Old male teacher and young male student in front of green board
Palabras clave
old,
teacher,
student,
teaching,
education,
studying,
study,
office,
business,
seminar,
coach,
coaching,
presenting,
computer,
laptop,
online,
cyberspace,
virtual,
social,
distance,
teleconference,
presentation,
school,
learning,
trainee,
training,
classroom,
man,
class,
board,
blackboard,
blackboard,
pointing,
showing,
demonstrating,
lesson,
back,
discussing,
explaining,
lecture,
lecturer,
personal
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