My daughter is in kindergarten and needs some math practice. This book helps us do that. I tried four math books and this one is the best. It is also the only one she could do. It has a good number of practice questions. One thing that is really good about this book and Argo is that the lessons have video tutorials. When I travel for work I can work the problems with her by Skype or Facetime. This enables us to plan a few precious minutes to interact when I am not home.