Correcting math homework is an indispensable job for primary school math teachers every day, and it is also a test of classroom teaching effect. It plays a vital role in guiding students' study, checking the teaching effect and adjusting the teaching plan. When correcting math homework, we are used to using "√" and "×" to judge right and wrong, and using the percentile system to measure scores. This method plays a certain role in evaluating students' academic performance, judging whether solving problems is right or wrong, and comparing learning differences. However, it is boring, lack of motivation, and the evaluation result is one-sided, which can not comprehensively evaluate a student's basic quality and learning potential. How to improve students' interest in learning and give full play to their initiative through homework correction is a crucial issue. In order to solve this problem, I think we can start from the following aspects: first, let the marking methods be diversified 1, because of the school's requirements for teaching, completely change the math classroom workbook, which is the embodiment of teachers' most sense of responsibility to students. Only when teachers fully understand each student's homework can they make targeted comments on the homework. However, it is not difficult for us to see that some students have a simple view of tasks, and as long as they have finished, they have finished. The teacher has made great efforts to correct the homework, with little effect, but in general, it is still necessary to correct it in batches. 2, deskmate mutual approval Some classroom homework teachers must know the students' mastery at the first time, so as to facilitate the development of the next teaching link. They can mobilize students to evaluate each other at the same table, which can not only attract the attention of all students, but also quickly let both teachers and students know the feedback information of homework. 3. Cross-marking Some comprehensive practice papers can also allow students to cross-mark. It is both a teacher's marking and a student's marking, killing two birds with one stone. However, if students peer at the same table, they often care too much about their own papers and can't correct their classmates' papers wholeheartedly, so they can cross-correct across large groups. 4. When correcting math homework and paying attention to it in class, the more timely it is, the more helpful it is for students to establish correct math concepts. Therefore, in addition to the homework that will be collected and approved in the future, everything that can be approved in class should be approved in class to point out the students' personalized mistakes. But when criticizing in class, we should also deal with what the corrected students should do, and don't waste time and undermine discipline. No matter which correction method, one principle is "correction should be serious, timely, correct and effective". Secondly, math homework can also be corrected, which is a way to correct homework, so that students can better understand the advantages and disadvantages of homework, strengthen the communication between teachers and students, and promote the harmonious and unified progress of students in all aspects. This paper introduces comments into math homework correction, points out its shortcomings, affirms its achievements, mobilizes students' learning enthusiasm and achieves good results. 1, comments can guide students to do problems and stimulate students' interest in learning. When there are mistakes in the examination, calculation, observation, analysis and judgment of students' homework, teachers can use comments to guide students to solve problems correctly. Comments such as "find the correct quantitative relationship first", "try it by backward deduction" and "what to do next" are actually the routes for students to think. Students think and correct themselves under the teacher's prompt. According to the guidance, students not only find out where the mistakes are, but also know why they are wrong and how to correct them. "The method is great, but be careful!" "Wonderful solution, wonderful", "You must have a wonderful idea, because you are my pride". Don't scold exercise books with particularly poor quality. On the contrary, try to find their bright spots and mobilize their enthusiasm in an encouraging tone. "You must do it! You have made great progress because you have worked hard. I'm glad to see you make progress. I want you to walk up a flight of stairs. " This emotional comment makes students feel the teacher's care for him and is full of hope. This will gradually generate a strong interest in learning. 2. Comments can broaden students' thinking, form good study habits, and give appropriate inspiration, thus helping to stimulate students' potential and activate their innovative consciousness. For example, "one problem with many solutions" trains students to analyze and think from various angles and different directions, overcomes the unfavorable factors of fixed thinking, develops ideas, and uses the transfer of knowledge to enable students to correctly and flexibly solve ever-changing application problems. Students who affirm their unique views by commenting on "ingenious solutions and wonderful methods" have many solutions to some problems, while students only use one. You can write: "Is there a better solution?" "If you love thinking, you must have brilliant ideas!" . Such comments stimulate students' innovative consciousness, make students' brains wide open and their imagination gallop, and encourage students to think and find problems, put forward assumptions and verify, summarize and apply them; Make them dare to think and do, and encourage students to be innovative and try; Teachers should strictly control the writing, format and arithmetic process of students' homework. These are external standards that reflect good study habits. Pointing out the shortcomings in homework with appropriate comments in time can make students correct them quickly. For example, "You are smart. It would be better if you wrote better! " ""The result is correct, but the format is correct? " "Smart, you will find a simple way! "and so on. For students who make mistakes because of carelessness, we should first affirm their advantages, enhance their self-confidence, and then put forward hope and correct their shortcomings. For example, "move your stumbling block-carelessness, go forward!" """Make friends with your heart!" "Your handwriting is really beautiful. It would be best if the accuracy can be improved! " Or "Be careful, be sure!" In this way, on the one hand, it will not dampen their self-confidence, on the other hand, it will help them correct their bad tendencies and cultivate a rigorous attitude towards learning. Third, the evaluation should be diversified. A good homework is a comprehensive reflection of all indicators. The original grading system of excellent, good and passing is the same, and only pays attention to the evaluation of whether the answering process is correct or not. It is difficult to distinguish the completion of students' homework, which is not conducive to the cultivation of students' good study habits and the all-round development of all qualities. In order to help students understand the success or failure of homework and establish a correct public opinion orientation, they can grade on the original basis. For example, it can be represented by a, b, c, etc. Each level can be given a special meaning: "A" mainly depends on whether the basis of the problem-solving process is reasonable, whether the steps are complete and whether the results are correct; "B" mainly depends on whether the words, symbols and graphics used are correct, whether the writing is neat and whether the operation format is standardized; "C" mainly depends on whether there is innovation or not and whether you have your own unique opinions. In a word, correcting written math homework is a teacher's routine work. How to cooperate with teachers and students, do a good job of correcting, and make it "live", there are many places worthy of our consideration.