"Simple, vibrant illustrations and cutaway diagrams give readers an in-depth and engaging look at the brain, senses, nerves, and nervous system. This potentially complex information is made reader-friendly with humor, clever examples, and clear explanations."--

Just think - everything you do (and think!) - is handled by the extraordinary computer inside your head. Your heart beats more than once every second. Ber-boom. What happens to every yummy mouthful from the moment you chew it? How your muscles let you run, jump - or just stay still to read this book! Let the knowledgeable and funny Stickmen show you around - inside you and out! Along the way you'll discover the longest and strongest muscle, how poo...

Features sound-related science projects, including using a spring to show how sound waves work, measuring how fast sound moves, and making a paper cup phone call.