First of all, the child's math performance is too poor, so parents can communicate with his class teacher and math teacher more, and seek solutions from the teacher by phone or face to face. The teacher has taught so many students that there must be effective ways to improve their math scores.

Moreover, parents and teachers work hard and children can't be idle. They went to the bookstore to buy some exercises, and at the urging of their parents, they found out where the children's loopholes were. Then let him review the knowledge of those chapters carefully in the winter vacation, and then complete the exercises of the relevant chapters in the workbook to test the degree of review.

The above is based on your question and my experience. I hope my answer can help you and make you satisfied.

Finally, I wish you all a happy New Year and a happy family.