Handheld medium shot of middle-aged teacher of mathematics holding cup of coffee and having friendly conversation with multi ethnic group of students after lecture
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
Medium shot of curly haired middle aged university professor talking to group of students in lecture hall
Middle aged curly haired teacher entering lecture hall, greeting multi ethnic group of students and starting lecture on calculus at university
Medium shot of optimistic male lecturer sitting at desk and smiling when talking to group of students during lecture on mathematics
Tracking shot of middle aged woman in glasses delivering lecture to group of students of different ethnicities sitting in lecture hall
Tracking shot of multi ethnic group of university students seen from their back raising hands to answer teachers questions during lecture on mathematics
Tracking shot of middle aged curly haired male professor talking to students when sitting in lecture hall at university
Front view of middle aged university teacher looking at students and using laptop computer when delivering lecture on calculus
Middle aged female university teacher in glasses smiling and talking to multi ethnic group of students when asking questions during lecture
Medium shot of smiling middle eastern man holding takeaway coffee cup and talking to group of students before mathematics lesson, handheld