Ключевые слова: background, balance, bar, block, brick, build, buildings, business, chart, child, childhood, component, concept, construction, development, diagram, education, fall, fun, game, graph, grow, growth, increase, joy, kid, learn, metaphor, pile, play, playground, preschool, productivity, profit, progress, puzzle, risk, skill, stability, stack, step, strategy, structure, success, succession, tower, toy, up, wood, wooden,