adult
boys
caucasian ethnicity
cheerful
child
childhood
classroom
communication
confidence
cooperation
desk
discussion
education
expertise
explaining
females
group of people
happiness
indoors
learning
lifestyles
looking
multiethnic group
occupation
people
place of work
professional occupation
real people
school building
school children
sitting
smiling
standing
student
success
teacher
teaching
teamwork
technology
togetherness
women
working
young adult
young women