How to quickly master the second year of mathematics with additional points

It doesn't have to be that complicated.

Just understand the concepts of the book, practice questions.

Then you'll be able to master it.

Have time to do some related questions.

Then your integers and functions will improve.

What city are you in? Hire a tutor. The students of the Normal University are all tutors, and they still have a set of surprise exams.

Forget it this semester, I wasn't good at math in the second year of junior high school, but I understood it in the third year of junior high school!

Categories: Education, Science, >> Learning Aid.

Problem description:1The first side of the triangle is 2m longer than the first side, the third side is 2m longer than the second side 2 3, if the circumference of the triangle is 16, then the length of the second side is mu (

b are two given integers, and small r calculates the value of the integer ax+b when x=-1,1,2,4 respectively, and obtains the following four results in turn. Only three of them are known to be true, then the wrong one is ( ).

a.-a+b=-1

3.(1) Knowing that p and q are positive integers, (x+p)(x+q)=x 2+mx+100, try to determine the value of m.

2) Knowing that p and q are integers, (x+p)(x+q)=x 2+mx+100, try to determine the value of m.

Please write the process. By the way, leave a Q number!

Analysis: The first question is C

The length of the second side is m 3n 2m, that is, 3m 3n, and the length of the third side is (3m 3n) 2 3 2m, that is, 4m 2n, and the circumference is m + 3n = 3n + 3m + 4m + 2n = 8m + 8n = 16, so m + n = 2, then the second side length is 2 3 6

The second question D exclusion method, assuming that A and B are correct, then A 3, B 2, then C is also correct, D is incorrect, which is in line with the meaning of the question, so the answer is D

Question 3 (1) simplification of p+q m, p*q 100, because pq is a positive integer, so the combination of pq can only be 20, 5 or 10, 10 or 2, 50, or 1,100, or 4,25, so m is 25, 20, 52, 101, 29

2) In the same way, m is 25, 20, 52, 101, 29 or 25, 20, 52, 101, 29

In the second year of junior high school, students must thoroughly understand the content of textbook knowledge when learning mathematics, many students have made great efforts to learn mathematics, and they have done a lot of practice problems, but the actual results are not raised, so students should reflect on their own learning methods and reflect on the mastery of basic knowledge of books.

Generally speaking, 70% of the difficulty of mathematics in junior high school is basic knowledge, so if you can learn the basic knowledge points thoroughly, there is no problem in getting an upper middle or high level in mathematics. In particular, some second-year junior high school students who are not very good at mathematics can take more time to write and memorize basic concepts, formulas and some typical example problems on the basis of understanding.

It is very important for junior high school students to develop good study habits, there are many junior high school students who are prone to distraction in class, students can preview the new course content to be learned in advance before class, not only can have a certain understanding of the new content to be learned, but also can enhance students' interest in learning, and listen to the teacher's lecture more attentively in class.

There are a lot of newly learned knowledge, and junior high school students may have a good grasp in class, but everyone must review it after class, and do more practice questions to consolidate the knowledge content, so that the memory of the learned knowledge can be more profound.

In the process of doing various practice problems, students in the second year of junior high school must pay attention to summarizing the problem-solving skills and routines, not only the number of questions, but also learn to do the questions skillfully and well.

For the practice problems that have been done, students in the second year of junior high school must fully understand the principles, summarize the steps to solve the same type of questions, and organize the exercises they have made mistakes together, and often look at them to deepen their impressions, which is very helpful for the improvement of their grades.

If students in the second year of junior high school want to improve their math scores, there needs to be a process, each student's foundation is different, and the length of this process is also different, but everyone must firmly believe that as long as you are willing to work hard, you will definitely have gains!

Summary. Tip 1 to improve your math score: Write down all the knowledge points that the teacher said in your notebook and really master these knowledge points.

2: Find the corresponding topic according to the knowledge points, so that you can learn the knowledge points, and also find the way to do the problem 3: do more questions appropriately, brush the questions more, and master the method, and the next time you encounter it, you will quickly make it.

Tip 1 to improve your math score: Write down all the knowledge points that the teacher said in your notebook and really master these knowledge points. Two:

Find the corresponding questions to do according to the knowledge points, so that you can learn the knowledge points, and also find the third way to do the questions: do more questions appropriately, brush the questions more, and master the method, and the next time you encounter it, you will quickly make it.

