Handheld shot of middle aged university professor pointing at blackboard when asking question to student during lecture
Medium shot of multi ethnic group of students raising hands to answer questions asked by smiling middle aged female professor in glasses during lecture at university
Middle aged curly haired teacher entering lecture hall, greeting multi ethnic group of students and starting lecture on calculus at university
Handheld shot of middle aged female professor in glasses delivering lecture to multi ethnic group of students at university
Handheld shot of middle-aged teacher of mathematics talking to multi ethnic group of students standing around him and answering their questions after lecture on calculus
Middle aged male teacher of mathematics drinking coffee and using laptop computer at work when delivering lecture on calculus to multi ethnic group of students
Front view of middle aged university teacher looking at students and using laptop computer when delivering lecture on calculus
Tracking shot of group of multi ethnic students sitting in lecture hall at university and listening to professor, one of them asking question
Handheld shot of middle eastern university professor with curly hair talking to multi ethnic group of students, who are asking questions about equations after lecture
Tilt up shot of multi ethnic group of college students sitting in lecture hall and listening to teacher, one of them asking question
Teacher of Mathematics asking question of group of multi-ethnic college students during lesson
Tracking shot of middle aged curly haired male professor talking to students when sitting in lecture hall at university