* 2008 - 2011 Promotionsstudium am “College of Education” der University of Georgia. Promotion in Didaktik der Mathematik, University of Georgia. Thema: “[[Preservice Teachers’ Patters of Metacognitive Behavior During Mathematics Problem Solving in a Dynamic Geometry Environment]]” | * 2008 - 2011 Promotionsstudium am “College of Education” der University of Georgia. Promotion in Didaktik der Mathematik, University of Georgia. Thema: “[[Preservice Teachers’ Patters of Metacognitive Behavior During Mathematics Problem Solving in a Dynamic Geometry Environment]]” |