evels of America's most popular sport, from youth games all the way up to the National Football League. Readers will be introduced to the skills required for each position and ways to play the game safely. In addition, readers will learn football's history and the iconic players who have made it such a staple of US culture. Features include a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Early Encyclopedias is an imprint of Abdo Reference, a division of ABDO.