The Pennsylvania Land Trust Association produced the 2014 publication Nature Play: Nurturing Children and Strengthening Conservation Through Connections to the Land. Authors Ken Finch and Andrew M. Loza explain how nature play enhances children's cognitive and emotional development. On pages 30 and 31, they provide lists of age-specific nature-related activities for children. Finch and Loza explain the connection between immersion in nature during childhood and the decision as an adult to serve as a steward of the natural world. They discuss the importance of unstructured nature play, along with the design of natural playscapes. The publication also addresses safety and liability concerns.
Finch, Ken, and Andrew M. Loza. Nature Play: Nurturing Children and Strengthening Conservation Through Connections to the Land. Harrisburg: Pennsylvania Land Trust Association, 2014. Copyright 2014 Pennsylvania Land Trust Association.