Stock photography, photos: Young Teacher Stock photos of A young woman writes an equation on the black board. Photograph: © Tyler Olson Click for a larger image and more information Keywords associated with this stock photo: Tyler, olson, horizontal, black, green, chalk, board, white, girl, lady, female, math, algebra, trigonometry, alg, trig, science, equasion, function, derivative, integral, power, school, university, teacher, professor, learn, write, shirt, crossed, arms, ask, question, ponder, people, woman, women, beauty