active activities adults adventure care children children’s playground climbing colorful colourful community enjoying enjoyment equipment families fun grass grassed area green greenery kids leisure parents park parks play play area playground playing playing fields recreation recreational safety sand sandpit shade shadows sheltered slides suburban sunlight sunshine supervise supervising supervision swings trees children’s-playground color colored coloring colors colour coloured colouring colours leisure-area multiple-activities opportunities parental-supervision play-equipment playcenter playcentre safe-play shelter toys under-cover variety youngsters