Background
Klingen, Leo H. was born on March 30, 1926 in Viersen, Germany. Son of Michael and Emma (Hertzer) Klingen.
Klingen, Leo H. was born on March 30, 1926 in Viersen, Germany. Son of Michael and Emma (Hertzer) Klingen.
State exam, University Göttingen, Federal Republic Germany, 1951. Doctor of Philosophy, University Göttingen, Federal Republic Germany, 1955.
Teacher, grammer school, Gummersbach, Federal Republic Germany, 1953-1956; teacher, Colegio Alemán, La Paz, Bolivia, 1957-1961; catedrático titular, U. San Andres, La Paz, 1958-1961; deputy, Helmholtz Gymnasium, Bonn, Federal Republic Germany, 1962-1976; principal, Helmholtz Gymnasium, Bonn, Federal Republic Germany, 1976-1990; retired,, 1990; professor computer science in education, U. Cologne, Federal Republic Germany, since 1972; professor computer science, U. Bonn, since 1990. Developer mathematics curriculum North Rhine Westphalian Ministry Education, Düsseldorf, Federal Republic Germany, 1972-1980.
Married Ingrid F. Watzka, October 29, 1960. Children: Carmen C., Christa C., Claudia C., Karin M.