Junior high school mathematics knowledge is less, shallow, easy and comprehensive. High school mathematics knowledge is extensive, which will promote and extend junior high school mathematics knowledge and improve junior high school mathematics knowledge.

2. Differences in learning methods.

(1) The classroom teaching in junior high school is small and the knowledge is simple. Through slow-paced classroom teaching, we strive to make all-round students understand knowledge points and problem-solving methods. After class, the teacher assigns homework, and then repeatedly understands the knowledge through a lot of in-class and out-of-class exercises and out-of-class guidance until the students master it. With the opening of many courses, senior high school math teachers will have at least eight classes every day, and four classes will be used for self-study, so that the study time of each subject will be greatly reduced, and the amount of extracurricular problems assigned by teachers will be reduced compared with junior high school, so that the time for concentrated math learning will be less than that of junior high school. Senior high school math teachers will not be able to supervise every student's homework and extracurricular exercises like junior high school, nor will they be able to let every student master knowledge before taking a new lesson like junior high school.

(2) The difference between imitation and innovation. Junior high school students imitate doing problems. They imitate teachers' thinking and reasoning more, while senior high school students imitate doing problems and thinking. But the knowledge is difficult and extensive, so it is impossible for students to imitate them all. Even if students imitate training to do problems, they can't develop their self-thinking ability, and their math scores can only be average. At present, the purpose of mathematical investigation in college entrance examination is to examine students' ability, avoid students' high scores and low energy, avoid thinking stereotypes, advocate innovative thinking and cultivate students' creative ability. A large number of imitations of junior high school students have brought unfavorable mentality to senior high school students, and their conservative and rigid concepts have closed their rich anti-creative spirit.