Bacon said: "habit is a tenacious force, it can dominate life!" " Due to different habits,

It either makes a person or destroys a person. "Obviously, it is very important and necessary to form good habits." The Mathematics Curriculum Standard points out that in order for students to learn valuable mathematics, and to bring questions and ideas into the mathematics classroom, in fact, this requires students to preview before class. Pre-class preparation refers to students' independent learning of new content before learning new lessons, which is the prelude and overture of classroom teaching. Preview on the basis of students' cognitive level and existing knowledge and experience can stimulate students' enthusiasm for learning, provide them with opportunities to fully engage in mathematical activities, help them understand and master basic mathematical knowledge, skills, mathematical ideas and methods in the process of independent exploration, and gain rich experience in mathematical activities. Cultivating students' habit of previewing before math class is also the premise of constructing "students' active learning classroom" teaching mode under the new curriculum reform. Therefore, teachers, as organizers, guides and collaborators of mathematics learning, should cultivate students' good habits of preparing lessons in mathematics, teach them correct methods of preparing lessons in mathematics, make them actively and consciously participate in the whole process of mathematics teaching, and finally become people with strong self-learning ability and innovative spirit. Personally, I think that if we want to cultivate the habit of previewing math classes for primary school students, we should start from the following aspects:

First, change ideas and attach importance to preview.

First of all, teachers should attach importance to students' preview, and don't think that students will not experience the confused, operational, comparative, analytical and comprehensive thinking process with teachers and taste the satisfaction and pleasure of exploring success together. Because preview is the process of students' independent participation and acquisition of knowledge, and it is one of the important ways to cultivate students' independent learning and improve their self-learning ability. Wei Shusheng, a famous educator, once said: "Students can understand 99% of the textbooks through materials, and teachers only play the role of 1%." The ratio of 1% to 99% may be exaggerated, but at least it shows a truth: without a certain range of activities, people can't accomplish important things, and the sprout of children's autonomous learning consciousness and motivation must thrive in open learning activities, and the first step of autonomous learning is to learn to preview.

Secondly, teachers should also make students aware of the importance of preview. Teachers can not only tell students the benefits of preview in theory, but also infiltrate the important role of preview in specific mathematics learning activities, encourage students to preview mathematics, and make them gradually realize that the formation of preview habits is very important for their lifelong learning and development.

Second, stimulate interest and be willing to preview.

Curriculum standards stipulate:? Interest is the best teacher for students. In order for students to have efficient learning methods and scientific learning attitudes, it is necessary to start from students' interests. Vivid, intuitive and interesting learning will stimulate students.

Summary of courseware teaching plan exercises in primary school grades one, two, three, four and five.

The desire to learn. ? Preview this learning activity is no exception, it is an individual and conscious activity. To carry out this activity requires a strong interest in learning and correct learning motivation.

(1), introduced in the preview activities? Competitive consciousness? . For example, how many competitions are selected once a week? Preview the little expert? (or? Preview the little star). You can also let students who are particularly good at previewing be small teachers in class and organize the report activities of the whole class. In this way, students will reflect on their own preview methods in the process of communication, learn from each other's strengths and improve their preview ability; In addition, students get a successful experience, which stimulates their interest in preview.

(2) Encourage students with inspiring language. For example, when students are given homework, they say:? I think who is the little expert (or' little star') in the rehearsal! ? When checking the preview effect, I found that the previewed classmates would annotate him in the preview book:? You are such a good thinking boy! The rehearsal was a success. Keep up the good work! ? If you find that students have made progress, you should also praise them in time. For example, how serious the preview is! Use your head more, and you can be a little teacher! Keep working hard, the teacher believes you can do it! ? Wait a minute. In addition, well-prepared students can show their homework in the Taiwan Province experience, and the preview method can be told to students. Let students constantly experience success and build self-confidence.

(3) Establish an appropriate reward mechanism. Teachers can give appropriate rewards to students who have prepared well or made progress in preparation, and can also stimulate students' interest in preparation. Give them awards? Star of wisdom? If you accumulate a certain amount, you can give them some prizes.

Third, teach it to fish and learn to preview.

1, reasonably arrange the preview content. When students begin to preview, they don't know where to start. At this time, teachers should design preview tasks, so that students can preview with tasks, so as to be targeted and targeted. This requires teachers to analyze their students' learning situation, combine the characteristics of teaching materials, carefully study relevant learning content, and put forward preview content that is both valuable and attractive and can arouse students' strong preview interest. The most important thing is that the content of the arrangement should be hierarchical, so that students can preview, think and solve problems.

Three levels of problems: students with learning difficulties only need to read carefully to know what we are going to learn in the next lesson and what it looks like; Most middle school students should think about why this level is like this. Top students should think about what they can do and whether there is a better way on the basis of two levels. For example, the preview content of "perimeter of rectangle" is arranged as follows: ① Talk about the characteristics of rectangle and understand the meaning of perimeter. ② Master at least one calculation method of rectangular perimeter. ③ How many methods are there to calculate the perimeter of a rectangle? Which is the easiest? Students with learning difficulties only need to complete the first question, students with medium level can complete the first and second questions, and the third question is a higher level, mainly for gifted students.

