Analysis of the characteristic of mathematical literacy test items on algebraic elements using IRT

Authors

DOI:

https://doi.org/10.29407/jmen.v12i1.26949

Keywords:

algebra, mathematical literacy, item response theory

Abstract

Accurate measurement tools are needed to assess mathematical literacy in algebra. This study purposes to describe the test items characteristics in a mathematical literacy test using IRT. This study conducted by modifying the test development steps according to Downing & Haladyna. Subjects in this study were 179 7th students at a junior high school in Yogyakarta. The data collection instruments included a validation sheet and a test instrument. Data analysis techniques included content validity, construct validity, construct reliability, item and person characteristics using the PCM model. The results of the study indicate that there are eight items of mathematical literacy in algebra for seventh grade. All items are content-valid with a value of V >0.80, construct-valid (SLF > 0.45), and construct-reliable (CR>0.70). The difficulty level of items is in the good category with a b value in the range -2<b<2. The ICC curve shows that there are 2 items with ideal ICC and 6 items with non-ideal ICC. The information function and SEM indicate that the test instrument provides the best information when administered to students with abilities slightly below average. There were 6 questions that met the item fit criteria and 112 students who met the person fit criteria.

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Author Biography

  • Sintha Sih Dewanti, Universitas Islam Negeri Sunan Kalijaga Yogyakarta

    Assoc. Prof. Dr. Sintha Sih Dewanti, M.Pd.Si is a lecturer in Mathematics Education with a scientific field of Mathematics Education Assessment and educational background at the Bachelor and Master levels in the Mathematics Education study program and doctoral level in the Educational Research and Evaluation study program.

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Published

2026-05-20

How to Cite

Nurul Izzah, J. ., & Dewanti, S. S. (2026). Analysis of the characteristic of mathematical literacy test items on algebraic elements using IRT. Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah Di Bidang Pendidikan Matematika, 12(1), 16-31. https://doi.org/10.29407/jmen.v12i1.26949

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