I was wondering which ones to get and the main differences between the revision, study, workbook etc and which would be best.
The purpose is to make sure dd understands what she is learning at school and to also have some practice questions.
Also, for an average child would you get the higher level to help them achieve this or just the normal. I think it's maths that offer higher.
I can't afford to buy all 3 books for all 3 subjects and know she wouldn't use them all anyway.