The method has been purchased since the end of August for my daughter of 9 years who did not come out with its tables. A week later, she knew all about the fingertips and was the more serene shot to address the entry into CM1. She always 20/20 has its controls, and is never wrong in his calculations. In order or out of order, there is no problem. His younger brother who is in EC1 started tables too, and fared just as well as her sister. Really thank you for this method, which seems rather far-fetched at first, but it works and that's why we want!