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