Complete solution of teaching materials
It depends mainly on parents' time to preview all kinds of teaching materials, but many parents in the workplace may not have time to help their children preview. In my personal experience, this kind of teaching aid is basically useless and wasteful.
recitation
Synchronous counseling book
The main function of synchronous tutoring books is to help students consolidate after learning a new lesson.
Parents often report that a supplementary book is too simple or has too few questions. This may be a misunderstanding of the function of the book "synchronous tutoring", which is used to help students consolidate, not the kind of difficult competition.
recitation
Synchronous comprehensive test paper book
Even if the school doesn't grade now, there are midterm and final exams. This kind of test paper book is very suitable for training.
Special category
Review books
There are two main topics in primary school mathematics, calculation and application. If students are weak in some aspects, they can choose relevant books as training books.