We have to come up with our own field day "center" for each group t travel to. The outdoor activity should take 30 minutes to complete. It can be a competition or just an activity. For instance, I know one class is doing a competition relay, each child fills a measuring cup with water from one end, runs to the other end to dump the water in a bucket...the team with the most water at the end wins. Not sure what other classes are doing...but, any ideas (entertaining...maybe even educational!?) for us?