Ethel Ethonia Newman Jones, 80, who taught in the public schools of Montgomery County for 25 years before retiring in 1968, died of congestive heart failure April 24 at Montgomery General Hospital. She lived in Gaithersburg.

Mrs. Jones was born in Youngstown, Ohio, and grew up in Montgomery County. She graduated from Dunbar High School and the old Miner Normal School in Washington. She also graduated from Morgan State University and earned a master's degree in education from New York University.

She taught in the public schools of North Carolina and Delaware before returning to the Washington area in 1938.

She joined the Montgomery County school system in 1943. During her career, she taught elementary classes at several schools, including Longview Elementary in Gaithersburg. She retired from Harmony Hill Elementary in Silver Spring.

Mrs. Jones had been a member of the Montgomery County and Maryland State teachers associations, and the Montgomery County and National education associations.

She was a member of the Brook Grove Senior Citizens Association and Emory Grove United Methodist Church in Gaithersburg.

Her marriage to Nathan Jones ended in divorce.

Survivors include a daughter, Annette J. Shelton, and a brother, Lawrence W. Newman, both of Gaithersburg, and a sister, Elizabeth G. Daniels of Washington.