiveness. Students must avoid formalization and pursue practical results in their study.
20 19 senior high school entrance examination: seven ways to learn junior high school mathematics well
1. Active learning
The purpose of preview is the process of actively acquiring new knowledge, which is helpful to mobilize the initiative of learning. Before explaining new knowledge, it is an important means to read the teaching materials carefully and develop the habit of previewing actively.
Therefore, we should pay attention to cultivating self-study ability and learn to read books. For example, if you teach yourself an example, you should find out what the example is about, what the conditions are, what you want, how to answer it in the book, why you answer it like this, whether there is a new solution and what the steps are. Grasp these important problems, think with your head, go deep step by step, and learn to use existing knowledge to explore new knowledge independently.
Positive thinking
Many students just listen and can't think actively in the process of listening, so when they encounter practical problems, they don't know how to apply what they have learned to answer them.
The main reason is that you didn't consider the trouble caused in class. In addition to following the teacher's thinking, we should also think more about why we define it like this, and what are the benefits of solving problems like this. Taking the initiative to think can not only make us listen more carefully, but also stimulate our interest in some knowledge and help us learn more.
Rely on the teacher's guidance to think about the way to solve the problem; The answer is really not important; What matters is the method!
3. Be good at summing up laws
Generally speaking, there are rules to follow in solving mathematical problems. When solving problems, we should pay attention to summing up the law of solving problems. After solving each exercise, we should pay attention to reviewing the following questions:
(1) What is the most important feature of this problem?
(2) What basic knowledge and graphics are used to solve this problem?
(3) How do you observe, associate and transform this problem to achieve transformation?
(4) What mathematical ideas and methods are used to solve this problem?
(5) Where is the most critical step to solve this problem?
(6) Have you ever done a topic like this? What are the similarities and differences between solutions and ideas?
How many solutions can you find to this problem? Which is the best? What kind of solution is a special skill? Can you sum up under what circumstances?
Put this series of questions through all aspects of problem solving, gradually improve and persevere, so that children's psychological stability and adaptability to problem solving can be continuously improved, and their thinking ability will be exercised and developed.
4. Broaden the thinking of solving problems
Math problem solving should not be limited to this topic, but should be generalized, think more and think more. After solving a problem, think about whether there are other simpler methods that can help you broaden your mind and have more choices in the process of doing the problem in the future.
There must be a book wrong.
Speaking of wrong books, many students feel that they have a good memory and can remember them without wrong books. This is a kind of. Hallucinations? Everyone has this feeling. When the topics increase and the learning content deepens, you will find yourself at a loss.
Wrong questions can record your own knowledge shortcomings at any time, which is helpful to strengthen the knowledge system and improve learning efficiency. Many schoolmasters got high marks because they used the wrong textbooks on their own initiative.
6.？ 1*5? learning method
? 1? 5? The learning method is to do a problem and think from five aspects, which can be combined with the above? Summarize the law and expand the thinking? . These five aspects are:
What is the knowledge point of this question?
(2) Why do you want to do this?
How did I come up with it?
What else can I do? Is there any other way?
⑤ A topic is changeable. See how many forms it has. Buy it.
Don't feel trouble. The hardest thing to cultivate study habits is the first month, just like a rocket taking off. The hardest part is the ignition and take-off stage. Once you have developed good math study habits and ways of thinking, you will be very relaxed in your future study.
7 Complete the homework independently
Nowadays, many students use some applications to help them finish their homework. They can find the answer by looking for photos, or copy other students' homework. This can be divided into two situations. One is for quick photos and speed. If you do this often, you will form a bad habit of reviewing questions, which is easy to be clear at a glance and careless.
Another is for convenience, which will lead to the development of students? Afraid of trouble once the topic is a bit difficult, you will be upset and at a loss. So everyone must form the good habit of finishing homework independently.