I'm a retired math's and physics high school teacher. I have been translating GeoGebra since 4.2 and I wrote a textbook for teachers: Korhonen, Luoma-aho, Rahikka. GeoGebra-opas, MFKA, 2012. In 2013 I got the Fulbright Distinguished Award in Teaching. 2016 - 2019 I was the CEO of Finnish GeoGebra Institute. From 2022 I have been Associate Member of the Matriculation Examination Board. My blog is at https://mikonfysiikka.wordpress.com.