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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET)
Isana Supiah YL
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Materials Science & Nanotechnology Physics

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The Effectiveness of Problem-Based Learning Chemistry Modules and Their Impact on Students’ Critical Thinking Abilities Rika Wulandari; Isana Supiah YL
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.5757

Abstract

The research aims to assess the effectiveness of using problem-based learning-oriented chemical bonding modules in improving students' critical thinking skills. This study falls under the category of Research and Development with a four-D product development model. The research design employs a quasi-experimental approach with a post-test-only control group design using experimental and control classes for comparison. Effectiveness assessment is carried out using interview guidelines, observation sheets, and tests to determine students' critical thinking abilities. The effectiveness analysis technique involves independent sample t-tests and Cohern's effect size. The results of the independent sample t-test indicate a difference in students' critical thinking abilities before and after using problem-based learning-oriented chemical bonding modules. The effect size values suggest a moderate level of effective contribution, ranging from 0.20 to 0.80. Consequently, the research findings conclude that problem-based learning-oriented chemical bonding modules are effective in enhancing students' critical thinking skills
PROBLEM-BASED LEARNING IN SOLUTION CHEMISTRY: ITS IMPACT ON CRITICAL THINKING AND ACADEMIC ACHIEVEMENT OF AIR FORCE ACADEMY CADETS I Putu Bagus Mahendra; Isana Supiah YL
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 5 No. 7 (2026): JUNE
Publisher : RADJA PUBLIKA

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Abstract

This study aimed to analyze the effect of Problem-Based Learning (PBL) on critical thinking skills and academic achievement of Air Force Academy cadets in solution chemistry learning. The study employed a quasi-experimental design using a pretest–posttest control group design. The participants consisted of two classes, namely an experimental class taught using the PBL model and a control class taught using conventional learning. Data were collected using critical thinking questionnaires and chemistry achievement tests that have been validated and tested for reliability. The data were analyzed using descriptive statistics, normality and homogeneity tests, MANOVA, independent sample t-test, and N-Gain analysis. The results showed that the implementation of PBL had a significant simultaneous effect on critical thinking skills and academic achievement, as indicated by the multivariate test with p < 0.05. The univariate analysis also revealed significant differences between the experimental and control groups in critical thinking skills (p = 0.015) and academic achievement (p = 0.002). Furthermore, the N-Gain analysis indicated that the experimental class achieved higher improvement (0.2455) than the control class (0.1337), although both remained in the low category. These findings indicate that Problem-Based Learning contributes positively to improving cadets' critical thinking skills and academic achievement through active investigation, discussion, and contextual problem-solving activities. This study highlights the relevance of PBL implementation in military education, particularly in chemistry learning that requires conceptual understanding and analytical thinking skills.
Co-Authors I Putu Bagus Mahendra Rika Wulandari