addition
algebra
answer
arithmetic
beginner
blackboard
calculate
caucasian
chalk
chalkboard
child
childhood
class
classroom
clever
education
elementary
finger
girl
green
happiness
happy
indoors
knowledge
learn
learning
looking
math
mathematics
number
one person
pointing
primary
pupil
school
schoolgirl
schooling
side
smart
smiling
solution
solve
standing
student
study
studying
sum