Actually, this is normal. As soon as students enter high school, they generally feel faster, because it is very simple for teachers. Teachers all require progress, which is related to the teaching progress required by the team leader, but it will not be carried out after a chapter is finished. For example, the lesson plan requires that a chapter be written in half a month, which may be finished in one week. The rest of the time is mostly application and practice. Find problems in practice and consolidate them.
As for students' quick response, there are many reasons. There may be tutoring during the holidays. 2. Prepare adequately after class. There are more problems to be done.