Balanced and Barefoot : How Unrestricted Outdoor Play Makes for Strong, Confident, and Capable Children, Paperback by Hanscom, Angela J.; Louv, Richard (FRW), ISBN 1626253730, ISBN-13 9781626253735, Like New Used, Free shipping in the US

Argues that modern children need "rough and tumble" outdoor play for their cognitive development, asserting that nature is the ultimate sensory experience, and offers small things parents can do to help their children get the movement they need.