Born and traised in Germany, I took a mathematics position at the University of Amsterdam in 1930 at the invite of L.E.J. Brouwer.
Since I was Jewish, the Nazis suspended my position as a professor in 1941 but did not deport me because my wife was not Jewish.
In addition to mathematics, I had a strong interest in the social impact and educational aspects of mathematics and science.
Though trained as a specialist in algebraic topology, my work led to founding and leading the Institute for the Development of Mathematical Instruction in Utrecht.
I was a prolific author, specializing in books and articles on didactics in mathematics education.
Hans Freudenthal (1905-1990)