1. Christian Wittlich, Department of Geography Didactics, Institute of Geography, University of Bremen, Universitäts-Boulevard 13, Bremen, Germany.
2. Leif Mönter, Department of Geography Didactics, Competence Center for Regional Learning, VISTRA—Vechta Institute of Sustainability Transformation in Rural Areas, University of Vechta, Driverstraße, Germany.
3. Hannah Lathan, Department of Geography Didactics, Competence Center for Regional Learning VISTRA—Vechta Institute of Sustainability Transformation in Rural Areas, University of Vechta, Driverstraße, Germany.