20s
adults
amazed
asian
astonished
boy
chemical
chemistry
childhood
children
classmates
copy space
curiosity
day
disbelieved
diverse
education
equipment
excited
experiment
expression
facial
group
happy
interested
kids
knowledge
lab
laboratory
learning
lesson
looking down
man
mixed race
multiethnic
multiracial
openmouthed
presentation
reaction
school kids
schoolchildren
science
shocked
standing
study
surprised
teachers
vietnamese
waist up
woman