Ключевые слова: black, board, boy, casual clothing, cellphone, child, childhood, class, classroom, closeup, communication, concentration, connection, cute, dreadlocks, education, elementary, elementary school, focus shot, happiness, holding, indoors, innocence, knowledge, learning, male, mobile phone, phone, primary, pupil, school, schoolboy, schoolchild, schooling, smiling, student, using, wireless,