Ключевые слова: black, blackboard, board, chalk, chalkboard, class, classroom, community, computer, concept, conceptual, connection, connectivity, educate, education, educational, information, knowledge, leader, learn, lesson, management, message, network, school, seminar, share, study, teach, team, teamwork, technology, text, transfer, typography, vision, wisdom, wise, words, work, writing, written,