Helping teach my children to behave in public.....?

let them be kids! unless they are really misbehaving and being disrespectful, dont restrict play. are you afraid he will hurt himself by running in the house?....guess what when you are not there he will run in the house. and guess what he is going to get hurt...all kids do....let them enjoy themselves, for soon they will be grown adults and going online to ask strangers questions about how to raise their kids