NPR's Nancy Soloman visits McKinley Elementary School in Newark, N.J., where students have helped design a playground to be built this fall. It will have ballfields, a track, basketball courts, swings, jungle gym, a water spray, game tables and an outdoor classroom. Some of the children had never seen a swing set that wasn't broken. They went on field trips to other playgrounds to get ideas. The project is sponsored by the Trust for Public Land, which raises money from private donors.