How can we learn the first point of eighth grade mathematics well and understand the concept deeply?
Concept is the cornerstone of mathematics. Learning concepts (including theorems and properties) requires not only knowing why, but also knowing why. Many students only pay attention to memorizing concepts and ignore their own background, so they can't learn math well. For every definition and theorem, we should know how it comes from and where it is used on the basis of remembering its content. Only in this way can we make better use of it to solve problems.
To understand the concept deeply, you need to do more exercises. What is "doing more exercise" and how to do it?
Second, look at some examples.
Careful friends will find that after explaining the basic content, the teacher will always give us some extra-curricular examples and exercises, which is of great benefit. The concepts and theorems we learn are generally abstract. In order to make them concrete, we need to apply them to the theme. Because we have just come into contact with this knowledge, we don't have enough skills to use it. At this time, examples will be of great help to us, and we can put the existing concepts in our minds in the process of reading examples.
First of all, kung fu should be used in peacetime, and there will be no accidents before the exam. What needs to be mastered in the exam should be mastered at ordinary times. Don't fight fatigue the night before the exam, but have a good rest. In this way, you can have abundant energy in the examination room. When you take an exam, you should let go of the burden, drive away the pressure, concentrate on the test paper, analyze it carefully and reason closely.
Secondly, exams need skills. After the papers are handed out, we should first look at the amount of questions and allocate time. If you don't find an idea when you do the problem, you can put it aside for a while and finish what you have to do. Think about it later. After one question is finished, don't rush to do the next one, but read it again, because at this time, your thoughts are still clear and easier to check. For the answers to several questions, you can use the conclusion of the previous question when answering the following questions. Even if the previous question is not answered, as long as the source of this condition (of course, it is required to prove the topic) can be used. In addition, you must consider the test questions comprehensively, especially the fill-in-the-blank questions. Some should indicate the range of values, and some have more than one answer. Be careful and don't miss them.
Finally, be calm during the exam. Some students' brains get hot as soon as they encounter a problem that they can't do. As a result, when they are anxious, they can't do what they could have done. You can't get good grades in this state of mind. We might as well take advantage of the psychology of self-consolation in the exam: others can't do the questions I can't do, and (commonly known as the spiritual victory method) may calm our mood and give play to our best level. Of course, comfortable is comfortable.