Male professor with face mask disinfecting tables after a class in lecture hall.
Black female student with protective face mask writing notes at lecture hall.
College classmates cooperating while e-learning during a class at lecture hall.
female college students with face masks analyzing their exam results in lecture hall.
Male student taking notes while learning during a class at lecture hall.
Mature student and his classmate talking to their professor after a class at lecture hall.
African American student feeling bored while attending class at lecture hall.
Mature professor and his students using laptop during a class at lecture hall.
African American student writing notes while attending class in lecture hall.
Back view of group of students raising their arms during a class at lecture hall.
Mid adult student using laptop during computer class at lecture hall.
Teacher with protective face masks talking to a group of university students in lecture hall.
Mature professor and his student using laptop during a class at lecture hall.
microphone on stage in business seminar, speech presentation, town meeting, lecture hall, conference
young businessman partneter share the future company plans to his employee in huge lecture hall
Mid adult professor with a face mask holding a class to his students at lecture hall.
Rear view of African American student raising hand during a class in lecture hall.
Mid adult black student writing an exam while attending a class at lecture hall.
Mature student raising his hand to ask a question during a class at lecture hall.
Happy African Americana woman attending computer class at lecture hall and looking at camera.
Black teacher with face mask assisting her student during class at lecture hall.
Mature teacher giving his adult students exam papers during a class at lecture hall.
Happy student communicating with his friend while wearing face mask on a class in lecture hall.
Rear view of black student raising her hand to answer a question during a class at lecture hall.
Mature professor using laptop while talking to group of students in the classroom.
Mature professor assisting his student on a class at university classroom.
African American chemistry teacher giving lecture in front of whiteboard in the classroom.
Mid adult student paying attention during lecture in the classroom.
Happy black adult education teacher with group of students in the classroom looking at camera.
Portrait of mature professor with protective face mask in the classroom.
