Ajib Afindala, Samsudin Anis, Rini Kusumawardani

The Implementation of a Project-Based Learning Jobsheet in Teaching Electrical Systems of Light Vehicle Bodies

Introduction

The implementation of a project-based learning jobsheet in teaching electrical systems of light vehicle bodies. Boost vocational students' psychomotor competencies in light vehicle electrical systems using a project-based learning jobsheet with interactive QR codes & simulations. Proven effective and feasible.

Abstract

One of the challenges faced in the recent learning process is that students have low psychomotor competency in learning job sheets related to the electrical systems of light vehicle bodies, such as in the lighting system, power window, sign lamp system, mirror cleaning system, and AC system. The use of unengaging job sheets led to low learning motivation and a decline in students’ psychomotor competencies. This study aimed to investigate the impact of a project-based learning job sheet on enhancing the psychomotor competencies of vocational students in the electrical systems of light vehicle bodies, including components such as the lighting system, power windows, signal lamp system, mirror cleaning system, and air conditioning system. This job sheet incorporated an innovative approach by integrating interactive visuals via QR codes, providing tutorial simulations of electrical systems in light vehicle bodies. This job sheet assisted students in understanding the material while encouraging active participation, collaboration, and high learning motivation. The present study employed research and development (R&D) using the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The research subject of this study is XI grade students of Light Vehicle Engineering at Vocational (SMK) Gardua Nusantara Karanggawen with applied quantitative approach. The data collection technique used a pre-test and a post-test, with the results analyzed using linear regression through the SPSS application. The validation result of the media and material experts showed that the developed job sheet is very feasible with an average score of 4.83 (scale of 5). The practicality test carried out by the teacher achieved 86.55%, or it was declared as very practical. The jobsheet effectivity was proven through N-Gain significant score in the experimental class, which gained 76.94%, while the control class achieved 26.70%. In conclusion, the project-based learning job sheet is effective in enhancing students’ psychomotor competencies and has become a feasible medium for instruction.

Review

This study addresses a critical challenge in vocational education: the low psychomotor competency and motivation of students in learning complex electrical systems of light vehicle bodies using conventional, unengaging job sheets. The authors propose an innovative solution in the form of a project-based learning (PBL) job sheet, specifically designed to enhance student engagement and practical skills. A notable feature of this developed resource is its integration of interactive visuals via QR codes, offering tutorial simulations that aim to provide a more dynamic and accessible learning experience for vocational students, covering systems such as lighting, power windows, and AC. Employing a robust Research and Development (R&D) methodology guided by the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), the study investigated the effectiveness of this PBL job sheet with XI grade students of Light Vehicle Engineering. Data was collected through pre-test and post-test measures, and analyzed using linear regression, complemented by N-Gain scores. The findings strongly support the utility of the developed job sheet: it achieved a "very feasible" rating from media and material experts (average 4.83/5), and was deemed "very practical" by teachers (86.55%). Crucially, the experimental class demonstrated a significantly higher N-Gain score of 76.94%, compared to the control class's 26.70%, unequivocally indicating its effectiveness in improving psychomotor competencies. In conclusion, this research convincingly demonstrates that the project-based learning job sheet, incorporating interactive QR code-based simulations, is a highly effective and feasible instructional medium for enhancing vocational students’ psychomotor competencies in the electrical systems of light vehicle bodies. The study’s rigorous R&D approach and clear quantitative evidence of feasibility, practicality, and effectiveness are significant strengths. This work provides valuable insights for educators seeking to improve hands-on skill development and student motivation in technical fields, offering a replicable model for developing engaging and impactful learning materials.

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