On Friday we went to a homeschool 'Nerf War' at a nearby picnic area. From a rough count, we had about 20 kids there - ranging in age from 5 to 15 (they wouldn't stand still long enough to count them!). The kids organised themselves into teams, worked out the rules and went hard for around 1.5 hrs - until we were washed out by a thunderstorm.
It was great fun and the plan is to hold them more regularly. PDHPE (physical education) - check! Socialising - check! Working in teams - check! Having heaps of fun - double check!!