The kindergarten play yard invites the young child to enter fully into joyful and increasingly complex play. The large sand area with large stones and running water creates opportunities to build castles, volcanoes, and rivers. The teepee is a secret meeting place and home base for tag games. The see saw, pirate ship, and swing set, each designed and built by Christopher Gray, bring the children together imaginative group play that enlivens and strengthens the social life of the class.