Caucasian male professor in standing and walking in front of students and giving lection. Man teacher explaining lesson subject in
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African American male professor standing in front of students and giving lection. Man teacher explaining lesson subject in auditorium. Close
African American professor giving a lecture and explaining lesson to students at University library
Experienced professor teaching math to students in university classroom
Medium shot of modern college teacher standing in front of students explaining subject to them
Teacher giving students a recycling lesson
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Close up from behind of female Caucasian professor reading a lection from papers and explaining subject to students at University. Knowledge
Senior professor explaining graph on chalkboard during math lesson, then looking at camera and smiling while giving lesson to college students
Male teacher in class room giving the subject using tablet
Medium shot of Caucasian male teacher giving programming lesson to group of students, standing in front of blackboard with schemes and formulas on it in garage classroom
Medium portrait of college teacher of Mathematics sitting at desk in front of laptop explaining subject to students during online lesson
Multiracial male teacher standing by whiteboard and giving presentation to female students during lesson in language school