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, sport, square, stage, start, strip, surface, symbol, the second, tilled floor, toss, training, wet, white paint, work out zone, yard,