Both of them are fine. The knowledge of junior high school every day is explained in detail for the knowledge of junior high school. The questions are also difficult and easy to combine, which is very suitable for junior high school students to brush questions in primary schools. There are many problems that primary school students must do, which may be used in junior high school. Therefore, whether it is a compulsory exam in primary school or a daily exercise in junior high school, you need to buy it. I suggest you buy two books for your children.