Ключевые слова: abstract, background, blue, book, concept, connection, design, digital, earth, education, educational, elearning, element, flat, geography, global, globe, graphic, illustration, information, innovation, internet, isolated, knowledge, learn, learning, line, linear, media, network, open, outline, page, planet, school, science, social, study, studying, success, symbol, teaching, tech, technology, textbook, university, white, wisdom, world,