Ключевые слова: activity, background, basic, board, childhood, children, cogwheel, colorful, concept, connection, construction, design, development, education, element, elementary, engine, engineering, fun, fundamental, game, gears, idea, industrial, innovation, kid, learn, logical, management, mechanic, mechanical, part, play, process, progress, shape, solution, strategy, success, symbol, system, teamwork, technical, technology, think, toy, wheel, wooden,