It depends on junior high school. On the first day, I suggested not to buy it first, to develop freely, and to let him play in his own field. Buy some exercise books after the second day of junior high school and focus on his suitable field. But the rest can't be put down. For example, if he loves to learn mathematics, he will attack mathematics 100% and others will attack according to the standard. Only in this way can his love for learning be effective. After the third grade, you can see that your basic arts and sciences are better, and then you can make a selective assault. In order to have a good effect. If he likes reason, he will double his research according to the standard of writing.

I recommend exercise books:

1, midpoint of point

2, three point one test

3、52045

4. Complete solution for junior high school textbooks

5. Wang Houxiong series. Over.