African American young male professor in speaking to students in auditorium and explaining material. University concept. Man teacher at high
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African American male professor in speaking to students in auditorium and asking question. Man lecturer at high school communicating with
Teacher speaking to students in high school class
Teacher speaking to a high school student in class
Teacher speaking to students in high school class
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Caucasian female professor at high school writing on blackboard while explaining math for students. University knowledge. Woman teacher
Student discussing lesson with professor in high school
Rear-view slowmo shot of male professor speaking in front of group of multi-ethnic university students sitting on turquoise stairs in library or auditorium
A group of male and female students in a large auditorium of the University listen to a lecture by a Professor
A group of male and female students in a large auditorium of the University listen to a lecture by a Professor
Top-view of high school or university students sitting by long wooden desks in auditorium having Maths lesson, looking at male mid-adult professor standing at blackboard while explaining new topic