ID 63823131 © Matriyoshka | Megapixl.com
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.:
algebra and back background biology blackboard book books brainstorm bulb campus children college concept creative diploma education educational examinations exams experiment geometry graduation icon icons idea illustration knowledge learning lesson light mathematics microscope network notebook objects open pedagogy power research school schooling science scientific september sign student study symbol teacher teaching textbooks training university vector