* Since 1963 teacher of chemistry, biology and sports
at Lauterbach high school.
* 1972 - 78 teacher in Cairo / Egypt at German Evangelic Highschool.
Starting in-service training with collegues.
* 1993- 96 Integrated expert in the Ministry of Education in Egypt.
* 1997 Short term expert in Jordan in the EU-Project:
"Improving Teacher Education at Jordan Universities".
* 1997 up till now: Cooperation with Professor M.K. El-Marsafy up till now resulting in this Internet presentation, in workshops at schools (Friedberg, Lauterbach) and at ..Justus-von-Liebig University, Gießen) in Germany, workshops, publications at the International Conferences on Chemical Education in Cairo, Budapest, Peking, Istanbul, Seoul (1998 - 2006).
Workshops and extracurricular activities during invitations at schools, colleges and universitiese in Germany, Austria, Sweden, Egypt, Turkey, Zimbabwe, Mexico City, Merida (Mexico), Hong Kong, Hangzhou, Senshen (China), Santiago de Chile (2007).