Preparing lessons is a teacher's job and a responsibility to students. There are always some math teachers who use textbooks to tell a few examples in class, and then students do several exercises before class. Students can't do the topic, discuss it by themselves, teachers who can't discuss it say, and so on. The students learned happily and the teachers talked with relish. When encountering a difficult problem, the teachers take pains to say it over and over again until the students understand it. Of course, some students don't understand and spend a lot of time unconsciously. However, if the math teacher can calm down and study the curriculum standards and math textbooks, he will find that the math curriculum standards have clear provisions for each knowledge point, and the requirements for each knowledge point are different. Some parts should be detailed and some places should be omitted, so as to reduce students' learning burden and improve learning efficiency.
At present, there are many kinds of junior high school mathematics textbooks in China, such as the New People's Education Edition, Beijing Normal University Edition and China Normal University Edition. However, no matter which version of the textbook is compiled, there is a unified standard, which is based on the Compulsory Education Mathematics Curriculum Standard (20 1 1 version) and compiled according to local characteristics. In other words, no matter what kind of textbooks are used, the requirements are the same, all textbooks are interlinked, the requirements are the same, but the order and content are different, and the core is the same. But different textbooks have different advantages and disadvantages. Careful study and comparison will reveal that each set of textbooks has its own characteristics and advantages. For example, the content of mathematics textbooks compiled by China Normal University is spiraling, and the content of each volume is improved on the basis of the previous volume, and the problem is solved according to the idea of easy before difficult. Students go through the process from understanding in grade one to mastering in grade two and then applying in grade three. Some mathematics textbooks all appear in the same kind of content in one textbook, which makes students' learning coherent. The solution of the same knowledge point is also different. If we can find several sets in specific teaching, and choose the appropriate content from different teaching materials according to the specific situation of students, the learning efficiency will be greatly improved.