NatureStart Network brought together early childhood educators and environmental educators to support nature play, exploration, and inquiry for young children and their families within urban environments. Project partners included the Forest Preserves of Cook County and two established Head Start programs in the Chicago area, Mary Crane Center and El Valor. The foundation of the project was a series of three two-day professional learning sessions that took place over an eighteen month period. Through hands-on, collaborative learning and reflection activities, the participating educators