boy

brother

child

childhood

cute

desk

discovery

education

examining

experiment

explorer

eye

find

forceps

friendship

fun

girl

glass

hand

help

kid

knowledge

lab

learning

lens

little

looking

male

microscope

objective

optical

people

person

portrait

research

researcher

sample

science

scientific

search

sister

slide

studying

subject

technology

tube

tweezers

using

white

young