Using the Rasch model to analyze the test of understanding of vectors

Znanstveni rad - Izvorni znanstveni rad

• Autor: Ana Sušac; MBZ: 236434
• Autor: Maja Planinić; MBZ: 184526
• Autor: Damjan Klemenčić
• Autor: Željka Milin Šipuš; MBZ: 129806
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Matematika

Sažetak (engleski)

The test of understanding of vectors (TUV) is a multiple-choice test that was recently developed to assess student understanding of vector concepts required in introductory physics courses at the university level. In this study, the TUV was administered to 889 first-year students at the University of Zagreb. The Rasch model was used to evaluate the functioning of the TUV, and to determine the difficulty scale of vector concepts evaluated by this assessment instrument. The results of the Rasch analysis showed a good functioning of test items. However, the TUV was not well targeted to our sample of first-year engineering and science students in introductory physics courses. About half of the students had abilities outside the range of item difficulties, indicating that the TUV would benefit from including more difficult items that would help to better estimate the abilities of these students. Further analysis of the data from subpopulations in our sample showed that the TUV can be well targeted for certain student populations. Students’ scores suggest that the most difficult vector concept tested by the TUV is the unit vector, followed by the cross product, subtraction of vectors, dot product, and direction of a vector.

• Ključne riječi (engleski): Rasch model; reliability; test construction; Test of Understanding of Vectors (TUV); conceptual understanding; student difficulties
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review Physics Education Research
• Brojčani podaci: vol. 14, br. 2, 023101
• p-ISSN: 2469-9896
• DOI: https://doi.org/10.1103/PhysRevPhysEducRes.14.023101
• URN:NBN: urn:nbn:hr:217:478516
• Datum objave publikacije: 2018
• URL dokumenta: https://journals.aps.org/prper/abstract/10.1103/PhysRevPhysEducRes.14.023101
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. (https://creativecommons.org/licenses/by/4.0/) Received 23 September 2018; published 6 December 2018. Published by the American Physical Society.
• Datum i vrijeme pohrane: 2020-03-01 18:40:54