Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence
This study develops and evaluates a graphing line worksheet based on PhET Interactive Simulation integrated with Item Response Theory (IRT) methods to enhance student algebra competence. Involving 120 students, the worksheet comprises 12 items measuring four key indicators: understanding the geomet...
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| Format: | Article |
| Language: | Indonesian |
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Universitas Hamzanwadi
2025-02-01
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| Series: | Jurnal Elemen |
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| Online Access: | https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/27634 |
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| author | Giyanti Indri Lestari Rina Oktaviyanthi |
| author_facet | Giyanti Indri Lestari Rina Oktaviyanthi |
| author_sort | Giyanti |
| collection | DOAJ |
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This study develops and evaluates a graphing line worksheet based on PhET Interactive Simulation integrated with Item Response Theory (IRT) methods to enhance student algebra competence. Involving 120 students, the worksheet comprises 12 items measuring four key indicators: understanding the geometric significance of line slopes, constructing line equations, graphing from line equations, and predicting the effects of variable changes. The 2-Parameter Logistic (2PL) model of IRT was employed to analyze item difficulty and student ability in logit form. The results indicate that the worksheet is effective in improving student algebra competence, with Items 1 and 11 demonstrating a good balance between difficulty and discrimination. Item 2 requires further review because of its high difficulty, whereas Item 12 is considered too easy. Heatmap analysis and Item Characteristic Curves (ICC) revealed variations in student response patterns, confirming the test's ability to evaluate diverse levels of student ability. The integration of interactive simulation and IRT has proven to be an effective strategy in instructional design, supporting adaptive and personalized learning.
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| format | Article |
| id | doaj-art-2e5a28daaeaa4493a067310cb4c023ba |
| institution | Kabale University |
| issn | 2442-4226 |
| language | Indonesian |
| publishDate | 2025-02-01 |
| publisher | Universitas Hamzanwadi |
| record_format | Article |
| series | Jurnal Elemen |
| spelling | doaj-art-2e5a28daaeaa4493a067310cb4c023ba2025-02-04T02:04:20ZindUniversitas HamzanwadiJurnal Elemen2442-42262025-02-0111110.29408/jel.v11i1.2763434887Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competenceGiyanti0Indri Lestari1Rina Oktaviyanthi2Universitas Serang RayaUniversitas Serang RayaUniversitas Serang Raya This study develops and evaluates a graphing line worksheet based on PhET Interactive Simulation integrated with Item Response Theory (IRT) methods to enhance student algebra competence. Involving 120 students, the worksheet comprises 12 items measuring four key indicators: understanding the geometric significance of line slopes, constructing line equations, graphing from line equations, and predicting the effects of variable changes. The 2-Parameter Logistic (2PL) model of IRT was employed to analyze item difficulty and student ability in logit form. The results indicate that the worksheet is effective in improving student algebra competence, with Items 1 and 11 demonstrating a good balance between difficulty and discrimination. Item 2 requires further review because of its high difficulty, whereas Item 12 is considered too easy. Heatmap analysis and Item Characteristic Curves (ICC) revealed variations in student response patterns, confirming the test's ability to evaluate diverse levels of student ability. The integration of interactive simulation and IRT has proven to be an effective strategy in instructional design, supporting adaptive and personalized learning. https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/27634Algebra competencegraphing linesitem response theoryparameter logisticphet interactive simulation |
| spellingShingle | Giyanti Indri Lestari Rina Oktaviyanthi Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence Jurnal Elemen Algebra competence graphing lines item response theory parameter logistic phet interactive simulation |
| title | Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence |
| title_full | Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence |
| title_fullStr | Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence |
| title_full_unstemmed | Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence |
| title_short | Integration of item response theory in the development of PhET-based graphing lines worksheets for optimizing student algebra competence |
| title_sort | integration of item response theory in the development of phet based graphing lines worksheets for optimizing student algebra competence |
| topic | Algebra competence graphing lines item response theory parameter logistic phet interactive simulation |
| url | https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/27634 |
| work_keys_str_mv | AT giyanti integrationofitemresponsetheoryinthedevelopmentofphetbasedgraphinglinesworksheetsforoptimizingstudentalgebracompetence AT indrilestari integrationofitemresponsetheoryinthedevelopmentofphetbasedgraphinglinesworksheetsforoptimizingstudentalgebracompetence AT rinaoktaviyanthi integrationofitemresponsetheoryinthedevelopmentofphetbasedgraphinglinesworksheetsforoptimizingstudentalgebracompetence |