biology
blackboard
boy
cartoon
character
chemical
chemist
chemistry
child
children
class
classroom
coat
cute
doctor
education
elementary
equipment
experiment
flask
girl
glass
hair
head
illustration
inventor
kid
lab
laboratory
learn
little
man
microscope
physics
preschool
red
research
school
science
scientific
scientist
smart
study
studying
teacher
test
tube
white
young