REFERENCES
Van den Heuvel-Panhuizen, M. (ed.): 2001, 'Proceedings of the 25th Conference of the International Group for the Psychology of Mathematics Education', Freudenthal Institute, Utrecht, The Netherlands Norma Presmeg Mathematics Department, Illinois State University, Normal, IL 61790-4520, USA Telephone +1-309-4387990, Fax +1-309-4385866, E-mail: npresmeg@ilstu.edu OR npresmeg@msn.com Marja van den Heuvel-Panhuizen Freudenthal Institute, Utrecht University, Aidadreef 12, 3561 GE Utrecht, The Netherlands Telephone +31-30-2635548, Fax +31-30-2660430, E-mail: m.vandenheuvel@fi.uu.nl
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Presmeg, N., van den Heuvel-Panhuizen, M. Leen Streefland's Legacy. Educational Studies in Mathematics 54, 1–4 (2003). https://doi.org/10.1023/B:EDUC.0000005235.20840.14
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DOI: https://doi.org/10.1023/B:EDUC.0000005235.20840.14