Unidel H. Rodney Sharp Professor of Education; Departments of Psychological and Brain Sciences and Linguistics and Cognitive Science, University of Delaware; Director, Child's Play, Learning, and Development Laboratory; Co-Author, “Brain Science and Guided Play” (2019, Serious Fun: How Guided Play Extends Learning), Becoming Brilliant (2016), Play = Learning (2009), and A Mandate for Playful Learning in Preschool (2008)