SEE INSIDE HOW THINGS WORK

Have you ever wondered just what happens when you flush a toilet, or what goes on inside a light bulb? Do you want to know how a digger scoops up soil, why boats float and what keeps planes up in the air? Lift the flaps to see inside how things work--from everyday inventions to massive machines. Series: See Inside Board Books Packed with lively illustrations and fascinating flaps, these books are bursting to reveal amazing secrets.