Exterior space is the area that is outside of buildings or houses. Imagine you are playing outside in your backyard or at the park, that is exterior space. You can see the sky, trees, grass, and maybe some other people playing too. Sometimes you might see animals like birds or bugs outside. This space is important because it allows us to enjoy nature and get fresh air. It's like a big playground for us to explore and have adventures in. But we also have to be careful in exterior space because it can have dangerous things like sharp rocks or poison ivy. So it's important to listen to grown-ups and be safe while we play outside.