Blackboard concept image
Palabras clave
blackboard,
concept,
blackboard,
chalk,
education,
board,
black,
background,
school,
blank,
empty,
write,
space,
class,
copy,
communication,
texture,
student,
old,
learning,
white,
message,
billboard,
advertising,
close,
drawing,
lesson,
note,
symbol,
text,
idea,
solution,
vertical,
teaching,
together,
instructing,
partnership,
strategy,
closeup,
smart,
creative,
copy space,
teamwork,
closeup,
to urbanize,
people,
dirty,
work,
copy space
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