Shohihatur Rohman
Universitas Negeri Semarang, Kota Semarang, Indonesia

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Keefektifan E-Modul Pembuatan Blok V terhadap Hasil Belajar Teknik Pemesinan Frais: Studi Eksperimen pada Siswa Kelas XI Teknik Pemesinan SMK Fahrul Kurniawan; Shohihatur Rohman
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 1 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i1.112589

Abstract

This study aims to test the effectiveness of using E-Modules on V-block manufacturing competencies towards the cognitive learning outcomes of 11th-grade Mechanical Engineering students. We used a quasi-experimental method with a nonequivalent control group design. The sample included 34 students purposively selected based on material completion criteria. Data was collected through multiple-choice tests given before and after the treatment in the experimental class. The collected data was analyzed using descriptive statistics and the Wilcoxon test since it wasn't normally distributed. The results showed a significant increase in the class's average score, going from 69.15 in the pretest to 89.91 in the posttest. Hypothesis testing also confirmed a statistically significant difference in concept understanding. The normalized gain score analysis put the effectiveness of this media in the medium category. The study concludes that using E-Modules is moderately effective in helping students independently master concepts and work procedures, making it a good alternative solution to overcome the lack of practical facilities in vocational high schools.
The The Effectiveness of E-Module in Straight Gear Manufacturing on Learning Outcomes of Milling Machine Engineering: The Effectiveness of E-Module in Straight Gear Manufacturing on Learning Outcomes of Milling Machine Engineering Nova Fahrizal Rahmatdani; Shohihatur Rohman
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 1 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i1.112653

Abstract

Penelitian ini dilatarbelakangi oleh terhambatnya proses pembelajaran praktik di SMK Negeri 1 Semarang akibat renovasi workshop, sehingga memerlukan media pembelajaran alternatif berupa e-modul pada materi pembuatan roda gigi lurus. Tujuan utama penelitian ini adalah untuk mendeskripsikan keefektifan implementasi e-modul terhadap peningkatan hasil belajar kognitif siswa pada mata pelajaran Teknik Pemesinan Frais. Metode deskriptif kuantitatif diterapkan dengan sampel penelitian sebanyak 34 siswa kelas XI Teknik Mesin yang dipilih melalui teknik purposive sampling. Hasil validasi ahli menunjukkan bahwa e-modul sangat layak digunakan, dengan persentase kelayakan sebesar 95,50% untuk media, 95,00% untuk materi, dan 81,25% untuk instrumen tes. Data hasil belajar menunjukkan peningkatan skor rata-rata kelas yang signifikan, dari 69,27 pada pretest menjadi 83,09 pada posttest. Pengujian hipotesis menggunakan Wilcoxon Signed Rank Test menghasilkan nilai signifikansi 0,000 (p < 0,05), yang mengonfirmasi adanya pengaruh positif nyata dari penggunaan e-modul terhadap kompetensi siswa. Analisis keefektifan melalui skor N-Gain menghasilkan nilai rata-rata 0,31 yang termasuk dalam kategori sedang. Penelitian ini menyimpulkan bahwa e-modul pembuatan roda gigi lurus terbukti efektif dan menjadi solusi yang layak untuk menjembatani keterbatasan fasilitas praktik di sekolah menengah kejuruan. This research is motivated by the disruption of the practical learning process at SMK Negeri 1 Semarang due to workshop renovations, necessitating alternative learning media in the form of e-modules for the straight gear manufacturing topic. The primary objective of this study is to describe the effectiveness of implementing these e-modules on improving students' cognitive learning outcomes in the Milling Machine Engineering subject. A descriptive quantitative method was employed, with a research sample of 34 Grade XI Mechanical Engineering students selected via purposive sampling. Expert validation results indicate that the e-module is highly feasible, with feasibility percentages of 95.50% for media, 95.00% for material, and 81.25% for test instruments. Learning outcome data demonstrated a significant increase in the class average score, from 69.27 in the pretest to 83.09 in the posttest. Hypothesis testing using the Wilcoxon Signed Rank Test yielded a significance value of 0.000 (p < 0.05), confirming a tangible positive influence of e-module usage on student competence. Effectiveness analysis through N-Gain scores resulted in an average value of 0.31, categorized as medium. The study concludes that the straight gear manufacturing e-module is proven effective and serves as a viable solution to bridge the limitations of practical facilities in vocational schools.
The The Influence of K3 Understanding on K3 Implementation in Motorcycle Engineering Expertise Competencies : The Influence of K3 Understanding on K3 Implementation in Motorcycle Engineering Expertise Competencies Irfan Kurniawan; Shohihatur Rohman; Kriswanto
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.113632

Abstract

This study aims to analyze the effect of Occupational Safety and Health understanding on the implementation of safety practices among students during workshop activities in the Motorcycle Engineering competency at SMK Muhammadiyah 2 Semarang, which is motivated by the low level of student safety behavior. The study employed a quantitative descriptive approach with a sample of 26 students. Data were collected through observation, interviews, and a 20-item Likert-scale questionnaire, and analyzed using validity, reliability, normality tests, and simple linear regression with SPSS. The results indicate that the instrument is valid and reliable with a Cronbach’s Alpha value above 0.80, and the data are normally distributed. Regression analysis shows that Occupational Safety and Health understanding has a significant effect on its implementation, with a significance value of less than 0.01 and a coefficient of determination of 0.601, indicating that 60.1 percent of safety practice implementation is influenced by students’ understanding, while the remaining is affected by other factors. These findings confirm that higher levels of safety understanding lead to better safety behavior during practical activities. This study highlights the importance of strengthening practice-based safety learning, developing consistent safe work habits, and enforcing supervision to improve safety implementation in vocational schools.the abstract in English here. If articles in English, abstract in Indonesia language do not need to be included. Writing abbreviations and mathematical formulas in the abstract needs to be avoided. The abstract consists of summary of the research objectives, approaches or methods used, important results and conclusions.