The objective of this article is to describe types of mathematical reasoning evidenced by a middle school mathematics teacher, when answering two generalization questions in a figural pattern generalization task, related to quadratic sequences. Reasoning is delimited from teacher's arguments, reconstructed from a theoretical-methodological…

The 5th International Conference on Language, Literature and Culture has been hosted by Mehmet Akif Ersoy University (Burdur, Turkey), in cooperation with Çankaya University (Ankara, Turkey) and Süleyman Demirel University (Isparta, Turkey). Our main aim has been to provide a forum for discussion, to facilitate integration in these fields, and to…

We examine eight cases of argumentation in relation to a proportional reasoning task--the "Paint" task--in which the "constant sum" strategy was a significant factor. Our analysis of argument follows Toulmin's (1958) approach and in the discourse we trace factors which seem to facilitate changes in argument. We find that the arguments of "constant…

A study examined and tested the knowledge sources individuals tap in the planning process and the process of plan modification. It is expected that contrary to plan-based theories, individuals will fail to remediate flaws in their plans if given the chance to develop a plan to pursue the same goal. It is also expected that differences exist…