VisualTextEducation:Hi Brenda10,CASCO Classroom Challenging Maths 6 is useful when your child has acquired a certain level in her maths. Not all assessment books are useful for your child. As I mentioned, buying a SUITABLE assessment book for your child is better than just the packaging/marketing/hype-up or recommendation from others. Examine what your child really needs, then pick one that is suitable for her. If she is weak in problem sums and heuristics but strong in fundamentals, buying maths456 will not help much but the mathsheuristics book might be useful. Similiarly, if your child is weak in his/her fundamentals, buying mathsheuristics will not help but maths456 will be useful. If your child is strong in fundamentals/problems sums and looking for more challenging questions, the book you mentioned will then be suitable for her. You can contact me for help, will be happy to help though. Hi VisualTextEducationNoted with thanks.