Helicopters come in many shapes and sizes and help people in a variety of ways. Helicopters examines the history of these vehicles and explores how they are used today. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Kids Core is an imprint of Abdo Publishing, a division of ABDO.