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.:
KEYWORDS
adult african black blackboard board calculus caucasian circuit class classroom college cosine desk diagram diversity education educational electrical electrician group man marker math mathematics measurement men people person room ruler screen sin student teacher teaching technical trigonometry university vocational white write
More images on Dreamstime
Similar Images
More images by the same author
1 week free trial. Any size, for free
Renews at $25/month, cancel or upgrade at any time
Click here for your free trial!
240,433,537 images | 1,213,480 contributors | 53,266,489 total users