- University of Freiburg
- Freiburg University of Education
- PH Freiburg
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- Friedrich Schiller University Jena
- Leibniz Institute for Science and Mathematics Education
External person
- Michigan State University
- Humboldt University of Berlin
- University of Humboldt
- University of Oslo
External person
- Friedrich Schiller University Jena
External person
- Michigan State University
External person
- Michigan State University
External person
- Michigan State University
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- University of Freiburg
- Freiburg University of Education
External person
- Michigan State University
External person
- National Taiwan Normal University
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- Sungkyunkwan University
- Korea Astronomy and Space Science Institute
- University of Science and Technology UST
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- National Pedagogical University
- Instituto Nacional para la Evaluacion de la Educacion (INEE)
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- Sichuan Normal University
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- Michigan State University
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- Sofia University St. Kliment Ohridski
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- National Changhua University of Education
External person
- Michigan State University
- Instituto Nacional para la Evaluacion de la Educacion (INEE)
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- National Taiwan Normal University
External person
- Humboldt University of Berlin
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- Nanyang Technological University
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- National Hsinchu University of Education
- National Tsing Hua University
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- Michigan State University
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- Freiburg University of Education
External person
- National Taiwan Normal University
- Department of Mathematics, National Taiwan Normal University
External person
- Freiburg University of Education
External person
- National Taiwan Normal University
- University of Santo Tomas
External person
- National Pedagogical University
External person
- National Hsinchu University of Education
- National Tsing Hua University
External person
- National Taiwan Normal University
External person
- National Taiwan Normal University
External person