The uniquely positive core of play is that playing is so interesting that children solve conflicts extremely fast, when they are really absorbed by play. Because when conflicts start, play stops, and when play starts, conflict stops.
Children can only play when they are on friendly terms.
The playground which creates an environment for social interaction needs to consider all ages and abilities and take into consideration the diversity in play interaction:
The social-emotional, the physical, the cognitive and the creative play events and how they are best supported in the play equipment and by the playground design.