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All Journal EDUCARE: Jurnal Pendidikan dan Kesehatan
Sarwidodo, Sarwidodo
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Dentistry Education Health Professions Languange, Linguistic, Communication & Media Mathematics Public Health

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Closing Competency Gaps through Problem-Based Learning in Automotive Vocational Education: Pre-Post Evidence from Chassis Management System Training Nugroho, Ryan Adi; Mindarta, Erwin Komara; Setyobudi, Haris; Christiawan, Ricky Andri; Abha, Afifuddin; Sarwidodo, Sarwidodo
EDUCARE: Jurnal Pendidikan dan Kesehatan Vol. 4 No. 1 (2026): EDUCARE: Jurnal Pendidikan dan Kesehatan
Publisher : Lembaga Penelitian Dan Publikasi Ilmiah (lppi) Yayasan Almahmudi Bin Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70437/jedu.v4i1.127

Abstract

Automotive vocational education requires learners to transfer technical knowledge into diagnostic and service decisions. This study examined changes in Chassis Management System brake-system competence after Problem-Based Learning (PBL)-supported instruction and whether gains converged toward high mastery. Complete paired pre-test and post-test scores from 34 Grade XI Ototronik students were analyzed using descriptive statistics, paired t testing, Wilcoxon sensitivity analysis, confidence intervals, Cohen's dz, normalized gain, mastery thresholds, and baseline-gain associations. Mean scores increased from 52.35 ± 13.27 to 92.65 ± 7.10, yielding a 40.29-point gain (95% CI 36.22-44.37), t(33)=20.13, p<0.001, dz=3.45. All students improved, 79.4% achieved high normalized gain, and 97.1% scored at least 80. Post-test dispersion decreased. PBL-supported instruction therefore coincided with large, universal gains and an upward competence-convergence pattern, although controlled studies are required for causal inference.
Co-Authors ABHA, Afifuddin Christiawan, Ricky Andri Erwin Komara Mindarta Nugroho, Ryan Adi SETYOBUDI, Haris