In the usual teaching, we should pay more attention to and encourage marginal students, stimulate students' self-confidence in learning mathematics well, and tell students the truth that "a sweat is a harvest" and "how can we see a rainbow without experiencing wind and rain", so as to stimulate more students' enthusiasm for learning and cultivate their interest in learning mathematics as much as possible. We should pay special attention to marginal students with learning difficulties, take effective measures in time to stimulate their interest in learning mathematics, guide them to improve their learning methods, help them solve their learning difficulties, and make them qualified junior high school graduates through hard work. First of all, we should have a heart-to-heart talk with them and pour the teacher's love into the students. Teachers' enthusiasm, thoughtfulness and patient help will make students feel the sincere feelings between teachers and students from the heart, thus stimulating their learning confidence. Secondly, in classroom teaching, especially in topic selection, there should be a gradient to meet their cognitive level and gradually improve their learning quality. Finally, carry out mutual help activities in class, create a good review situation, and do a good job of extracurricular counseling in a planned and targeted manner. Let students review in a pleasant environment, which can get twice the result with half the effort. Usually give new lessons, fresh and interesting; It is necessary to make use of students' original interest in learning and sense of competition, so that students can form a learning atmosphere in which you chase after me; In the review methods, we should be flexible and diverse, make more use of the exercises related to students' reality, choose the way of cooperation and mutual assistance, reduce the psychological pressure of students with difficulties, absorb the new knowledge given by classmates, and at the same time satisfy the sense of success and feel joy of outstanding students, so as to promote their all-round development. The transformation of marginal students focuses on the following aspects: 1, encouraging and guiding marginal students out of the predicament, encouraging them to establish confidence, correctly treating success or failure, and conducting psychological health counseling. Help them overcome anxiety and timidity. Through careful psychological education, most students can put their minds right and believe that they have the strength and will succeed. 2. Grasp the details and facts to promote the rapid improvement of marginal students. The main position to solve the marginal problem is still in the classroom. Only by mobilizing the learning enthusiasm of marginal students and maximizing the efficiency of classroom teaching can we fundamentally solve their fundamental problems such as "poor subjects" and "robbing Peter to pay Paul". In particular, it is necessary to help them lay a good foundation and improve their problem-solving consciousness and thinking quality. Marginal students must be paid more attention, asked questions, checked and encouraged in class than other students. 3. Make up lessons while practicing and changing, we must stick to books and strengthen the foundation. There are both special training and rolling error correction, which are mainly medium-sized and medium-lower. Basic and easy-to-lose key topics should be corrected repeatedly, once a week, until they are mastered. Marginal papers and assignments should be approved face to face, and a class of problems should be solved from point to area. 4. Help marginal students to eliminate mistakes caused by non-intellectual factors, such as careless examination of questions, nonstandard problem solving, poor computing ability, careless writing, unscientific examination methods, etc. Teachers must take pains, often remind and guide, and gradually help eliminate them. Marginal growth has great potential. The key is whether our teachers have the confidence and patience to make them move from inferiority to self-confidence. Through teachers' respect, tolerance and care, they can warm students' hearts, capture the bright spots on students and make our education more perfect.