Theresa Purcell Cone, PhD, is an assistant professor in the department of health and exercise science at Rowan University in Glassboro, New Jersey. A co-author of the first edition of this book, she is a past president of the National Dance Association and has held numerous leadership roles in physical education. Stephen L. Cone, PhD, is a professor in the department of health and exercise science at Rowan University. He co-authored the first edition of this book with his wife and has served as AAHPERD president. Peter Werner, PED, is a distinguished professor emeritus at the University of South Carolina. His doctorate includes a specialisation in physical education for children with a minor in elementary education.