Doris J. Schattschneider (née Wood) is an American mathematician, a retired professor of mathematics at Moravian College.
She is known for writing about tessellations and about the art of M. C. Escher,[1][2] for helping Martin Gardner validate and popularize the pentagon tiling discoveries of amateur mathematician Marjorie Rice,[3] and for co-directing with Eugene Klotz the project that developed The Geometer's Sketchpad.
[1][2][4] Schattschneider was born in Staten Island; her mother, Charlotte Lucile Ingalls Wood, taught Latin and was herself the daughter of a Staten Island school principal, and her father, Robert W. Wood, Jr., was an electrical engineer who worked for the New York City Bureau of Bridge Design.
Marjorie Rice was an amateur mathematician and San Diego mother of five who became fascinated by Martin Gardner's descriptions of tessellations by pentagonal tiles in Scientific American.
She investigated, and devising her own notation system, had found a previously unknown type of pentagon tiling by February 1976.