Ключевые слова: activity, adhesive, amusement, chalk, child, childhood, cipher, court, distance, drawings, education, elastic material, elementary school, exercise, fiber, fun, game, gray, ground line, gymnastic, hop, hopscotch, jump, marking, meter, number two, outdoor, pitch, plastic material, play, playground, raveled, rubber, schoolyard, scotch, second, sport, square, stage, start, strip, surface, symbol, tilled floor, toss, training, wet, white paint, work out zone, yard,