Modern classroom teaching requires teaching and bilateral teachers to play a leading role. The key to the failure of subject teaching is whether the subjectivity can be brought into full play. Tao Xingzhi, a famous educator, believes that teaching, teaching, research, teaching, creating teaching practice and solving problems are just like directing actors. In addition to the guidance of teachers, we must also give full play to the participation of the main body. Performance teachers should pay attention to subjectivity. Talking about the subjectivity of our mathematics teaching, the famous American theorist Rogers pointed out that the relationship between meaningful learning materials and their own goals is produced by cognitive ability. To stimulate the learning machine, it is necessary to define the learning objectives. Learning objectives should be adopted. Learning objectives should be clear. Students should lose interest and be distracted in class. Choosing the corresponding learning ability according to the learning goal embodies the training goal of our generation. Knowledge is new and different, and learning knowledge will always meet the needs of society. Ushinski said: There is no interest in using compulsory learning to stifle the desire to explore the truth. It is very important to improve the learning effect with computers. In mathematics teaching, it is very important to use intuition, visualization and operability. Adopt audio-visual teaching mode to demonstrate practical modern teaching methods such as cutting, spelling and doing, and stimulate learning interest. For example, the calculation of teaching plane geometric figure area takes the form of operation guidance, so that hands can cut, see, wave, spell, solve and calculate, which plays the role of learning subject and cultivates learning ability. Piaget, a Swiss philosopher, pointed out: All truths must be acquired or rediscovered by oneself, and at least the benefits of teaching from lifelong learning should be explained through reconstruction and simple transmission. Teaching should teach reading materials to think, question, explore knowledge and ability, take notes, remember what you think or experience your body's self-ability, improve your habits, seek progress and initial self-ability, and plan the steps to achieve your goals. Subjective performance fully reflects the proportion: the ninth volume of the 91 textbook talks about the calculation of parallelogram area. We make our own teaching AIDS (parallelogram) and do them by hand. The parallelogram area calculation department wants to connect with the teaching AIDS used by teachers in the second school. Projection explanation is easy to understand and cultivate self-ability, so as to cultivate thinking, adjust innovation consciousness and realize active subjectivity more effectively. Third, he is good at showing the shell thinking knot of classroom discussion language thinking. Both of them are closely related to the classroom teaching environment, so that learning is isolated from each other and complex problems can be carefully designed. Examples and exercises can be discussed in groups or classes, or by teachers. Discuss creation, discuss, question and solve problems with others, be confident and have a strong sense of self-expression. Everyone involved in the discussion wants to fully express their opinions and try their best to show that their brains are always in a positive state of mind, and the creative spark will eventually achieve the teaching goal. If you can only grasp the discussion formula, then you can only jump into the classroom atmosphere and be more subjective. It's better to understand the same internal opposition than to talk about the ninth book of Jiuyi textbook, travel problems, application problems and teaching encounter problems. * * * The distance of peers multiplied by the encounter is equal to two cars. Two cars have the same distance, and two cars in the same room have the same distance. Let's discuss and reconsider the form of travel. Let's take an active part in painting, painting, walking and other activities. Summarize several travel problems, discuss problems, jump into the classroom atmosphere, play a role in thinking and reflect subjectivity. Let's cultivate the habit of independent thinking. Confucius said: If you think without thinking, you will learn to think with wings. Think independently and establish the order of knowledge structure. Let's practice independently or practice the skills of commenting on teachers. The emphasis is on the key points and difficulties, the laws of knowledge structure and the ideas of error-prone, error-prone and error-prone. If you want to understand and think, you must suddenly realize and be impressed. The external adaptation test not only tests the ability of independent thinking, but also tests teachers' collection of feedback, self-evaluation and self-evaluation. Teachers control examination papers, questions, etc. Introspection promotes improvement. Effective teachers should encourage the poor to motivate the excellent. 5. Let yourself summarize. Confucius, an educator in ancient China, once said: Learning the old helps teachers to set up review exercises, consolidate new knowledge, learn the old knowledge, form the habit of summing up, break the accumulation of knowledge, improve the learning structure, ensure the improvement of the effect, and try to guide teachers to make a systematic summary. Teachers cooperate to make up for deficiencies or don't want to accumulate knowledge for a long time. Learning schedule; The goal of modern education