Margaret Oliphant Washington, 66, an educator who had been an elementary school teacher and mentor-teacher with the D.C. public schools for 35 years before retiring in 1991, died Jan. 8 at Montgomery General Hospital after a heart attack. She lived in Silver Spring.

She taught at a number of elementary schools, including Randolph-Highlands and Langdon, before spending her last five years in the school system's mentoring program. In 1987, she became a recipient of the Agnes Meyer Outstanding Teacher Award.

Over the years, Mrs. Washington had taught courses at the University of the District of Columbia and Gallaudet and George Washington universities. She also has been a consultant to the National Geographic Society and had done volunteer work for the D.C. public schools.

In retirement, she had exhibited artwork at area shows. She also had created a line of dolls and figurines, as well as stained glass artwork, under her Montan Creations trademark.

Mrs. Washington, a Washington native, was a 1950 graduate of Dunbar High School and a 1954 graduate of Miner Teachers College. She received a master's degree in urban education from George Washington University.

Survivors include her husband of 46 years, Reginald, of Silver Spring; three sons, Reginald Christopher Washington of Satellite Beach, Fla., and Kelly and Stephen, both of Silver Spring; a brother, John Oliphant of Hyattsville; a sister, Louise Jones of Largo; and four grandchildren.