A young teacher writing on whiteboard during lecture with students in classroom.
4k
60s
academic
age
caucasian
class
classmate
classroom
college
course
education
elder
elderly
group
happy
indoor
knowledge
learn
learning
lecture
lesson
man
mature
old
pensioner
person
retired
retirement
school
senior
student
study
studying
teacher
third
university
white board
woman
women
write
young
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