Ключевые слова: 7, advertisement, anniversary, arranged, assorted, baby, background, birthday, blocks, build, celebration, child, children, connection, construction, create, creativity, cube, designer, development, education, element, entertainment, event, festive, figure, fun, game, geometric, idea, kid, kindergarten, layout, learning, leisure, math, number, number 7, numeral, plastic, play, preschool, school, shape, sign, template, text, thinking, toy, training,