Born on St. John's, Antigua, she was a 1970 graduate of Charlotte Amalie High School at St. Thomas, Virgin Islands. She studied at Blackburn College in Illinois and in 1976 she earned a bachelor's degree from Morgan State University. She also had a master's degree in education from Goucher College.
In 1979, she joined the Baltimore City's public schools and taught at Lombard Middle School, Southwestern High School and Edmondson-Westside High School, where she had been senior class adviser in 1992 and 1999. Miss Aska taught the sciences, including biology, anatomy, physiology, ecology and physics.
She was named the 1994-1995 Teacher of the Year in the Edmondson science department.
She was a member of the Maryland Association of Science Teachers and the Johns Hopkins Chapter of Phi Delta Kappa.
She enjoyed travel and once visited Kenya on an Earthwatch expedition. Family members said she taught women in a village to build solar ovens to feed their families. She also liked gospel, reggae and calypso music.
Services will be held at 10:30 a.m. Friday at the Set the Captives Free Outreach Center, 7111 Windsor Blvd., where she was a member and volunteered at its vacation Bible school.
Survivors include her mother, Othella Aska of Baltimore; two brothers, St. Clair Aska of St. John's, Antigua, and Collin Aska of Los Angeles; four sisters, Genevieve A. Encarnacion of St. Croix, Sharon Aska of Randallstown, Joanne Everest of Havelock, N.C., and Janice Bess of Baltimore; and nieces and nephews.