ID 65752139 © Tzidos | 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 background black blackboard board book calculate chalk chalkboard class classroom college complex complicated concept create creativity drawing education equation exam formula formulas green high idea illustration intelligent knowledge learn lecture lesson light math mathematical mathematics number on pattern physics plus problem school science sign solution study studying symbol teach teacher the theory trigonometry university white write writing