This happens quite a bit. You want to do an activity in pairs and you have an odd number of players. The best way to solve this is to LET THE KIDS FIGURE IT OUT! In today’s society kids are told everything to do; how about giving them some responsibility? Nearly all activities that can be done in pairs would still work fine if their was an extra person, see if the kids can figure it out. If larger numbers are involved, say you want to play four versus four and you have nine, what about just playing five versus four. In the game of soccer their will be plenty of times where a team will have a numerical superiority (a lot of teams play with four defenders, four midfielders, and four attackers, if both teams play that system then the forwards are outnumber by two extra people). Another option would be to have one person play offense the whole time. If possible, we want to avoid having children sitting out of an activity doing nothing.