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All Journal Jurnal Elemen Jurnal Tadris Matematika (JTMT)
U-Sin, Nader
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Education Mathematics Other

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Comparison of Problem Based Learning and Guided Discovery Learning in Terms of Students’ Mathematical Problem-Solving Ability Stiadi, Elwan; Fitriani, Fitriani; Yanwar, Amanda Pradhani; U-Sin, Nader
JTMT: Journal Tadris Matematika Vol 5 No 2 (2024): Volume 05, Issue 2, December 2024
Publisher : Universitas Islam Ahmad Dahlan (UIAD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47435/jtmt.v5i2.2988

Abstract

This study is quasi-experimental research. This study was conducted in the eight grade at SMPN 4 Bengkulu City for the 2021–2022 academic year. Two experimental groups were selected randomly from eight classes. After performing normality and homogeneity tests, a sample of class A was made up of 31 students who received Problem Based Learning (PBL) model treatment and class C was made up of 30 students who received Guided Discovery Learning (GDL) model treatment. In this study, two types of data analyses—descriptive data analysis and inferential analysis—were used. The data on the students’ problem-solving ability before and after treatment were described using descriptive analysis. The t-test of two independent sample means, which compares the means of two separate samples, was used to compare differences in the efficacy of learning models with PBL and GDL on students' ability to solve mathematical problems. The result shows that the ability to solve mathematical problems on average using the PBL model and the GDL approach is equivalent.
Development of an android-based numeracy literacy test using iSpring Suite in a Bengkulu coastal context Stiadi, Elwan; Putra, Ari; Zainudin, M.; Areka, Meidy Putra; Rum, Ahbi Mahdianing; U-sin, Nader
Jurnal Elemen Vol 12 No 1 (2026): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v12i1.32841

Abstract

The Minimum Competency Assessment (MCA) is Indonesia’s national instrument for measuring foundational competencies, including numeracy literacy. However, findings from the Programme for International Student Assessment and the MCA indicate that many students still perform at low levels, partly because test items rely on limited, less contextualized problem settings. This study developed an Android-based numeracy literacy test using iSpring Suite by embedding items within the historical heritage context of the Bengkulu Coast to support students’ assessment preparation. The instrument was designed using the ADDIE model (analysis, design, development, implementation, and evaluation) and piloted with ninth-grade students in Bengkulu City, Indonesia. Data were collected through interviews, questionnaires, documentation, and item try-outs, and analyzed for content validity, reliability, practicality, item difficulty, and discrimination. The expert review confirmed the feasibility of the content, construct, and language. Empirical results for 10 items showed acceptable to strong validity, high reliability (0.781), difficulty levels ranging from easy to moderate, and discrimination indices from moderate to very good. The practicality score reached 84.7% (very practical), indicating that contextualized mobile-based assessment is a valid and practical alternative for numeracy learning.
Co-Authors Areka, Meidy Putra Ari Putra Elwan Stiadi Fitriani Fitriani M. Zainudin Rum, Ahbi Mahdianing Yanwar, Amanda Pradhani