Ключевые слова: 3d, algebra, background, black, blackboard, calculus, calligraphic, calligraphy, chalk, coding, cyber, data, division, drawing, education, effect, equal, finger, formula, greater, hand, handwriting, less, manuscript, mathematical, mathematics, minus, multiplication, pattern, physics, plus, programing, project, proof, render, sample, school, science, scribble, seamless, show, sign, slate, subtraction, symbol, tile, tracery, visualisation, wallpaper, white,