Search Results - Olaf Köller

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    PISA 2015 by Anja Schiepe-Tiska, Olaf Köller, Christiane Sälzer, Eckhard Klieme, Kristina Reiss

    Published 2021
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    PISA 2018 by Olaf Köller, Eckhard Klieme, Kristina Reiss, Mirjam Weis

    Published 2021
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    TIMSS 2019. Mathematische und naturwissenschaftliche Kompetenzen von Grundschulkindern in Deutschland im internationalen Vergleich by Daniel Kasper, Olaf Köller, Christoph Selter, Heike Wendt, Knut Schwippert, Nele McElvany, Mirjam Steffensky

    Published 2021
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