answer
back to school
basic
beginner
blackboard
boy
boys
chalkboard
child
childish
class
clever
concept
count
counting
divide
doodle
education
elementary school
finger
formula
green
happiness
happy
holding
homework
intelligent
know
knowledge
learn
male
math
mathematics
minus
multiply
number
numbers
question
school
schoolchild
schoolwork
sit
smart
smile
study
success
table
touch
white
work