1, try to reduce the decline in math scores, listen as much as possible if you don't understand, listen well, take notes, and at least be familiar with these questions, so as to lay a good foundation for future counterattack and overtaking.

2, fill in the short board as soon as possible, whether the function can't be understood, prove whether there is no idea, be aware of it, and can't ask three questions.

3. Online class, simple lectures and perfect knowledge system. The above is the remedy of 55 points in the second grade mathematics of key middle schools.