Interesting idea for putting a play area on asphalt, concrete or hard soil in a temporary build. The tires and rocks can be removed, and the sand and rocks swept up. Interesting idea for day cares in urban settings without access to grass or soil.
"EY FroTeachers- wow your kids and their parents this year- a small construction area- add construction vehicles, hard hats, blocks and pictures. We don't have to copy everything-but inspiration is a point that blooms new teaching ideas.