I bought loads of different books and software for my daughter as she was struggling a bit. None of them was really helpful, but The GCSE Mathematics Book was. And is worth every penny I paid for it. It showed her where she was going wrong, and so helpful in nearly all of what she is studying, I cant praise this book enough. Save your money dont buy all the other stuff they throw at you, this is what they need. It was recommended to me by a private tutor and another Teacher. Top Marks.