The importance of play for healthy development is undeniable. Aspects of play have been linked to the development of social skills, health and fitness, motivation, curiosity, innovation, imagination, and problem solving. Both theory and research suggest that play of various types is critical for healthy development and that playfulness is an important quality across the life span. However, opportunities to play and quality of play facilities in schools, after-school programs, childcare centers, community parks, and museums are not equitable by race, socio-economic status, and ability. And...