Junior high school, especially junior high school, can obviously improve your grades through a lot of practice. This is because junior high school mathematics knowledge is relatively simple and easy to master. Through repeated practice, you can improve your proficiency and grades. Even so, your understanding of some problems is not deep enough, or even unknown. For example, junior high school asked |a|=2, and few people made mistakes in the senior high school entrance examination. However, after entering high school, the teacher asked, if | A | = 2 and A < 0, what is A? Even the students in some key schools answered without thinking: a=2. Just to illustrate this problem.

Another example is a classmate of Grade One in Beijing No.4 Middle School. After the mid-term exam of Grade One last semester, he protested to the teacher that "you usually don't have much homework and exams, so I won't study", which also shows the importance of ideological change.

Mathematics in senior high school is theoretical and abstract, so it needs to work hard, think more and learn more.

Second, improving the efficiency of class is the key.

During students' study, the time in class accounts for a large part. So the efficiency of class determines the basic situation of learning. To improve the efficiency of lectures, we should pay attention to the following aspects:

1, preview before class can improve the pertinence of listening.

2. The difficulty found in the preview is the focus of the lecture; You can make up the old knowledge that you haven't mastered well in the preview.

3. Science in the process of listening to lectures

First of all, make material and spiritual preparations before class, and don't leave books and books in class; Don't do too much exercise or read books, play chess, play cards or have a heated debate before class. In order to avoid being out of breath after class, or unable to calm down.

Secondly, we should concentrate on the class. Concentration is to devote yourself to classroom learning, from ear to ear, from eye to heart, from mouth to hand.

Listening: Listen attentively, listen to how the teacher lectures, analyzes and summarizes, and listen to the students' questions and answers to see if they are enlightening.

Eye-catching: read textbooks and blackboard writing while listening to the class, watch the teacher's expressions, gestures and demonstrations, and accept the ideas that the teacher wants to express vividly and profoundly.

Heart orientation: think hard, keep up with the teacher's mathematical thinking, and analyze how the teacher grasps the key points and solves problems.

Mouth-to-mouth: Under the guidance of the teacher, take the initiative to answer questions or participate in discussions.

Reach: Draw the key points of the text on the basis of listening, watching, thinking and speaking, and write down the main points of the lecture and your own feelings or opinions with innovative thinking.

If you can achieve the above five goals, your energy will be highly concentrated, and all the important contents learned in class will leave a deep impression on your mind.