Generalizability Theory Research On Developing a Scoring Rubric to Assess Primary School Students' Problem Posing Skills
Osman Cankoy 1, Hasan Özder 1 *
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1 Atatürk Öğretmen Akademisi* Corresponding Author


The aim of this study is to develop a scoring rubric to assess primary school students' problem posing skills. Posing a problem under certain conditions or reorganizing an existing problem requires great cognitive effort and positively affects mathematical development. Problem posing is not only a learning activity. It also improves students' conceptual understanding, enhances their mathematical communication skills, interests them in mathematics and their environment and gives them the opportunity to use creativity.

Material and methods:
A rubric including five dimensions namely solvability, reasonability, mathematical structure, context and language was used. For the purpose of testing the reliability of the developed rubric, selected independent raters scored the participants’ problem posing skills both with and without the developed rubric. Theory of generalizability, which guided the study, led through testing the reliability of the scores.

More reliable scoring was obtained using the scoring rubric. The G and phi coefficients rose somewhat after increasing the number of items and raters in both scoring methods. However, increasing the number of items affected these coefficients slightly more than increasing the number of the raters.

Using a scoring rubric increases inter-rater reliability as well as revealing the differences amongst students.


This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Article Type: Research Article

EURASIA J Math Sci Tech Ed, Volume 13, Issue 6, June 2017, 2423-2439

Publication date: 15 Jun 2017

Article Views: 3162

Article Downloads: 2117

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