KÂĞIT KATLAMANIN SEMİYOTİK ARABULUCULUK TEORİSİ AÇISINDAN İNCELENMESİ.

The aim of this study is to introduce Theory of Semiotic Mediation, which is a theory regarding mathematics teaching, in Turkey and provide an example for its practice. After describing the main characteristics and concepts of the theory, semiotic potential of a sheet of paper, which was chosen as an artifact of Theory of Semiotic Mediation, was analyzed in paper folding activities in order to discuss the practice of the theory and also the signs were analyzed that occurred in the building and conceptual constructing of quadrilaterals with only one symmetry axe (isosceles trapezoid and rhombus). The study was a case study which was carried out with 35 students who were studying in 10th grade. The students were divided into groups of four and five. Only one groups’ activity was reported in this paper. The analysis of the semiotic potential of paper folding showed that it was an artifact that helps students to reconstruct concepts such symmetry and equality by means of coincide and crease and to think deeply on the characteristics of quadrilaterals like rectangle, square, trapezoid and etc. which students have already known. The paper has properties that can be used as an artifact of the Semiotic Mediation Theory. In order to be used the mentioned theory in classes, it was founded that teachers’ guidance role was quite essential. [ABSTRACT FROM AUTHOR]