I am a typical math idiot, and I feel that the sea tactics are very effective for ordinary students. If you are not good at math, I suggest you grasp the foundation.

Mathematics can't be divorced from each other, which is very relevant. If you skip one of the links, your future study will be affected.

Mathematics in the college entrance examination is really not too difficult. I suggest you study hard, otherwise it will be really difficult to get into your favorite school.