Annie,
I love this idea! As a Middle School teacher, grades 6 - 8, our 6th-grade teachers really had to fight to earn the right for their students to have access to recess again. Even as an 8th-grade math teacher, I try to get my students outside to work especially when they are just doing some independent practice. We have one area outside our building where teachers can take their classes and it is often a race to reserve that spot when the weather is nice. My classroom is in the basement of a building that was built a very long time ago. It was actually the High School for our district originally. The windows are high up and you can not see anything except a concrete wall unless you stand right below the window and look upward. I have found myself lately encouraging my students to "Get outside after school. It's a beautiful day!" I am really looking forward to your finished product!