Background
Zielke, Donald Henry was born on August 8, 1938 in Aurora, Illinois, United States. Son of Henry Fred and Emily Clare (Staffeldt) Zielke.
Zielke, Donald Henry was born on August 8, 1938 in Aurora, Illinois, United States. Son of Henry Fred and Emily Clare (Staffeldt) Zielke.
Bachelor, Valparaiso U., 1960; Master of Arts, University Texas, 1966; Doctor of Philosophy, University Texas, 1982.
Mathematics teacher junior high and high school, Long Island Lutheran High School, Brookville, New York, 1960-1964; mathematics teacher, Porter Junior High School, Austin, Texas, 1965-1967; professor mathematics, Concordia Lutheran College, Austin, since 1967. Workshop leader Texas Mathematics Staff Development, Austin, since 1989. Presenter Texas Lutheran Teachers Conference, Austin, 1991.
Member National Council Teachers Mathematics Mathematics Association American.
Married Dorothy Helen Meyer, August 29, 1964. Children: Jonathan, Deborah, Cynthia, Daryl.