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, Making Schools Work: Bringing the Science of Learning to Joyful Classroom Practice (2022), "Active Learning: 'Hands-on' Meets 'Minds-on'" (2021, Science), “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)