Teacher talking near math formulas on chalkboard and blurred digital camera in classroom — Stock photos

"Teacher talking near math formulas on chalkboard and blurred digital camera in classroom" is a stock image by HayDmitriy. It’s available in the following resolutions: 667 x 1000px, 1335 x 2000px, 4912 x 7360px. The minimum price for an image is 2.99$. Image in the highest quality is 4912 x 7360px, 300 dpi, and costs 9.99$.