behaviour
blackboard
cartoon
chalk
chalkboard
character
chemistry
children
class
class room
classroom
collection
desk
discipline
education
english
flat
geography
history
illustration
information technology
kid
knowledge
lecture
lecturer
lesson
man
math
pedagogue
people
person
physics
pointing
profession
professor
pupil
school
science
set
speaker
student
teacher
teaching
training
university
white background
woman
work
young
定額
Lecturers teaching in class. Set of school teachers standing at blackboards and whiteboards in classroom. Professors at chalkboards. Colored flat vector illustration. Men and women in teaching lessons, math, chemistry, english, geography.の素材 [FY310208105852]
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