Steve Schluchter recently published an article on his experience teaching a blind student at George Mason, including the tactile graphs previously described in this blog: http://gmumathmaker.blogspot.com/2015/11/tactile-graphs-for-blind-math-student.html
https://nfb.org/images/nfb/publications/jbir/jbir18/jbir080105.html
Steve Schluchter, "Notes on Teaching Precalculus to a Blind Student in a College Precalculus Course," Journal of Blindness Innovation and Research, Vol 8, No 1 (2018).
