PENGARUH ALAT INSTRUKSI MOTOR BAKAR TERHADAP TARUNA AKADEMI TNI ANGKATAN LAUT KORP TEKNIK

This study aims to analyze the influence of internal combustion engine instructional tools on the competency achievement of cadets at the Indonesian Naval Academy Technical Corps. Using a mixed-methods research approach with sequential explanatory design, this study involved 160 cadets divided into experimental group (n=80) and control group (n=80). Quantitative data were collected through knowledge competency tests, practical skills assessments, and attitude scales, while qualitative data were obtained through in-depth interviews, focus group discussions, and participatory observations. The results showed that internal combustion engine instructional tools had a positive and significant effect on cadet competency achievement in three domains: knowledge (Cohen's d = 1.56), practical skills (Cohen's d = 2.68), and learning attitudes (Cohen's d = 1.62). Multivariate analysis showed that the use of internal combustion engine instructional tools explained 68.8% of the variance in the combination of cadet competencies (Wilks' Lambda = 0.312, p<0.001). Qualitative findings identified four main themes: enhanced conceptual understanding, hands-on skills development, increased motivation and engagement, and implementation constraints. Mediation analysis showed that attitude served as a partial mediator in the relationship between instructional tools and competency achievement. The results confirm that internal combustion engine instructional tools are a crucial determinant factor in technical competency achievement, with significant implications for military technical education curriculum development and Indonesian Navy operational readiness.