The role of definitions on classification of solids including (non)prototype examples: The case of cylinder and prism

Isiksal-Bostan M., Yemen-Karpuzcu S.

10th Congress of the European-Society-for-Research-in-Mathematics-Education (CERME), Dublin, Ireland, 1 - 05 February 2017, pp.3320-3327 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: Dublin
  • Country: Ireland
  • Page Numbers: pp.3320-3327
  • Middle East Technical University Affiliated: Yes


The purpose of this study is to investigate prospective middle school mathematics teachers' (PMTs) formal definitions regarding cylinder and prism and the role of these definitions on their classifications of solids involving (non) prototype examples. Data were collected through questionnaire and interview protocol from three PMTs who were 3rd year students in one of the teacher education programs in Turkey. Data analysis revealed that PMTs mostly used inappropriate terminology in defining cylinder and prism. Despite their inappropriate definitions, one PMT could classify cylinders and non-cylinders among the groups of solids correctly. PMTs who could not classify cylinders correctly made incorrect inclusions regarding the cylinders and prisms.