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
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Caucasian male handsome student at University sitting at desk in front of teacher and asking question. Rear of professor speaking in front
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
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Back view on female professor at University lection talking and explaining material to multiethnic students in Woman teacher having speech
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Rear on young Caucasian female professor speaking at lection at University. Woman teaching at college and explaining information to students
A group of male and female students in a large auditorium of the University listen to a lecture by a Professor