Mature professor and his students using laptop during a class at lecture hall.
Rear view of adult students attending education training class in 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.
Teacher with protective face masks talking to a group of university students in lecture hall.
Happy female college student during a class in lecture hall looking at camera.
Happy student taking notes during a class at lecture hall and looking at camera.
Happy mature man on education training class in lecture hall looking at camera
Mid adult student using laptop during computer class at lecture hall.
portrait of young attractive woman sitting in lecture hall, working on laptop, classroom
Happy mature woman on education training class in lecture hall looking at camera.
College student raising her arm to answer teacher's question in lecture hall,
Exhausted university student fell asleep while preparing for an exam in lecture hall.
Mature professor and his student using laptop during a class at lecture hall.
Teenage female student raising hand and looking upward in lecture hall with ballpoint pen
Happy black females student during a class in lecture hall looking at camera.
Two intercultural female students of university sitting on the first row by desk in lecture hall
Woman student reviewing papers in lecture hall with laptop highlighter smartwatch, copy space
Black professor giving exam papers to group of adult students in lecture hall.
Writing male student taking notes in notebook at university lecture hall, with pen and smartwatch
Male professor sitting on desk edge in empty tiered lecture hall, with wooden benches
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
a male caucasian person sitting and feeling tired in the lecture hall auditorium, overworking stress
Female student wearing face protective medical mask for virus protection at lecture hall
a male caucasian person sitting and feeling tired in the lecture hall auditorium, overworking stress
Male student wearing face protective medical mask for virus protection at lecture hall
Female instructor wearing face protective mask and helping male student at lecture hall
