active activities appropriate-behavior appropriate-behaviour children children’s-playcenter communicating communication equipment fun informing inside interior kids leisure light limitations limited limits play playcentre playing red rides rules safety sign suburban warning white yellow adult-supervision adults monitoring parent-supervision parental-responsibility parents playcenter requirement supervision adventure children’s-playground climbing color colored colorful coloring colors colour coloured colourful colouring colours community families leisure-area multiple-activities opportunities parental-supervision play-equipment safe-play shelter sheltered slides supervise toys under-cover variety youngsters