Tip 1 to improve your math score: Write down all the knowledge points that the teacher said in your notebook and really master these knowledge points. Two:

Find the corresponding questions to do according to the knowledge points, so that you can learn the knowledge points, and also find the third way to do the questions: do more questions appropriately, brush the questions more, and master the method, and the next time you encounter it, you will quickly make it.

Ignoring the basics Some students who "feel good about themselves" often despise the learning and training of basic knowledge, basic skills and basic methods, and often know how to do it, but do not seriously calculate and write, but are very interested in difficult problems to show their "level" and be ambitious.

You can't just look at the surface and not look at the connotation.

Every time we look at a problem, we should clarify its thinking, master its thinking method, and then encounter a similar problem or the same type of problem, and have a general impression in our minds, and it will be easier to do.

The habit of actively "thinking".

Actively thinking about the questions raised by teachers and classmates, and keeping yourself in the teaching activities, is an important guarantee for improving the quality and efficiency of learning. Students' thinking and questions are generally required to be grounded, organized, and logical.

With the increase of age, mathematical ideas such as association, hypothesis, and transformation should be gradually infiltrated when thinking about problems, and the quality and speed of thinking problems should be continuously improved.

Do more exercises If you want to learn mathematics well, you must do more exercises, but some students can learn well by doing more exercises, and some students still can't learn well after doing a lot of exercises. It is to ask everyone to think more about what knowledge it uses after making a novel topic, whether it can be solved more, whether its conclusions can be strengthened and promoted, and so on.

Comprehension Mathematics is a science subject, comprehension is very important, without comprehension, your learning of mathematics and all sciences will be difficult. The development of comprehension skills is difficult, and you have to try to understand some philosophical theories and relatively abstract mathematical models that are difficult for you. The simplest training is also very difficult, and it is necessary to see that the auxiliary line can reflect its approach in less than 1 minute for a moderately difficult problem.

Secondly, we should not only understand the problems taught by the teacher, but also figure out the specific mental process of the teacher when doing the problems, which is the basic ability of why many people learn mathematics well.

The above is how to learn mathematics in the second year of junior high school to improve your grades.

Tips for improving math scores in the second year of junior high school:

1.Change the way you learn.

Many students have memorized the knowledge content in mathematics textbooks and do not understand them well. Only by thoroughly understanding mathematical concepts, formulas, laws, and thinking methods, thoroughly understanding the ins and outs of knowledge, and structural relationships, summarizing key points, and aiming at the important and difficult points, can we truly form a knowledge network and improve the cognitive structure, so that we can essentially change its learning mode and improve learning efficiency.

2.Follow the teacher's train of thought in class.

In the process of classroom learning, it is necessary to concentrate, absorb and digest the learning points emphasized by the teacher in each lesson; Absorb and digest the teacher's prompts and handling methods for the key parts of the example problems, absorb and digest the teacher's explanations of difficult problems, and so on. In this way, we can grasp the important and difficult points, improve the efficiency of listening to lectures, and improve math scores.

3.If there is a problem, solve it in time, and you can't pretend to understand it.

Solving problems in time is one of the effective ways to improve learning efficiency, and for the knowledge that has not been learned and the problems that are not understood, we should seek solutions from teachers and classmates in time. At the same time, create a notebook to remind yourself not to make the same mistake a second time.

4.You should have a certain interest in learning mathematics.

Practice has proven that learning is best when our students are actively engaged in teaching activities. Therefore, in the process of learning, we always maintain our interest in mathematics learning and consciously participate in teaching activities. Mathematics is abstract, and the descriptions of various concepts are boring and boring.

We learn to discover examples of mathematical knowledge in daily life, and use mathematical knowledge in daily life to improve students' interest in learning mathematics. Making students feel that mathematics is useful can greatly stimulate students' interest in learning.

5.Improve math problem-solving skills.

Flexible use of mathematical knowledge, ideas, methods, etc. is the key to improving problem-solving ability. Then before using it flexibly, we first learn to "imitate", imitate the process of solving example problems, and transform it into our own learning method in the process of imitation. If you want to thoroughly grasp these knowledge content and gain the ability to solve problems, you must do exercises and do more exercises.

In the process of problem solving, we truly understand and digest the problem solving ideas, and ultimately improve our problem-solving ability.