Kiev/ukraine - Jul 15 2015: Professor, Chemist, Biologist, Teacher is Holding the Lesson, Class, in Front of Students, Man is in White Medical Robe, in Glasses, Man With Mustache and Beard, Students Are in White Medical Robes, Teacher is Walking by Auditorium, Gesticulating, Talking to the Students, Discussion, Students Are Talking to One Another, Hall as Amphitheater, Rows, Seats, Wooden Desks, Indoors, Daytime, University