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All Journal AUSTENIT International Journal of Trends in Mathematics Education Research (IJTMER)
Solehan, Muhamad
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Automotive Engineering Control & Systems Engineering Education Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Other

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Development of Digital Learning Media Based on Wingeom Software on Geometry Material at PGRI 3 Tempurejo Junior High School Sujiwo, Dimas Anditha Cahyo; Marsidi, Marsidi; Solehan, Muhamad
International Journal of Trends in Mathematics Education Research Vol 8, No 1 (2025)
Publisher : SAINTIS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33122/ijtmer.v8i1.375

Abstract

Digital learning media is one of the urgent factors in improving the quality of learning. It is said so because of the development of digital technology in the field of education that demands effectiveness and efficiency in learning and teaching. Development of learning media so that in the implementation of future learning is expected to be able to support the material delivered. This study aims to recognize media development in learning and test the feasibility of the WinGeom software learning media. Implementing the research and development (RD) research method of the ADDIE research model (analysis, design, development, implementation, and evaluation). The results obtained from this study are based on the assessment of the validator; namely, the material expert validator obtained a score of 45 out of 50 maximum scores with a percentage of 90% in the very feasible category. Media validation obtained a score of 40 out of a maximum score of 50 with a percentage of 80% and can be said to be feasible. Practitioner experts, namely those obtaining a score of 46 with a percentage of 92%, are in the very feasible category. As for student responses to the media that has been developed. The data results obtained with a percentage of 91% are categorized as very feasible for use in learning. In terms of student satisfaction in using Wingeom media, it shows that the majority of students (more than 60%) feel "very satisfied" with the use of Wingeom software in geometry learning. Furthermore, in terms of student learning outcomes before and after using Wingeom software, it shows an increase. These results are obtained from the average value of the pre-test, which is 59.7, and the average value of the post-test, which is 89.3. In the calculation of N-Gain, the N-Gain value is 0.73. These results indicate that Wingeom Software is very effective in improving students' conceptual understanding of flat geometry material.
PENGARUH PENDINGINAN METODE DOUBLE QUENCHING TERHADAP KEKERASAN PELAT BAJA KARBON RENDAH HASIL PACK CARBURIZING Firdaus, Firdaus; Sani, Almadora Anwar; Solehan, Muhamad
AUSTENIT Vol. 10 No. 2 (2018): AUSTENIT: Oktober 2018
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.384 KB)

Abstract

Tujuan dilakukan penelitian ini adalah untuk mengetahui pengaruh proses pendinginan dengan metode double quenching terhadap nilai kekerasan plat baja karbon rendah hasil pack carburizing dengan variasi waktu tahanan dan media karburasi arang tempurung kelapa. Proses karburasi adalah proses pengerasan permukaan pada logam untuk mendapatkan sifat keras pada permukaan dan sifat ulet pada bagian tengah logam. Pada penelitian ini, proses pack carburizing dilakukan pada temperatur 9000 C dengan 3 variasi waktu tahanan yang berbeda yaitu 1,5 jam, 2 jam dan 2,5 jam, dimana satu waktu tahanan menggunakan 3 spesimen uji. Komposisi media karburasi menggunakan 100% serbuk arang tempurung kelapa. Proses quenching pertama menggunakan air kemudian spesimen uji dipanaskan kembali diluar kotak karburasi pada temperatur 8000 C selama 1 jam dengan oli sebagai media quenching kedua. Dari hasil pengujian kekerasan diperoleh nilai kekerasan rata-rata spesimen uji dengan watu tahanan 1,5 jam sebesar 92,5 HRB, waktu tahanan 2 jam sebesar 95,8 HRB dan waktu tahanan 2,5 jam sebesar 92,9 HRB. Sedangkan hasil pengujian struktur mikro pada permukaan spesimen uji sebelum pack carburizing terlihat fasa ferit dengan sedikit fasa perlit dan pada permukaan spesimen uji setelah pack carburizing terdapat fasa ferit ang semakin sedikit dengan fasa perlit yang semakin banyak.
Co-Authors Dimas Anditha Cahyo Sujiwo Firdaus Firdaus Sani, Almadora Anwar