2. Choose a suitable preparation method. Because students are young and lack of experience in acquiring knowledge, it is very important to give them scientific guidance on preview methods, which is directly related to the success or failure of preview and the formation of preview habits. (1), Preview of Mathematics Concept Course

Let the students draw and circle the main points and contents of knowledge on the basis of reading the new lesson. In this process, students can perceive new mathematics knowledge as a whole, draw a picture, circle the concepts and conclusions that they think are important, and make the main contents of the new lesson appear, thus attracting their attention and preparing for further understanding and mastering new knowledge.

1) Give examples to understand the concept. Mathematical concepts are not created out of nothing, but abstracted from the concrete real world. Of course, we can find the prototypes of these concepts around us. For example, when previewing the operation law of multiplication, let students give some concrete examples to illustrate the concept, which can help students understand the concept intuitively.

② Hands-on practice to feel the concept. Hands-on practice, independent exploration and cooperative communication are important ways for students to learn mathematics. Students should also guide students to understand mathematics knowledge through hands-on practice when previewing. For example, when previewing the sum of internal angles of triangles, let students cut and paste and spell, so that students can not only be interested in mathematics learning, but also naturally understand and master the knowledge that the sum of internal angles of triangles is 180 degrees. ③ Clever use of contrast to analyze the relationship. In the study of mathematics, comparison is a very important and frequently used learning method, and so is preview. For example, when previewing decimal addition and subtraction, let students compare calculation rules, operation rules and some problems that should be paid attention to with integer addition and subtraction, and find out their differences and connections. This not only reveals the relationship between old and new knowledge, but also helps students form a knowledge network. (2) Preview of the course of mathematical calculation

1 understand the example. Whether it is a new textbook or an old textbook, the calculation method will be presented in the form of examples in the arrangement of calculation courses, which provides a platform for students to preview. Students can master these methods to a great extent through preview. In class, we can concentrate on solving problems that students have not solved in preview, and we can learn more deeply and widely.

② Summary algorithm. There is more than one way to solve many practical problems. Students should think about different problem-solving methods, optimize algorithms and gradually improve their logical thinking ability in preview.

② Try to practice. By trying to practice, students' preview effect can be tested, which is indispensable for math preview.

There are few processes. Students have initially understood and mastered new mathematics knowledge through their own efforts, so students should test their preview effect by doing exercises or solving simple problems. It can not only make students reflect on the loopholes in the preview process, but also let teachers find the key issues that students pay attention to when learning new knowledge, so as to grasp the important and difficult points in classroom teaching and explain them.

(3) Preview of math operation class

The implementation of the new curriculum requires students to learn mathematics knowledge, not only to know why, but also to know why. Only when students have experienced the process of forming mathematical knowledge can they know why. It is inevitable to do it by themselves and try it by themselves. Because there is hands-on content in the class, it is inevitable to be familiar with the teaching materials, understand the tools and materials needed in the operation process, and make preparations before class. For example, when teaching statistics, let students count the family expenses for one month. At this time, we can take it as preview content and let them finish it before class.

Fourth, timely evaluation to promote preview.

Teachers should check, evaluate and give feedback to students' preview process in time. The ways of checking are: checking students' preview books, asking questions before class, asking questions in class, and asking students to answer a few small questions in writing. No matter which inspection method is adopted, the preview situation should be evaluated in time after the inspection to promote the next preview. This will not only greatly promote students' preview habits, but also facilitate teachers to adjust classroom activity plans in time and improve classroom teaching efficiency. For example, when teaching "Find the divisor of a decimal", I asked the students after introducing a new lesson: "What did you preview? What problems have you solved yourself? Where else is there a problem? " Next, I will let them communicate and help each other in the group, that is, share the harvest of preview with the students in the group and discuss the existing problems together. Then let each group send representatives to the stage to report their study. In this way, teachers can understand students' understanding and mastery of the content of the textbook according to the enthusiasm and fluency of students' classroom speeches, the quantity and quality of "questions" and the level and logic of explanation, supplement important and difficult knowledge in time, solve the problems still existing in students' study in this class, and evaluate students' preview before class in time and accurately. In this class, students think much, talk much, communicate much, experience much, and give full play to their personalities. They realize the glory that preview brings to him, and they no longer regard preview as a dispensable thing.

Fifth, always make unremitting efforts and persist in previewing.

Habit is a behavior that is not easy to change. Good preview habits can be formed not only through repeated training, but also through long-term training. As the saying goes, "A fist never leaves his hand, and a song never leaves his mouth." To form a habit, we must go through repeated training, which requires teachers and parents to unite in many ways, make unremitting efforts and persevere, and let them start from bit by bit and accumulate constantly to form a habit. Otherwise, you can't form good habits when you are exposed to ten colds.

Good habits will become a signpost for students on their way forward and a source of happiness for students all their lives. Students should develop the habit of preview, improve their self-study ability and exploration ability to meet the needs of the times. An educator once said: "Preview is a reasonable' preemptive strike'". Once students master the preview method, they take the lead from the beginning, which is helpful to form a virtuous circle of learning, change learning into initiative, cultivate students' independent thinking ability and develop good learning quality.

In short, it is a long-term and arduous teaching task to cultivate students' preview habits, but as long as students insist on preview exercises and teachers and parents give scientific and patient guidance and supervision, students' preview level will continue to improve and good preview habits will continue to develop!