addition

back

behind

black

blackboard

board

caucasian

chalk

chalkboard

child

class

classroom

college

color

desk

digit

drawing

education

elementary

examples

female

figure

girl

grade

green

help

kid

learn

lifestyle

little

math

mind

number

people

person

pupil

school

schoolchild

schoolgirl

simple

solution

solve

student

teacher

think

two

woman

write

young

youth