Ключевые слова: alphabet, art, baby, background, block, business, businessman, calculate, calendar, child, childhood, concept, construction, cube, cubes, design, discounts, education, elementary, font, fun, game, green, hand, isolated, learn, letter, number, numeral, object, one, play, preschool, ranking, school, second, shape, sign, square, symbol, text, three, toy, two, white, wood, wooden, word,