Ключевые слова: 3g, 4g, application, back to school, background, beard, bearded, blackboard, call, cell phone, chalkboard, classroom, college, communication, confident, connection, education, educator, experienced, face, formal, hold, knowledge, learn, learn technology, man, mature, message, mobile, modern, modern technology, pedagogue, phone, professor, school, schoolmaster, scientist, send, sit, smart, smartphone, study, teach, teacher, teacher pedagogue, teacher school, teacher teach, technology, university, use,