40s
academic
alphabet
analyzing
assisting
back to school
beaker
blonde hair
boy
casual clothing
caucasian
chemical
chemistry
child
childhood
class
classroom
composite image
computer graphic
concentration
digital
digital composite
digitally generated image
discovery
dreadlock
education
elementary
elementary school
experiment
experimentation
female
flasks
girl
graphic
guidance
holding
illustration
innocence
intelligence
kids
knowledge
laboratory
learn
learning
lifestyle
looking
male
mature adult
microscope
mixedrace
molecular structure
molecule
practice
primary
protection
protective eyewear
research
school
schoolboy
schoolchild
schoolgirl
science
scrutiny
standing
student
studio shot
study
studying
symbol
table
teacher
test tube
test tube rack
together
white background
woman