The project CoDec (Colonisation and Decolonisation in National History Cultures and Memory Politics in European Perspective) deals with several important research issues and approaches towards history cultures and memory politics in Europe: - studying the reappraisal of the colonial past and processes of decolonisation in different European states in a comparative perspective and in cooperation with the European project partners - studying the way of teaching the topic in the partner states in history education and the question of the impact and importance of colonial pasts on history cultures and memory politics today- discussing in how far national memory cultures of colonialism and decolonisation can be implemented into a collective European frame, in the context of the idea that the colonial past is a connecting as well as a dividing moment in European history. Phases and projects of de-centralisation in history education and widening historic views beyond national constraints enable students to become aware of cultural diversity and to recognise and estimate it accordingly. In the encounter with other times and historically different worlds there is the chance of looking at the own history with a new awareness and to respect the other as a legitimate variant. In general, a closer cooperation between science and didactics is highly important.Products of the project:- teaching modules, published in print and in digital versions, incl. introductions and lesson plans plus new sources, translated into the official EU-languages - innovative conference as a means of further teacher training, which will be attended by participants from all stages of teacher education