Middle school students' employments of gestural signs: A case study

Okumus S., Hollebrands K.

10th Congress of the European-Society-for-Research-in-Mathematics-Education (CERME), Dublin, Ireland, 1 - 05 February 2017, pp.3960-3967 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: Dublin
  • Country: Ireland
  • Page Numbers: pp.3960-3967
  • Recep Tayyip Erdoğan University Affiliated: No


In this research study, we investigated how middle school students created 3-dimensional objects from 2-dimensional figures using an extrusion method. In a summer enrichment program, students used manipulatives and a dynamic geometry program (Cabri 3D). We identified students' strategies for forming 3-dimensional objects with a focus on their gestural signs. The results demonstrated that they most often employed dynamic-pointwise and dynamic-objectwise gestures to demonstrate the lateral faces or edges of 3-dimensional objects. Also, students linked their gestural signs and the Segment tool of Cabri 3D to indicate their reasoning.