In this engaging biography, readers will learn about the developer of the yo-yo, Pedro Flores. Follow the story of Flores as he popularizes the toy through his Yo-Yo Manufacturing Company then teams up with Donald F. Duncan to create the Duncan yo-yo! Along the way readers will learn how yo-yos are made and how to "walk the dog." Sidebars, historic photos, and a glossary enhance readers' understanding of this topic. Additional features include a table of contents, an index, a timeline and fun facts. Aligned to Common Core Standards and correlated to state standards. Checkerboard Library is an imprint of Abdo Publishing, a division of ABDO.