Stock photography, photos: Young Teacher Writing Equation Stock photos of A young teacher is writing an algebra 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,