Ключевые слова: abbrevation, blackboard, board, business, chalk, chalkboard, class, classroom, concept, conceptual, creative, creativity, daily, doodles, draw, drawing, education, explanation, highschool, illustration, imagination, inspiration, knowledge, learn, learning, lesson, live, living, love, marketing, motivation, school, science, scientific, sketch, student, study, success, symbol, teamwork, think, thinking, university, value, writing,