Mr. Andreas Kullick worked for many years as a primary and secondary school teacher and as a teacher trainer. Since 2019, he has been a PhD student at the University of Education Schwäbisch Gmünd in southern Germany. In his dissertation, he explores the question of how we can use technology to support primary school children in speaking English in the heterogeneous English as a foreign language (EFL) classroom. In his lectures, Mr Kullick focuses on heterogeneity in the EFL classroom and Computer Assisted Language Learning (CALL).