Ключевые слова: activity, background, blue, bright, childhood, children, color, colorful, development, empty, enjoyment, exercise, free, fun, game, green, happiness, happy, holiday, joy, kid, kindergarten, lively, nobody, outdoor, outside, park, plastic, play, playground, recess, recreation, red, safety, schoolyard, seesaw, setting, spring, structure, swing, toy, view, yellow,