2024071520
academic
algebra
background
blackboard
board
calculation
chalk
chalkboard
chemistry
class
classroom
close
college
concept
creative
education
element
example
female
formula
hand
handwriting
knowledge
learning
lecture
lesson
math
molecule
physics
problem
professor
research
school
science
september
smart
solution
solving
start
student
study
studying
task
teacher
teaching
theory
university
up
writing
定額
Close up of woman hand writing chemistry formulas on chalkboard, professor writes on blackboard or student solving task. Education and science concept.の素材 [FY310234108250]
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