A group of farmyard animals illustrate the action of force and motion.

"What do you know about pushes and pulls? Much more than you think! Read this book to find out all you know about pushes and pulls-- and to discover lots more."

You push a swing. Your brother pulls a wagon. Forces are at work all around you. But what exactly is a force? And how do forces act on different objects? Read t

Learn how things get moving and what makes them stop.

A simple look at motion.