From laughing to cooing, from sneezing to yawning, join baby in discovering what expressive eyes, noses, and mouths can do.

From tummy time to snack time, from burps to giggles, join baby in discovering what round little bellies can do.

"How much do you know about your bones? From supporting your body to protecting your organs, it's time to explore bone basics and more. Look inside to discover incredible facts and stories about how your bones work-and what happens when they don't! This book includes a table of contents, glossary of keywords, index, author biography, sidebars, and health tips"--

"How much do you know about your heart? From pumping to sending blood around your body, it's time to explore heart basics and more. Look inside to discover incredible facts and stories about how your heart works--and what happens when it doesn't! This book includes a table of contents, glossary of keywords, index, author biography, sidebars, and health tips"--

"How much do you know about your lungs? From taking in oxygen and getting rid of carbon dioxide, it's time to explore lung basics and more. Look inside to discover incredible facts and stories about how your lungs works--and what happens when they don't! This book includes a table of contents, glossary of keywords, index, author biography, sidebars, and health tips"--

"How much do you know about your muscles? From allowing you to jump to helping your heart beat, it's time to explore muscle basics and more. Look inside to discover incredible facts and stories about how your muscles work--and what happens when they don't! This book includes a table of contents, glossary of keywords, index, author biography, sidebars, and health tips"--