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All Journal JUPE : Jurnal Pendidikan Mandala OMEGA: Jurnal Keilmuan Pendidikan Matematika
Nina Faoziyah
Universitas Muhammadiyah Tegal
Education Mathematics

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Analysis of mechanical engineering students' errors in solving calculus problems on function derivatives Nina Faoziyah; Didi Kusaeri
OMEGA: Jurnal Keilmuan Pendidikan Matematika Vol. 5 No. 2 (2026): OMEGA: Jurnal Keilmuan Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Alwashliyah Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/jkpm.v5i2.1306

Abstract

Understanding calculus concepts, especially derivatives, is very important for Mechanical Engineering students to apply mathematical principles in an engineering context. This study aims to analyze the types of errors made by students when solving derivative problems and the factors that influence these errors. The approach used is descriptive qualitative with 30 students of the Mechanical Engineering Study Program at Tegal Muhammadiyah University in the 2025/2026 academic year. Data were collected through written tests and interviews, then analyzed using triangulation to ensure validity. The results of the study show that there are three main categories of errors: conceptual, procedural, and technical. Conceptual errors occurred due to a weak understanding of derivative principles. Procedural errors arose when students understood the concept but made mistakes in symbolic manipulation, while technical errors stemmed from mechanical errors, such as copying questions or incorrect arithmetic calculations. Learning strategies that emphasize conceptual understanding and gradual practice can help reduce student errors.
Implementation of Project-Based Learning in Electrical Engineering Materials to Improve Character Education of Engineering Students Doni Setiawan; Nina Faoziyah
JUPE : Jurnal Pendidikan Mandala Vol 11 No 2 (2026): JUPE : Jurnal Pendidikan Mandala (Juni)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/ahzk2m39

Abstract

This study aims to describe the implementation of the Project Based Learning (PjBL) model on Electrical material and its impact on Improving Character Education of Engineering Students. The main project implemented is the creation of a group Electrical Circuit Project. The type of research is Classroom Action Research which was carried out for two cycles with 15 Electrical Engineering and Mechanical Engineering students as subjects. The results of the analysis of assessment, observation, and documentation show that the implementation of Project Based Learning through the electrical circuit creation project is significantly able to increase collaboration, concern, and sharing of tasks among students, which are key indicators of mutual cooperation. This increase is evidenced by the percentage of completion of mutual cooperation attitudes which was originally 40% in the pre-action, increased to 73% in cycle I (Good category), and reached 93% in cycle II (Very Good category). This study concludes that the Project Based Learning model with electrical circuit projects is effective in fostering mutual cooperation attitudes in students.
Co-Authors Didi Kusaeri Doni Setiawan