apple
back
blackboard
board
book
chalk
chalkboard
class
classroom
college
color
concept
desk
educate
education
educational
elementary
food
fruit
glasses
green
high
idea
indoors
information
knowledge
learn
lesson
literature
message
nobody
note
object
pen
pencil
primary
research
school
snack
stack
study
table
teach
text
textbook
word