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Knowledge and culture are each dynamic. Teaching changed. Man bearded tutor in classroom. Main task in teaching. Formal education. Classic subjects learning. Improve teaching skills. Mature pedagogue
Keywords:
men
education
teaching
adult
book
indoors
caucasian ethnicity
teacher
blackboard
businessman
suit
smiling
looking at camera
classroom
beard
portrait
professor
learning
one person
looking
senior adult
standing
student
dynamic change
knowledge skills
professor formal portrait
subject blackboard
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