answer
backpack
blackboard
boy
casual wear
caucasian
chair
child
children
collaborating
desk
education
epidemic
equation
face mask
female
female teacher
girl
glasses
hand sanitizer bottle
kid
male
math class
new normal
pandemic
participating
pen
people
person
pointing
preteen
prevention
protective mask
raising hand
reusable cloth mask
safety
school
schoolmates
sitting
student
teen
teenager
three
vertical
virus
young