Ключевые слова: 3d, 3d rendering, 4, background, blue, cards, child, childhood, collection, color, colored, concept, count, digit, education, elementary, fluffy, font, four, furry, game, hairy, illustration, isolated, kid, kindergarten, learning, lesson, mathematic, number, number 4, numeral, play, preschool, primary, pupils, school, soft, spinning tops, students, study, toy, training, whirligig tops,