inscription plan in red chalk on a black chalk board and two options for solving the problem
Palabras clave
hand,
blackboard,
chalk,
blackboard,
board,
drawing,
write,
plan,
education,
message,
concept,
black,
handwriting,
solution,
instructing,
white,
presentation,
strategy,
business,
background,
lesson,
learn,
communication,
showing,
teacher,
idea,
pointing,
school,
learning,
planning,
adult,
connection,
alternative,
red
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