{"department":[{"_id":"556"}],"type":"book_chapter","date_created":"2022-04-05T10:19:10Z","place":"Kiel","citation":{"mla":"Hattermann, Mathias, et al. “An Innovative Approach to Negative Numbers.” <i>Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5</i>, edited by Anke M. Lindmeier and Aiso Heinze, PME, 2013, p. 71.","ama":"Hattermann M, vom Hofe R, Kullmann H. An innovative approach to negative numbers. In: Lindmeier AM, Heinze A, eds. <i>Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5</i>. PME; 2013:71.","bibtex":"@inbook{Hattermann_vom Hofe_Kullmann_2013, place={Kiel}, title={An innovative approach to negative numbers}, booktitle={Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5}, publisher={PME}, author={Hattermann, Mathias and vom Hofe, Rudolf and Kullmann, Harry}, editor={Lindmeier, Anke M. and Heinze, Aiso}, year={2013}, pages={71} }","apa":"Hattermann, M., vom Hofe, R., &#38; Kullmann, H. (2013). An innovative approach to negative numbers. In A. M. Lindmeier &#38; A. Heinze (Eds.), <i>Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5</i> (p. 71). PME.","ieee":"M. Hattermann, R. vom Hofe, and H. Kullmann, “An innovative approach to negative numbers,” in <i>Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5</i>, A. M. Lindmeier and A. Heinze, Eds. Kiel: PME, 2013, p. 71.","chicago":"Hattermann, Mathias, Rudolf vom Hofe, and Harry Kullmann. “An Innovative Approach to Negative Numbers.” In <i>Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5</i>, edited by Anke M. Lindmeier and Aiso Heinze, 71. Kiel: PME, 2013.","short":"M. Hattermann, R. vom Hofe, H. Kullmann, in: A.M. Lindmeier, A. Heinze (Eds.), Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5, PME, Kiel, 2013, p. 71."},"publication":"Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5","editor":[{"full_name":"Lindmeier, Anke M.","last_name":"Lindmeier","first_name":"Anke M."},{"full_name":"Heinze, Aiso","first_name":"Aiso","last_name":"Heinze"}],"user_id":"105186","_id":"30763","publisher":"PME","language":[{"iso":"eng"}],"page":"71","publication_status":"published","date_updated":"2026-08-20T12:47:42Z","jel":["I24"],"author":[{"first_name":"Mathias","last_name":"Hattermann","full_name":"Hattermann, Mathias"},{"full_name":"vom Hofe, Rudolf","first_name":"Rudolf","last_name":"vom Hofe"},{"orcid":"0000-0001-5488-5105","first_name":"Harry","last_name":"Kullmann","full_name":"Kullmann, Harry","id":"77972"}],"year":"2013","status":"public","title":"An innovative approach to negative numbers"}