high schools and praxis, he was open-minded to the reforms movement for mathematics and natural science education, which to the end of the 1880s / beginnings of 1890s gained strength. Felix Klein, being elected as leader of the international mathematics education commission (IMUK), consulted Alexander Witting for the papers published by the IMUK. Der mathematische Unterricht an den Gymnasien und Realanstalten und die Ausbildung der Lehramtskandidaten im Königreich Sachsen, (The mathematics class at grammar schools and junior highs, and the education of teachers in the Saxon kingdom) written by Witting was published 1910. The Verein zur Förderung des mathematischen und naturwissenschaftlichen Unterrichts (development association for mathematics and natural science classes) played an essential role for the reforms movement, esp. because of its grass-roots workload. Alexander Witting was one of its board members for a long time, and too was among the founders of the Förderverein’s very busy local union in Dresden. As, in the run of these reforms, differential and integral calculus found entrance to the curriculum of secondary schools for the first time (since 1907 in Saxon), a representation of this subject area was needed which was fitting for these students. On this background Walther Lietzmann (1880–1956) and Alexander Witting together with Teubner Verlag established the Mathematisch-Physikalische Bibliothek in Leipzig. Witting not only was co-publisher, he also was author of several multiply reprinted booklets of that series. His booklets on differential and integral calculus were published since the middle of the 1930s in the Göschen compilation – in a highly extended form and supplemented by separate exercise books. For several years from 1911 on, Alexander Witting additionally published Verhandlungen der Gesellschaft Deutscher Naturforscher und Ärzte (Proceedings of the Society of German Natural Scientists and Doctors). Politics Beginning in 1891, Witting attended military practices nearly every year. Beside others in World War I he was supervisor of a gas defence course for officers in Dessau and was deployed at a mortar school, reaching the rank of major. His military teachings led him to publish Soldaten-Mathematik (Soldiers' Mathematics) in 1916. From the end of 1886 Alexander Witting was a member of the Natural Scientific Society ISIS in Dresden and was active in the mathematical section of ISIS, founded in 1875. His ISIS lectures reflected the results of own researches, experiences from being a teacher, as well as from his works in specialist societies. When the National Socialists took over, Alexander Witting