I am sure Kinetic Books works for some families, but my ds and I just a had a meltdown over using this curriculum. Since my ds likes the computer, I was hoping that this curriculum would be a blessing to our family. I just assumed doing math with a computer curriculum would work for him. However, I hear more groaning from him over using this program than I had with using workbooks. I am so glad that they have a 30 day money back guarantee. Until we find something else, we will be sticking with "Key To" workbooks.