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.
Outdoor water and sand play! Water and sand play are very important pieces of learning because it helps children develop fine motor skills. Playing with the water and sand outdoors is good exposure. It allows them to connect their indoor activity to their outdoors.