Ключевые слова: algebra, backdrop, backgrounds, blue, classroom, clip, computer, contemplation, education, element, exercise, fabric, formula, geometry, illustration, ink, instructor, learning, letter, list, math equation, math example, math sample, mathematical, mathematics, multiplication, multiplication table, notebook, number, paper, pattern, plan, repetition, school, science, seamless, set, sign, solution, subject, swatch, symbol, table, textured, times tables, wallpaper, wisdom, wrapping,