Ключевые слова: blackboard, board, business, chalk, chalkboard, class, classroom, concept, create, creative, creativity, draw, education, goal, head, idea, ideas, incentive, innovation, inspiration, intelligence, lead, leader, leadership, learn, light, management, manager, motivate, motivation, occupation, positive, retro, shadow, solution, student, study, success, symbol, text, thinking, training, university, vintage, vision, white, winning, wisdom, word, workshop,