When preparing to use the Playground Physics app, it is highly recommended that you reserve a large open space for the video-based activities. The optimal location would be an outside playground or schoolyard. Depending on your school, a walking field trip form may need to be filled out and approved prior (with parent signatures). This location is also weather dependent. I recommend using the app during the warmer months of the year. An alternative location would be the gymnasium (which you would have to reserve or discuss with the physical education teacher).