Mary F. Allman, 82, a Washington teacher and mother of seven children who retired in 1980 from McGogney Elementary School and later volunteered as a teacher in Poland, died of liver cancer Aug. 11 at her home in Alexandria.

She was a native of the District and a graduate of Central High School and Wilson Teachers College. She did graduate work in education at the University of Maryland.

Mrs. Allman taught at Adams Elementary School before World War II and resumed her career in 1963, teaching at Randall Highlands and Orr elementary schools. She also gave private piano lessons for many years and taught in Polish primary schools in the early 1990s.

Mrs. Allman volunteered in schools on behalf of the National Symphony Orchestra, delivered Meals on Wheels in Washington and played organ at St. Xavier's Catholic Church in Washington and Good Shepherd Catholic Church in Alexandria.

She was a volunteer at Inova Mount Vernon Hospital and a member of the Hollin Hall Senior Center and a travel club.

Her husband of 47 years, Leo M. Allman, died in 1984.

Survivors include her children, Leo M. Allman Jr. of Phoenix, Md., Paul J. Allman of Chevy Chase, Maria B. Sundy of Monaca, Pa., Ann Allman of Alexandria, Stephen "Burt" Allman and Elizabeth Allman, both of Washington, and Mark C. Allman of Charlemont, Mass.; a brother; a sister; and nine grandchildren.