She studied graphic art and painting at the University of Fine Arts as well as philosophy at University of Hamburg, both in Hamburg. After teaching in Hamburg and Wuppertal, she held a professorship at the Berlin University of the Arts. Throughout Oppermann’s career she received several awards and scholarships, including the Villa Romana Prize, Florence, 1977, and a DAAD Fellowship and residency in Paris, 1968–1969. Her ensembles occupy an important position in the art of the 1960s and 1970s, combining conceptual and process art. They were shown in many international exhibitions such as: documenta 6, Kassel, 1977; 39th Venice Biennale, Venice, 1980; 5th Biennale of Sydney, Sydney, 1984; documenta 8, Kassel, 1987; and more recently at the 30th Sao Paulo Biennial, Sao Paulo, 2012. Oppermann lived and worked in Hamburg, Berlin, and Celle, where she died in 1993.