Positive reinforcement.. From spending many hours on the playground
Child repeatedly kicks ball over fence.
One person might punish, ball taken away, or child told they could not play with ball for a period of time... Child resents what they enjoy being taken away, punishment finishes, playing football is not enjoyable now, hates football, kicks ball over fence again
Another person might call them over and say, "it's over the fence again? Oh dear, I've seen your amazing football skills, I think you can keep it this side if you try. Child runs off smiling and proud, ball doesn't go over fence again
Or child too rough with another child
One person might say, that's very naughty behaviour, you do not get a playtime now. Hitting is against the rules. Child internalises they are naughty and is rough again the next day because everyone thinks they are naughty anyway.
Another might say, OK, I think you should sit here quietly for a minute and then we will have a chat. Then when they are calm, ask why they were being rough, listen and understand their explanation, explain why they should be kind to their friends and to talk to you if they feel angry again. Ask them what the right thing to do is, send them off to say sorry, then make a point of passing them and giving them a friendly smile and a bit of encouragement so they know you are both on good terms.
Or child knocks another child over by accident and runs away.
One person might admonish them for being careless, point out the damage they had done or punish them for running off.
Another might say, oh dear, how did this happen? (after soothing hurt child) what's the right thing to do if we have an accident? We should make sure that the person we hurt knows we didn't mean to by saying sorry and then we should go get them some help from an adult. Why don't you look after your hurt friend till they feel a bit better..
Basically