Knowledge is trivial, and the meticulous deepening of various types of knowledge points is conducive to cultivating students' keen and rigorous thinking, and they can deal with more subtle problems both in life and in exams. In the process of teaching, teachers should deliberately explain and practice the knowledge points in detail, analyze the problems that are easily overlooked in detail, and remind students of the habit of not doing problems seriously in order to deal with the "trap" in the exam. The details of mathematical knowledge are mainly the characteristics of graphics, such as the properties of triangles, the application conditions of the theorem of angular bisector, the knowledge of central symmetry and axial symmetry; The application conditions of the formula, such as the determination of two roots of binary linear equation; The concrete application of tangent theorem is the detail that students need to master, and it is also the main point of knowledge points.

Second, flexible teaching methods, good at applying knowledge points

The practical application of knowledge points is the ultimate goal of our teaching, but ordinary teachers will think that mathematics, a highly theoretical subject, is more suitable for imparting knowledge points in class, which will inevitably cause pressure and burden on students' learning. Linking the knowledge point of mathematics with daily life can make students feel the practical value of mathematics, and applying the knowledge point to practice can enhance students' impression of this knowledge point.

Third, improve efficiency and summarize the main points of knowledge.

The induction and arrangement of mathematical knowledge points is the key link in learning mathematics. Students must consolidate basic knowledge in order to change various learning methods on this basis. What teachers should do is to improve teaching efficiency, pay attention to the induction and summary of knowledge points, and let students master knowledge points in an all-round way and use them flexibly in doing problems. For example, there are many trivial knowledge points about the relationship between edges and angles in the proof and operation of geometric figures; Steps to solve the parallelogram problem: add auxiliary lines; Application of triangle center; The application of midline theorem, etc. These knowledge points can be easily forgotten or confused if you don't pay attention. Teachers should help students sort out the knowledge points of various problems according to specific topics.

Four. conclusion

Mathematics teaching in junior high school under the background of new curriculum standard reform is more creative and can attract students to study hard. The focus of mathematics knowledge needs the unremitting study and sharing of all front-line teachers. This paper simply expounds the grasp of knowledge points in junior high school mathematics teaching, and the deeper knowledge needs the efforts of colleagues.