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The present paper gives an overview of research on heterogeneity and diversity in German chemistry classes. The terms "heterogeneity" and "diversity" are first explained before discussing specific studies. The different facets of heterogeneity and diversity are asserted. Finally, the focus will be placed on language and special needs since both of these dimensions are frequently discussed in the German context. A comparison between international and national research are given. The implications and suggestions not only for national but also for international science research are presented.

Durch die Ratifizierung der UN-Behindertenrechtskonvention (United Nations 2006, Artikel 24) hat sich Deutschland verpflichtet »Bildung für alle« (UNESCO 2015) im deutschen Schulsystem möglich zu machen. In der Lehrer*innenbildung stellen sich zwei Herausforderungen für die Fachdidaktiken: Erstens ist der Schulunterricht in verschiedene Fächer aufgegliedert, die jeweils eigene Fachinhalte aufweisen. Diese Inhalte müssen entlang fachdidaktischer Prinzipien inklusiv aufbereitet werden. Zweitens steigt die Komplexität der Fachinhalte vom Übergang der Grundschule in die Sekundarstufe deutlich an, sodass es für Lehrkräfte immer schwieriger wird, auf heterogene Lernvoraussetzungen angemessen einzugehen (Musenberg und Riegert 2015, 5). Die Professionalisierung von Lehrkräften muss gezielt auf diese Herausforderungen reagieren und Lehramtsstudierende nachhaltig auf ihr Tätigkeitsfeld vorbereiten. Wie diese Professionalisierung von Lehramtsstudierenden in Forschung und Lehre umgesetzt werden kann, wird exemplarisch an einem Projektseminar zum inklusiven naturwissenschaftlichen Unterricht vorgestellt. Das BMBF Projekt »Nawi-In« vereint Forschung und Lehre, indem es die Kompetenzentwicklung Studierender im Projektseminar beforscht. Dies wird durch videobasierte Kompetenzforschung begleitet (Riegel 2013).

Almost every country in the world is obligated to implement education policies to enable an inclusive school system. However, implementing techniques to be inclusive in schools is a major challenge to teachers, especially to those teaching a subject at secondary level and higher. Most of the literature concerning inclusive science education was published in recent years, and is more normative than empirical. Teachers struggle to transfer these normative demands to their accustomed way of teaching science. In this study, we analyze conflicts a teacher experiences when teaching a so-called ‘hard science’ like chemistry at an inclusive school. On the one hand, inclusive science education should facilitate participation in science specific learning processes for all learners. This broad perspective on inclusion demands that everyone can take part in everyday classroom life. On the other hand, chemistry strives for the understanding of abstract concepts, theories and models, which forms a barrier to learning chemistry for many people. This paper presents an explorative case study focusing on these conflicting demands. To reconstruct the inconsistencies, we analyzed a videotaped teacher–student discourse on atoms. Using the documentary method, a qualitative approach developed by the sociologist Ralf (Bohnsack et al., 2010). distinguishing between explicit and implicit knowledge, it was possible to reveal the orientational frameworks guiding the teacher’s actions. On the surface level, traditional scientific educational approaches structure the discourse. Reconstruction of the discourse is deep, as evidence was found for a participation-oriented framework as well as for the challenges the conflicting demands of chemistry and inclusive teaching put on teaching. We implicate that future professional development courses must not only concentrate on combining chemistry with inclusive pedagogies, i.e., how to teach, but also on the reflection of implicit beliefs concerning inclusive chemistry teaching.

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