Ключевые слова: active, activity, balance, blade, blades, boy, child, cones, enjoy, family, fun, grandfather, grandson, happy, helmet, instructor, kid, knee pads, learning, little, man, old, outdoor, pads, park, people, protection, protector, recreation, ride, road, roller, roller skates, roller skating, rollerblading, rollerskates, rollerskating, run, safe, senior, skate, skater, skates, smile, sport, sportive, sporty, summer, teaching, young,