1, lack of scientific learning methods. Middle school students, young, poor in learning autonomy, often attend classes and finish their homework after class. There are no scientific learning methods such as preview before class and review after class, trying to find the best solution, summing up, summarizing, popularizing and extending after solving the problem. If we don't pay attention to the understanding of mathematics, but focus on the definitions, formulas, theorems and even problem-solving in textbooks, there will be nothing we can do if the conditions change slightly. If you don't compare what you have learned, you are not good at sorting out and summarizing, your knowledge is loose and messy, and your understanding is not profound, you will often make mistakes such as (a+b)2=a2+b2, sin(A+B)=sinA+sinB, which will affect your mastery of mathematical knowledge.

2, weak will, can not control themselves to persist in learning. Some poor students are timid when they encounter a large amount of calculation, complicated calculation steps, or a failed attempt, even a difficult problem and a long topic, and lack the perseverance and confidence to overcome difficulties and self. Even because they are playful and tired of learning, they can't resist the temptation, so they can't control themselves to stick to their studies.

3. Strong sense of inferiority and self-abandonment. Influenced by teachers, parents and senior students, some poor students are afraid of some math knowledge before they come into contact with it. Once he comes into contact with this knowledge, he will give up on himself if he is not careful, thinking that mathematics is not something he can learn well by himself, and finally give up his confidence in learning mathematics well. For example, the function problem and the introduction of solid geometry in the first semester of senior one make some students feel scared until they give up studying.