The Effect of Problem-Based Learning on Students’ Cognitive Ability in Vocational Fuel System Learning

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Published Jul 31, 2026
https://doi.org/10.62491/njpi.2026.v6i3-3
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Vol. 6 No. 3 (2026)

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Dance Putra Y. Tanesab
Universitas Nusa Cendana, Indonesia
https://orcid.org/0009-0001-3363-3109
Damianus Manesi
Universitas Nusa Cendana, Indonesia
https://orcid.org/0000-0003-2954-8603
Dzakwan Murtadlo Mukti
Universitas Nusa Cendana, Indonesia
Fahrizal
Universitas Nusa Cendana, Indonesia
https://orcid.org/0009-0009-4305-8038

Abstract

Purpose – This study aims to examine the effect of the problem-based learning approach on improving students’ cognitive ability in vocational fuel system learning.
Methods – A quantitative method with a one-group pretest posttest design was employed. The participants consisted of 37 eleventh-grade vocational students. Data was collected through cognitive tests, classroom observation, and documentation. Data analysis included normality testing, a one-sample t-test, and N-Gain analysis.
Findings – The results showed an increase in the mean score from 61.76 (pretest) to 84.32 (posttest). The posttest mean exceeded the minimum mastery criterion (75). Statistical testing indicated a significant result (p < 0.05). The N-Gain score of 0.60 was categorized as moderate, indicating a meaningful improvement in students’ cognitive ability.
Research Implications – The findings indicate that the problem-based learning approach contributes to improving students’ cognitive performance in vocational learning contexts, particularly in fuel system material. This study is limited to using a one-group pretest-posttest design and a single-class sample, which restricts causal inference and generalizability. Future studies are recommended to apply control group designs, larger samples, and broader contexts.

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How to Cite
Tanesab, D. P. Y., Manesi, D., Mukti, D. M., & Fahrizal, F. (2026). The Effect of Problem-Based Learning on Students’ Cognitive Ability in Vocational Fuel System Learning. Nusantara: Jurnal Pendidikan Indonesia, 6(3), 591–601. https://doi.org/10.62491/njpi.2026.v6i3-3
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