[url=https://www.geogebra.org/u/markus+hohenwarter]Markus Hohenwarter[/url] is an Austrian mathematician and professor at the Johannes Kepler University.  He is the director of the Institute for Didactics of Mathematics.  As part of his university education (Applied Computer Science and Mathematics Teaching) he developed the mathematical teaching software GeoGebra, which has been awarded numerous software awards in Europe and the United States (Tech Award). Hohenwarter taught at a grammar school and worked in numerous teacher training projects in Austria, England and the USA. After his dissertation at the University of Salzburg (2006), he worked at Florida Atlantic University and Florida State University . On 1 February 2010 he became a university professor at the Institute for Didactics of Mathematics at the JKU Linz.  His research focus is the use of technology in mathematics education.