School blackboard
Palabras clave
blackboard,
blackboard,
chalk,
school,
inscription,
chart,
board,
class,
classroom,
childhood,
education,
elementary,
illustration,
information,
learning,
manual,
reading,
student,
study,
studying,
symbol,
teacher,
teaching,
youth,
alphabet,
college,
grade,
homework,
learn,
lecture,
lesson,
note,
number,
period,
primary,
quiz,
research,
material,
mathematic,
language,
work,
background,
writing,
back to school
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