Teacher explaining formula at blackboard in school — Stock photos

"Teacher explaining formula at blackboard in school" is an authentic stock image by ikon-images. It’s available in the following resolutions: 1600 x 1600px, 2600 x 2600px, 4252 x 4252px. The minimum price for an image is 49$. Image in the highest quality is 4252 x 4252px, 300 dpi, and costs 449$.