This title introduces readers to some of the most exciting moments in gymnastics history, such as Olga Korbut's Korbut Flip, Nadia Comaneci's perfect 10, and Simone Biles's Yurchenko double pike vault. Large, dynamic photos illustrate easy-to-read text, Xtreme Facts give additional information, and an Xtreme Challenge quiz shows what readers have learned. Aligned to Common Core standards and correlated to state standards. A&D Xtreme is an imprint of Abdo Publishing, a division of ABDO.