Who discovered penicillin? How many bones are in an adult body? The contents of this box—an atlas, 40 quiz cards, a 500-piece puzzle, a 3D model—provide the answers to these questions and many more. It's all designed to help children discover the secrets of the human body in a fun and interactive way. Pull a quiz card from the pile and find the answers in the atlas, then assemble the puzzle and build the model to reinforce what they've learned. Ages 6+.