Ключевые слова: 3g, 4g, application, brain, business, caucasian, chalkboard, class, coach, competence, computer, concept, director, distant, education, emotions, experienced, expert, formal, formalwear, glasses, informal, internet, leader, leadership, lesson, man, mind, modern, online, online education, platform, preparing, remote, school, self, senior, serious, software, start up, startup, teacher, think, thinker, thinking, thought, thoughtful, thoughts, using, wear,