The all-new deluxe bundle includes the first four books in the series - "The Inventor in the Pink Pajamas", "Noah's Treehouse", "Let the Games Begin", and "We're Going Green!" - as well as the recently released "Young Inventor’s Journal". In the main series, young readers can learn the fascinating backstory of the inventions that surround us every day. In the inventor's journal, they can explore their curiosity and create their own inventions. All five books come together in a handy inventor's box that makes it easy to be an inventor anywhere and everywhere.