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| * Reasoning in primary school? An analysis of 3rd grade German textbooks. In: Tso, T. Y. (ed.): Proceeding of the [[36th Conference of the International Group for the Psychology of Mathematics Education]]: Opportunities to Learn in Mathematics Education. Taipei (Taiwan) 2012, S. 267. | | * Reasoning in primary school? An analysis of 3rd grade German textbooks. In: Tso, T. Y. (ed.): Proceeding of the [[36th Conference of the International Group for the Psychology of Mathematics Education]]: Opportunities to Learn in Mathematics Education. Taipei (Taiwan) 2012, S. 267. |
| * zusammen mit Meike Plath: Elementary school children solve spatial tasks: A variety of strategies. In: Tso, T-Y. (ed.): Proceedings of the 36th Conference of the International Group for the Psychology of Mathematics Education: Opportunities to Learn in Mathematics Education. Taipei (Taiwan) 2012, S. 305-312. | | * zusammen mit Meike Plath: Elementary school children solve spatial tasks: A variety of strategies. In: Tso, T-Y. (ed.): Proceedings of the 36th Conference of the International Group for the Psychology of Mathematics Education: Opportunities to Learn in Mathematics Education. Taipei (Taiwan) 2012, S. 305-312. |
− | * Understanding of capacity in 3rd grade. In: 12th International Congress on Mathematical Education (ICME-12) – TSG 8: Measurement. Seoul 2012 (Pre-Proceedings of the 12th International Congress on Mathematical Education: 8 July – 15 July, 2012, COEX, Seoul, Korea ICME (S. 1955-1963). | + | * Understanding of capacity in 3rd grade. In: [[ICME-12|12th International Congress on Mathematical Education (ICME-12)]] – TSG 8: Measurement. Seoul 2012 (Pre-Proceedings of the 12th International Congress on Mathematical Education: 8 July – 15 July, 2012, COEX, Seoul, Korea ICME (S. 1955-1963). |
| * Vorstellungen über null und Null – eine Fragebogenstudie. In: Beiträge zum Mathematikunterricht 2008: Vorträge auf der 42. Tagung für Didaktik der Mathematik vom 13.3.2008 bis 18.3.2008 in Budapest. Münster: WTM, S. 677-680. | | * Vorstellungen über null und Null – eine Fragebogenstudie. In: Beiträge zum Mathematikunterricht 2008: Vorträge auf der 42. Tagung für Didaktik der Mathematik vom 13.3.2008 bis 18.3.2008 in Budapest. Münster: WTM, S. 677-680. |
| * Metaphors and Metonymies and their Impact in Mathematical Classroom Discourses. In: 10th International Congress on Mathematics Education (ICME-10) – TSG 25: “Language and Communication in Mathematics Education.” Distributed Paper Kopenhagen 2004, 10 Druckseiten. | | * Metaphors and Metonymies and their Impact in Mathematical Classroom Discourses. In: 10th International Congress on Mathematics Education (ICME-10) – TSG 25: “Language and Communication in Mathematics Education.” Distributed Paper Kopenhagen 2004, 10 Druckseiten. |