[{"date_updated":"2022-05-17T10:16:48Z","citation":{"chicago":"Hattermann, Mathias, Rudolf Vom Hofe, and Harry Kullmann. “An Innovative Approach to Negative Numbers.” In *{Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5}*, edited by Anke M. Lindmeier and Aiso Heinze, 71. Kiel: PME, 2013.","ama":"Hattermann M, Vom Hofe R, Kullmann H. An innovative approach to negative numbers. In: Lindmeier AM, Heinze A, eds. *{Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5}*. PME; 2013:71.","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.","mla":"Hattermann, Mathias, et al. “An Innovative Approach to Negative Numbers.” *{Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5}*, edited by Anke M. Lindmeier and Aiso Heinze, PME, 2013, p. 71.","apa":"Hattermann, M., Vom Hofe, R., & Kullmann, H. (2013). An innovative approach to negative numbers. 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}* (p. 71). PME.","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} }","ieee":"M. Hattermann, R. Vom Hofe, and H. Kullmann, “An innovative approach to negative numbers,” in *{Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5}*, A. M. Lindmeier and A. Heinze, Eds. Kiel: PME, 2013, p. 71."},"type":"book_chapter","status":"public","date_created":"2022-04-05T10:19:10Z","page":"71","user_id":"55409","place":"Kiel","department":[{"_id":"556"}],"year":"2013","author":[{"first_name":"Mathias","full_name":"Hattermann, Mathias","last_name":"Hattermann"},{"last_name":"Vom Hofe","full_name":"Vom Hofe, Rudolf","first_name":"Rudolf"},{"first_name":"Harry","id":"77972","full_name":"Kullmann, Harry","last_name":"Kullmann"}],"editor":[{"first_name":"Anke M.","last_name":"Lindmeier","full_name":"Lindmeier, Anke M."},{"first_name":"Aiso","full_name":"Heinze, Aiso","last_name":"Heinze"}],"title":"An innovative approach to negative numbers","publisher":"PME","_id":"30763","language":[{"iso":"eng"}],"publication":"{Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education (PME). Volume 5}"}]