Young male student sitting in classroom
Palabras clave
studying,
student,
education,
school,
mathematic,
physics,
classroom,
university,
class,
college,
lesson,
blackboard,
formula,
learning,
blackboard,
book,
exam,
book,
reading,
exam,
preparing,
textbook,
textbook,
young,
elementary,
smart,
smartphone,
mobile,
phone,
speaking,
talking,
explaining,
equation,
high,
algebra,
academic,
man,
mathematical,
night,
evening,
overtime,
late,
teacher,
lecturer,
lecture,
assignment,
mathematic,
mathematician,
physicist
){kind=link}