An extension of the Groovy Tube Book line, this series engages younger kids with a fictional story that explores the book"s topic while educating them with age appropriate fact sidebars. Chunky toys store in the spine. Perfect for hours of imaginative play!Grab your hard hat and get to work--it"s time to start building! Kids join a busy construction crew as they learn about all the rough and tough construction vehicles and the different jobs they do.