african

age

american

asian

black

boy

caucasian

child

children

class

classroom

clock

close

down

education

eight

elementary

ethnic

female

floor

girl

group

happy

hispanic

laughing

laughter

learning

lock

male

multi

people

preschool

preschooler

primary

pupil

school

schoolchildren

sitting

smiling

student

teaching

telling

the

time

together

years