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All Journal Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA)
Muhammad Ilham Ardiansyah
Universitas Veteran Bangun Nusantara Sukoharjo
Biochemistry, Genetics & Molecular Biology Chemistry Education Physics

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Analisis Kualitas Butir Soal Tes Biologi Menggunakan Rasch Model Intan Oktaviani; Pramesti Ayu Lestari; Erliana Putri Isnanto; Khalishah Nabilla Putri; Muhammad Ilham Ardiansyah; Suwarto Suwarto
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 7, No 2 (2026): Mei 2026
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v7i2.1002

Abstract

This study aims to analyze the quality of a test instrument using the Rasch model with the assistance of the QUEST software. The analysis was conducted on ten test items developed as a learning evaluation tool. The results showed that only five items received responses from students and could be analyzed quantitatively. These five items demonstrated conformity with the Rasch model, as indicated by INFIT MNSQ values within the acceptable range and OUTFIT t values that met the item fit criteria. The analysis of item difficulty revealed that the instrument contained a range of difficulty levels, including easy, difficult, and very difficult items. However, the item reliability and person reliability values were classified as low, indicating that the consistency of the instrument and the stability of the measurement results were not yet optimal. In addition, several items did not function properly because they did not receive any student responses and therefore lacked empirical validity. Based on these findings, it can be concluded that the developed test instrument does not yet fully meet the criteria of a high-quality learning evaluation tool and still requires improvement, particularly in terms of item quality and instrument reliability.
Efektivitas Metode Pembelajaran Terhadap Hasil Belajar Biologi Siswa: Studi Independent Sample t-test Intan Oktaviani; Pramesti Ayu Lestari; Erliana Putri Isnanto; Khalishah Nabilla Putri; Muhammad Ilham Ardiansyah; Suwarto Suwarto
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 7, No 03 (2026): Agustus 2026
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v7i03.990

Abstract

This study aims to examine the differences in students’ learning outcomes between a control class and an experimental class that received different instructional treatments. The research employed a quasi-experimental approach with a pretest–posttest control group design. The research subjects consisted of two classes, each comprising 39 students. Data were collected through pretest and posttest instruments and analyzed using descriptive statistics and an independent samples t-test. The results of the pretest analysis indicated a significant difference in initial ability between the control and experimental classes, with a significance value of less than 0.05, although the mean difference was relatively small. The posttest analysis revealed a statistically significant difference in learning outcomes between the two groups. The mean posttest score of the control class was higher than that of the experimental class, with a Sig. (2-tailed) value 0.05 and a confidence interval that did not cross zero. These findings indicate that the instructional treatment implemented in this study had a significant effect on students’ learning outcomes. Therefore, it can be concluded that the instructional method used played a role in improving students’ learning achievement. The results of this study are expected to provide valuable insights for the development and selection of effective instructional strategiesin educational settings.
Co-Authors Erliana Putri Isnanto Intan Oktaviani Khalishah Nabilla Putri Pramesti Ayu Lestari Suwarto Suwarto