@article {Eraslan:January 2007:0020-739X:1065, author = "Eraslan, Ali", title = "The notion of compartmentalization: the case of Richard", journal = "International Journal of Mathematical Education in Science and Technology", volume = "38", year = "January 2007", abstract = "One of the important phenomena observed in the learning of mathematics is compartmentalization. This phenomenon occurs when a learner has two different, potentially contradictory schemes in his or her cognitive structure; in a typical case, a student deals with the same mathematical concept in an inconsistent or incoherent way, or activates a less relevant scheme to the situation in his or her mind. This research reports a case of compartmentalization phenomenon in which Richard, a tenth-grade algebra honours student, was interviewed on quadratic tasks. Results show evidence for the existence of compartmentalization related to the vertex of a parabola. The article concludes with some suggested educational implications.", pages = "1065-1073(9)", url = "http://www.ingentaconnect.com/content/tandf/tmes/2007/00000038/00000008/art00005" doi = "doi:10.1080/00207390601129170" }