1. Reasonable learning and thinking, structural optimization and more foundation can make children's basic mastery more solid. But it is difficult to practice 53 days a day, which is not suitable for ordinary practice. It is better to study and think.

2. Learn and think. Every question in the weekly exercise has extended questions and similar questions, so you can carry out targeted training. There are fewer extended exercises in 53 days, so it is better to practice learning and thinking every week.