Do you mean one or two? I study a second foreign language. Chinese is the People's Education Edition, and mathematics is Beijing Normal University. The first semester of the first grade of English is looklistenlearn, also called 3L. After the second semester, lookahead, who is difficult to learn, is full of expectations for the future. This textbook is very good, the content of learning is much more than the new curriculum standard, and it is very oral, which is especially good for oral English, but because you don't need to buy good Chinese materials and practice, you just need to fully understand the textbook for middle school students. No problem, but the explanation is very detailed. Every class in Chinese needs to buy exercises, so there is no need to buy them yourself. If you want to buy it yourself, you need to buy something about classical Chinese and reading. That's all that matters. In mathematics, I suggest you buy something glorious, such as "cuddling" explanation+questions and examples, as well as exercises, all of which are "points and points". That's a good question. English is mainly about buying exam questions and reading. As for the synchronization of classes, teachers will make their own arrangements and look forward to the future with their own exercise books. That's it. Good luck. This is all my experience in these two years! !