Kids these days are more competitive than ever. It's all about getting first place and being the best at everything they do. You can use this competitive streak in them to educate them that sticking together as a group is more important than victory. Conduct races like baton relays, wheel barrows etc. and pop quizzes in teams, or involve them in these
group games which will show them that winning is important, but not as important as sticking together as a group.