If math is particularly poor, return to the textbook. The college entrance examination questions are all from textbooks. Since you are particularly poor at math, I think you know that you can't understand many general exercise books, so the textbook is the most suitable for you. However, you should really understand the textbook and don't float on it. You should understand every example and after-class problem thoroughly and carefully, so as to achieve real mastery. Finally, you should do several sets of college entrance examination questions carefully. I am also a science major in Shandong, but I took the college entrance examination in 2009. Come on, I wish you an ideal university. Come on! ! !