Great little book. Basic math should be taught this way in all schools. The way we teach now creates problems with math for the majority of people. The United States is 24th in math scores world wide. What is insanity, doing the same thing over and over the same way and expecting a different result? That is what our educational system does. This book gives us a fun and effective way to teach basic math so our kids continue on to the more complex and fun stuff.