The fifth-grade child can only get 70 or 80 points, which means that he can't learn a lot of basic knowledge. Therefore, he must urge his children to study, and can't take it lightly, otherwise their grades will get worse and worse. Dictate new words, phrases and sentences to children every day, let them recite the text, and then dictation paragraph by paragraph, so that children can do more reading training and improve their comprehensive ability. Mathematics is also a child's weakness. Let the children see what they can't do and outline it. You can ask a tutor to tutor your children, so that the teacher can ask more similar questions and train them. The children's grades should improve soon.