I still failed in math in the third grade, which shows that the foundation is very poor. There is only one year before the senior high school entrance examination, so this is a very troublesome problem.

If you want to improve mathematics to an excellent level through this year, it is unrealistic. All your goals should be based on a good foundation and strive to reach an excellent level. Otherwise, you will be very embarrassed. So how to reach the excellent level?

You should find a more reliable training institution, one-on-one tutoring in mathematics, which is a model of one teacher and one student. In this way, you can brush the questions to check for leaks and fill gaps, and then brush the questions to consolidate.