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Young teacher and student doing exercise on blackboard
Keywords:
men
education
teaching
adult
child
women
indoors
teacher
blackboard
standing
student
formula
classroom
back
mathematics
portrait
learning
seminar
focus on foreground
two people
studying
caucasian ethnicity
frustration
problems
young adult
school building
professor
childhood
mathematical symbol
arguing
intelligence
school children
visual aid
solution
girls
boys
exercise blackboard
student aid
teacher and students
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