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