Summary: I feel that the learning books in the picture book classroom are general. If only from the perspective of teaching AIDS, it is not as detailed as the complete answers of the teaching materials, and the content is not completely standardized; I didn't buy the exercise book "All Textbook Practice". I think one or two exercise books are enough.

I still recommend the exercise book Picture Book Classroom. Each class has two parts, one is preview, the other is review, especially the unit loves to recite the volume, which is a good summary. Lazy mother can start with it. It is also good to use "picture book classroom" exercise book with "complete solution of teaching materials"