Some activities should be with multiple people working with multiple people, not only does this build character and leadership skills but it helps with social skills which helps students communicate more so when students get upset with teachers they can walk away from the problem and not talk back instead of them taking there anger out on teachers this is why students get into trouble, they dont know how to walk away from a situation or they dont know how to accept defeat that they cant win a argument with an adult students shouldn't even be arguing with adults but sometimes they feel like there right and the teacher is wrong, students don't know how to communicate with there peers by having competitive activities they'll learn to walk away from a problem they'll eventually get tired of arguing or they'll accept defeat, although there's no guarantee teachers can always teach the students with competitive games like checkers or a thinking game they get beat to many times so they quit.