academic
algebra
assignment
blackboard
book
books
chalkboard
class
classroom
college
disappointed
education
equation
evening
exam
exams
exhausted
fatigue
formula
frustrated
frustration
high
late
learning
lecture
lecturer
lesson
man
math
mathematical
mathematician
mathematics
night
overtime
physicist
physics
preparing
reading
revising
sad
school
student
studying
teacher
textbook
textbooks
tired
unhappy
university
upset