2. Let children develop different interests. Many times, 7-and 8-year-old children feel that they are very idle, and after finishing their homework, they want to make trouble. Therefore, parents should enroll their children in interest classes, or buy roller skates for their children, so that children can practice roller skating according to their own interests. Children who like playing football can be encouraged to play more football. By developing children's different interests, they can not only strengthen their physique, but also make them stop crying and causing trouble.