"Dealing with the unfamiliar" plays an even stronger role in the social context today than it did in history. The global horizon of our everyday perception presents the challenge of constantly rethinking the relationship between I, you and others. In school lessons, dealing with the unfamiliar is a very personal challenge, as it happens in adolescence all about the formation of a social self-mediated by learning processes. The Federal Republic is a migration or post-migration society. Students experience this fact in their everyday life. In addition, the digital world breaks through the...