Jane P. Perry writes that the playground is where children go to make sense of their world. The outdoors, with its flexibility in space and noise, where imagination is complemented by nature, children explore early peer-culture themes of life and death, danger and safety, and power and control. Follow Chase, Morgan and others in a "save the snail" game, read about how learning is a negotiation between the teaching and peer play cultures, and how active outdoor playgrounds can be perfect learning environments because they offer children the opportunity to direct their own initiative and inquiry.
Perry, J.P. (2008). Children's Experience of Security and Mastery on the Playground. In E. N. Goodenough (Ed). A place for play. Carmel, CA: National Institute for Play, 99-105.