2
alphabet
background
black
blackboard
blank
board
business
chalk
chalkboard
child
class
classroom
concept
copy
copyspace
count
design
drawn
drawning
educate
education
exam
frame
hand
icon
idea
illustration
information
isolated
kids
learning
lesson
letters
message
pattern
pupils
school
sign
space
student
study
symbol
teach
teacher
text
two
white
write