This is a complete course for children aged between 3 an 12 years of age or can be used as a refresher for children needing extra tuition for sats or to keep them on target during school holidays. I found this more useful than paying for tutoring lessons as you can go over subjects again. This could be resold once you have finished with it as I have. Thanks for looking. This cost well over £600 new so grab a bargain. Also none of the work books have been written in as we worked on paper.