ID 68749470 © Pojoslaw | Megapixl.com
Model Released
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
angle background beard big black blackboard blue brick chalk classroom clever college concept doodle education equations exhausted formula haircut hipster learning man manager math mathematics mustache school scientist shirt sign sleeping smart standing student studying symbol teacher text tired university wall wisdom wise young