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

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Project-Based Learning and the Consistency of Dial-Indicator Competency Gains in Automotive Vocational Education: A Quasi-Experimental Pretest-Posttest Study Ferdianto, Naufal; Mindarta, Erwin Komara; Rudhiantoro, Edhy; Pramono, Heri; Musholli, Musholli
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.v4i1.128

Abstract

Precision measurement requires automotive vocational students to integrate conceptual knowledge with accurate instrument setup, reading, interpretation, and procedural control. This quasi-experimental pretest-posttest study examined whether Project-Based Learning (PjBL) was associated with larger and more consistent gains in Grade X students’ dial-indicator competency. Sixty-four students from two intact Light Vehicle Engineering classes participated (32 PjBL; 32 control). Baseline performance was equivalent (46.41 ± 7.21 vs 46.56 ± 7.01; p = .930). Both groups improved substantially. Mean gain was 42.19 ± 4.00 under PjBL and 39.22 ± 11.99 in the control group; the 2.97-point advantage was not statistically significant (Welch p = .192; Hedges’ g = .33). Gain dispersion differed markedly: control-group variance was 8.97 times the PjBL variance, with robust variance tests p < .001. PjBL was therefore associated more clearly with consistency of competency development than with superior average gain. Multiclass replication with validated performance assessment is warranted.
Co-Authors Erwin Komara Mindarta Heri Pramono Musholli, Musholli Rudhiantoro, Edhy