Ключевые слова: atom, back, background, backpack, banner, blue, book, cartoon, child, class, collection, concept, design, doodle, education, element, elementary, energy, equipment, fashion, formula, graphic, hand, illustration, learn, line, math, molecule, notebook, object, paper, pen, pencil, physics, ruler, school, schoolbag, science, sign, sketch, stationery, student, study, supplies, symbol, technology, web banner, welcome, zipper,