Why is outdoor play so important?
By letting children play outside, they are able to explore, learn about science, and see how nature works. Being outside also helps children learn how to work together to accomplish a common goal and promotes social interaction. Children being outdoors is also healthy for their bodies and promotes better sleep overall. Another advantage of being outdoors is the unlimited possibilities to learn.
https://www.naeyc.org/resources/pubs/yc/may2019/outdoor-play-is-essential