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, nineth place, number nine, outdoor, pitch, plastic material, play, playground, raveled, rubber, schoolyard, scotch, sport, square, stage, start, strip, surface, symbol, tilled floor, toss, training, wet, white paint, work out zone, yard,