academic
aged
back
blackboard
board
chalkboard
checking
class
classroom
college
course
demonstrating
discussing
education
exam
experienced
explaining
graduation
green
heavy
holding
homework
learn
learning
lecture
lecturer
lesson
man
mentor
mentoring
notes
old
paper
papers
pile
pointing
presenting
school
science
secondary
showing
study
studying
teacher
teaching
training
tutor
tutoring
university