in INVESTIGACION EN EDUCACION MATEMATICA XV in Investigacion en Educacion Matematica, ISSN: 1888-0762
Pages: 513-521 (9)
Conference
15Th Conference on Research in Mathematics Education, Date: SEP 07-09, 2011, Location: Ciudad Real, SPAIN, Sponsors: Soc Espanola Investigac Educac Matematica, Univ Castilla La Mancha