Product Details
＋
Operation Ouch issue 4 is extraordin-AIR-y! In this issue, learn all about your amazing lungs and how they fill your body with oxygen, the teeny bacteria that live in your gut and help to keep your belly healthy, and fashion a fart factory! Plus, read all about the fascinating world of forensic science and how it helps fight crime, what your bones are made of, and why we cough. With brain-bending puzzles, experiments, and craft projects galore, this issue has everything you need to have a fart-astic time.
