Medium shot of middle-aged teacher of mathematics standing at blackboard with equations written on it and explaining topic to students during lecture at university
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
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
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
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
Medium portrait of confident teacher of Mathematics explaining formula written on blackboard
Handheld shot of multi ethnic group of students standing in lecture hall and talking to middle-aged professor seen from his back
Tracking shot of multi ethnic group of university students seen from their back raising hands to answer teachers questions during lecture on mathematics
Medium portrait of college teacher of Mathematics sitting at desk in front of laptop explaining subject to students during online lesson