Excellent series! The Tuttle Twins provide a solid educational base in civics, free enterprise, and the ideals that made/make the United States the greatest country in the history of the world. Strongest recommendation as a companion to elementary education, though older children (and even parents) could benefit as generations of social studies curriculum have failed to teach the principles of civic duty and Americanism. In the words of Ronald Reagan, “Freedom is never more than one generation away from extinction. It has to be fought for and defended by each generation.” The Tuttle Twins provide a large piece of that coat of armor.