Ключевые слова: background, blackboard, board, book, brain, bright, bulb, business, chalk, classroom, colorful, concept, creative, creativity, desk, drawing, education, genius, glowing, idea, illustration, imagination, information, innovation, inspiration, knowledge, lamp, learn, learning, library, light, light bulb, lightbulb, literature, object, paper, read, reading, school, science, scribble, sign, solution, space, stack, stack of books, study, success, table, wooden,