What forms of transportation are used on land? How do ships stay afloat? Which aircraft don’t use wings to fly? The Do You Know? books provide an in-depth look at a wide range of popular subjects. Appealing to children who want to know everything, each thought-provoking book features: • 96 pages of informative content and answers to many popular questions • Hundreds of labeled, full-color illustrations • An index to key terms • A “More to Know” section that motivates children to explore further • Ages 5 to 8