After three years, everything can change.
1. I also encountered the problem that you said you didn't have time after finishing your homework. I tried many methods, such as ignoring the teacher's arrangement, or using all available time to compress the time from dinner to recess, just following the teacher's arrangement and finally finding the most suitable one. I suggest you try, after all, everyone is different.
2, mathematics, it is recommended that you must listen carefully in class, and you must exercise your ability to take notes while listening. Before you do your homework every night, you should sort out your math notes for that day. You should consider every question carefully. If you can't figure it out, think after reading the answer. The title of this road is "How to solve this problem", that is, you have to find a key connection point. Mathematics means thinking more. One day, you suddenly understand and you can do it. In English, reading more is very important. In high school, Li Yang came to give a lecture. Our whole class used his method, and the average score of the exam increased by 4 points ... this is the average score of nearly 60 people. In fact, it is necessary to read aloud. Read some classic sentences and read more. Not only have a sense of language, but also composition and comprehensive scores can go up.
That's it in short. I hope to see you on the campus of Caida University in three years ~