Smiling high school teacher talking to her students during a class in the classroom.
Students from behind attending a college lecture and using cell phones to take notes.
Mature teacher giving lecture to group of university students in the classroom.
Close-up of teacher holding a lecture to his student in the classroom.
senior lecturer holding book and showing one finger up
Close-up of professor giving lecture to group of college students in the classroom.
senior lecturer in empty lecture room holding laptop and looking at camera
University teacher giving lecture to group of students in the classroom.
Happy black female student in the classroom at the university looking at camera.
University aula with rows of chairs
Happy male student learning on a class at college classroom and looking at camera.
grey hair professor sitting in empty lecture room and looking at laptop
smiling senior lecturer holding clipboard and looking at camera
grey hair professor pointing on something at blackboard
African American college student learning during class in the classroom.
senior lecturer using tablet isolated on white
smiling grey hair professor standing with crossed arms
grey hair professor talking by smartphone and looking at laptop
Close-up of teacher giving lecture in the classroom.
Mature teacher communicating with college students in the classroom.
Close-up of unrecognizable professor giving lecture to his student at the university.
grey hair professor yawning in empty lecture room
Male student unpacking his backpack while preparing for a lecture at medical university.
smiling grey hair professor looking at smartphone in lecture room
Medical student packing his backpack after learning in amphitheater at the university.
Close-up of professor giving a lecture at university classroom.
close up view of arranged empty white chairs in conference hall
Empty university classroom
Close-up of unrecognizable university teacher giving lecture in the classroom.
grey hair professor stretching in empty lecture room
