|Stock Photo ID: 38974552|
|Copyright: Sergey Nivens|
Download any size at one price
|5 images per day||$0.53 / image||$79|
|10 images per day||$0.33 / image||$99|
|20 images per day||$0.28 / image||$169|
Credits are good for up to one year
|25 credits||save 44%||$49|
|100 credits||save 52%||$169|
|500 credits||save 72%||$495|
auditorium, back, background, blackboard, board, business, calculus, caucasian, chalk, chalkboard, class, classroom, clever, college, compute, conceptual, course, education, equation, exam, exercise, fail, forget, formula, frustrated, head, intelligent, knowledge, learn, lecture, lecturer, mathematics, meditate, people, practice, problem, professor, proof, research, room, scholar, school, schooling, science, scientist, seminar, student, teacher, test, university
Made with love in NYC.
Bigstock and Big Stock Photo are registered trademarks of Shutterstock. Bigstockphoto is a trademark of Shutterstock.
© 2004-2014 All rights reserved - Bigstock®