academic
adult
anger
angry
boy
caucasian
child
children
class
classmate
classroom
elementary
female
formal
geometry
gesturing
girl
greenboard
hand
kid
knowledge
learning
little
looking
male
man
math
mathematics
mature
men
occupation
people
pointing
primary
pupil
raised
room
school
schoolboy
schoolchildren
schoolgirl
sitting
student
study
studying
teacher
teaching
young