Journal of Mathematics Education and Science

Aplikasi Aljabar Max-Plus dan Petri Net dalam Penentuan Waktu Optimal Produksi Tempe di Pabrik Tempe Asli Hb Samarinda

Isna Nadia Khairina — 2025-05-14

Production time efficiency plays an important role in the food industry, including at the Tempe Asli HB Samarinda factory. The tempeh production process involves several lengthy stages, such as the preparation of raw materials, fermentation, and acidification. To optimize scheduling, Max-Plus algebra can be applied to enhance the effective and efficient use of production time. This study aims to construct a model of the tempeh production system using Petri Nets and to solve the tempeh production time problem by optimizing production time using Max-Plus Algebra. The research data was obtained through interviews with the branch manager of the Tempe Asli HB Samarinda factory. Petri nets were used to construct a coverability tree, which was subsequently transformed into a Max-Plus Algebra model. Subsequently, a model simulation was performed using production time data starting at t. The results of this research indicate that the optimal or minimum production time for tempeh is 3 days 6 hours and 57 minutes after production begins.

Mathourism di Keraton Sumenep Sebagai Pendekatan Baru dalam Sustainable Tourism Development: dalam Perspektif Pembelajaran

Umi Hanik — 2025-05-05

This study explores the potential of mathourism at the Sumenep Palace as a new approach to sustainable tourism development, particularly from an educational perspective. The research was conducted using a library research method by analyzing various literature related to culture, architecture, tourism, and education. Sumenep Palace serves as a tangible example of cultural acculturation, representing diversity and harmony. These elements not only offer aesthetic value but also provide opportunities for integration into mathematics learning, especially in introducing geometric and symmetry concepts. Mathourism, which combines mathematics with culture-based tourism, aligns with the principles of sustainable tourism. This approach emphasizes cultural preservation, local community involvement, and experiential learning. Moreover, mathourism holds potential for empowering local communities through active participation in cultural preservation and the management of education-based tourist destinations. The results of the study indicate that the mathourism approach can support interdisciplinary learning that is relevant to real-life contexts while also enhancing the appeal of culture-based tourism at Sumenep Palace by integrating mathematical concepts with local cultural and historical contexts. This study is expected to serve as a foundation for further research, particularly in the development of mathourism-based learning modules and their implementation at other tourist destinations with similar cultural richness.

The Effect of Problem-Based Learning Model Assisted By Learning Animation Video on Student Learning Outcomes

Siti Khoiriyah — 2025-04-25

The purpose of this study is to determine the effect of a problem-based learning model supported by educational animation videos on students' learning outcomes. The research approach used is quantitative with a quasi-experimental design. The population of this study consists of seventh-grade students, with class VII-C serving as the control group and class VII-D as the experimental group, each consisting of 31 students. The results of the study indicate that the problem-based learning model assisted by educational animation videos yields better results than direct learning, as evidenced by the average scores increasing from 62.081 to 84.613 in the experimental class, while the control class improved from 63.048 to 79.452. Hypothesis testing using the t-test also supports this finding, with a t-table value of 2.00 at a 5% significance level, while the calculated t-value is 2.669. Therefore, since the calculated t-value is greater than the t-table value (2.669 > 2.00), it can be concluded that there is an effect of the problem-based learning model assisted by educational animation videos on students' learning outcomes.

Analysis of Student Errors in Solving Differential Calculus Problems on Absolute Inequalities and Functions Continuity

Titin Supriyatin — 2025-04-28

his study aims to analyze the errors made by students in solving differential calculus problems, particularly in the topics of absolute value inequalities and the continuity of functions. The research involved 64 students from the Biology Education Program at Universitas Indraprasta PGRI who were enrolled in a differential calculus course during the spring semester of the 2024/2025. The research method employed was a descriptive qualitative approach with error analysis. Data was collected by administering differential calculus problems involving absolute value inequalities and function continuity, which were then analyzed based on the types of errors made by the students. By using radatz the Error Analysis Theory , that The results showed that the errors made by students could be categorized into two main types: conceptual errors and computational errors. Conceptual errors included a lack of understanding in applying the definition of absolute value inequalities in certain cases, as well as difficulties in identifying points of discontinuity in functions. Computational errors were related to inaccuracies in performing differential calculations and in applying basic calculus theorems related to function continuity. These findings highlight the need for a more comprehensive teaching approach to strengthen students' understanding of fundamental theory and technical skills, as well as the importance of diverse problem-solving practice to reduce errors in concept application. This study is expected to contribute to the development of more effective strategies for teaching differential calculus among students.

Analisis Pengaruh Jumlah Nilai Taksiran Dan Uang Pinjaman Terhadap Laba Bersih PT. Pegadaian Kanwil XII Surabaya

Syahrotul Hidayati — 2025-04-25

PT. Pegadaian is a state-owned company that focuses on secured loans. PT. Pegadaian assesses the property used as collateral before providing a loan. The purpose of this study is to see how the number of appraisals and loan money has an impact on PT. Pegadaian's net profit both partially and simultaneously. This study uses multiple linear regression analysis. The research sample and population were PT. Pegadaian Kanwil XII Surabaya, which reported the appraisal value, loan amount, and net profit during the period 2020-2023. The results showed that the net profit of PT. Pegadaian was not partially influenced by the loan and appraisal variables. This may indicate a correlation that is not strong, a significant variable that is not taken into account, or a non-linear correlation that has not been detected. However, PT. Pegadaian net profit is influenced by both variables simultaneously.