Awesome books! We love them so much that we’ve bought several sets so the kids can keep them in their rooms. They read them practically on a daily basis! Each book is based off of a more in-depth “adult” book and breaks the ideas down into a story format that is easy for the kids to grasp. We have been inspired to buy the original book that each one is based off of and read them aloud as a family, discussing as we go. We love all things Tuttle Twins!