We have the entire collection of Tuttle Twins books. I like the way they present an idea and tell the story in an easy to understand way for kids. It sparks questions and discussion between me and my 9 year old. Reading the books together makes me take the time to bring up an important topic that I might not have otherwise made the time for, or know the best way to discuss a topic. I appreciate having a resource like The Tuttle Twins.