Proceedings of the Ninth International Congress on Mathematical Education pp 95-96 | Cite asGaudi’s Ideas for Your Classroom: Geometry for Three-Dimensional CitizensAuthorsAuthors and affiliationsClaudi AlsinaConference paper 113 Downloads This is a preview of subscription content, log in to check access.Copyright information© Springer Science + Business Media, Inc. 2004Authors and AffiliationsClaudi Alsina11.Universitat Politecnica de CatalunyaSpain