The phenomenon of bilingualism and diglossia often occurs in societies that have more than one language, where individuals can choose a language based on the situation and the person they are talking to. This study aims to understand the perception of the use of regional languages by the Batak Toba and Mandailing ethnic groups in everyday communication. Qualitative methods were used with observation and interview techniques with students of the Geography Education Department at Medan State University. Based on the results of the study, it can be concluded that the Batak Toba ethnic group more often uses regional languages in communication with fellow ethnic groups, both on and off campus. Meanwhile, the Mandailing ethnic group shows flexibility in language use, with a tendency to use Indonesian more often, especially in the campus environment. Keywords: Batak Toba ethnicity, communication, Language choice, Mandailing ethnicity, sociolinguistics.

This study was conducted under the title “Development of Indonesian Language Learning Media Based on Animated Videos for Grade VII MTs Swasta Darul Ulum Budi Agung Descriptive Text Material,” which was motivated by low student motivation and understanding of descriptive text lessons. This situation occurred because attractive and interactive learning media were rarely used, causing students to tend to be passive in the learning process. The research methodology employed the Research and Development (R&D) method using the ADDIE development model, which includes Analysis, Design, Development, Implementation, and Evaluation. The research population consisted of students at Darul Ulum Budi Agung Private Islamic Junior High School, with a sample size of 30 students in the experimental group and 30 students in the control group. Data collection was conducted using interviews, tests, and questionnaires. Validation was provided by experts in the fields of content, media, and language. This study shows that the use of educational media in the form of animated videos falls under the category of highly suitable for use, both in terms of content and presentation. This media is capable of enhancing students' learning motivation, clarifying their understanding of descriptive text concepts, and creating a more engaging and interactive learning environment. In other words, the use of animated videos can serve as an innovative solution as a learning medium for Indonesian language, particularly descriptive text material, to improve the quality of education at MTs Swasta Darul Ulum Budi Agung.

Learning the concepts of Greatest Common Factor (GCF) and Least Common Multiple (LCM) at the elementary school level faces significant challenges due to their abstract and complex nature. This study aims to develop and evaluate the effectiveness of innovative learning strategies using the congklak game in enhancing students' understanding of GCF and LCM concepts. The research employed a Research and Development (R&D) methodology with the ADDIE model, involving 14 fifth-grade students from SDS Nahdlatul Ulama Medan as research subjects. The congklak game was developed as an interactive learning tool that integrates traditional game elements with mathematical concepts. Implementation was conducted through structured phases including needs analysis, media design, prototype development, learning implementation, and outcome evaluation. Research findings demonstrate significant improvements in students' conceptual understanding and learning outcomes. The use of congklak media successfully created contextual learning experiences that enabled students to visualize abstract GCF and LCM concepts through manipulation of congklak seeds. This strategy also increased active student engagement, promoted collaborative learning, and created an enjoyable learning atmosphere. Data analysis showed improved average student scores and higher learning mastery rates compared to conventional teaching methods. This study provides practical contributions to the development of mathematics teaching strategies at the elementary school level, particularly in teaching GCF and LCM concepts. The research findings recommend the use of congklak media as an effective alternative for enhancing the quality of meaningful mathematics learning oriented toward conceptual understanding.

This study aims to understand how the use of the game congklak can contribute to improving the numeracy skills of grade II elementary school students. Using a qualitative approach through a case study, this research involved students, teachers, and parents as resource persons to gain in-depth insights into the role of games in the math learning process. The research subjects were grade II students at SDS Islam Ulul Albab. The findings show that congklak can be an effective tool in helping students hone their numeracy skills. In addition to offering a fun way to learn, this game also helps train social skills, critical thinking, and strategy application. Based on observations and interviews, students were more active and enthusiastic when learning math through congklak, and were able to relate the subject matter to everyday life situations. Overall, congklak proved to be not only an interesting learning medium, but also has an important role in supporting students' cognitive and social development, so it has the potential to be an effective learning innovation at the primary school level.

Active learning is an instructional approach that positions students as central participants in the learning process through interactive, collaborative, and reflective activities. This study aims to examine the implementation of active learning strategies in enhancing student engagement at the elementary school level. A literature review method was employed, analyzing 20 national and international scholarly articles published between 2019 and 2024. The findings indicate that strategies such as Problem-Based Learning, cooperative learning, and experiential learning effectively increase students' participation, motivation, and academic achievement. The integration of digital media and educational games also contributes positively to students’ focus and emotional engagement during lessons. However, several implementation challenges were identified, including limited teacher competence, insufficient learning facilities, and time constraints within the curriculum. These findings highlight the importance of policy support, continuous teacher training, and the provision of adequate learning resources to ensure the optimal application of active learning in elementary classrooms. Therefore, active learning emerges as a strategic solution to improve the quality of primary education by fostering student-centered and engaging learning experiences.

This study aims to analyze the optimization of seaweed seedling inventory management using the Economic Order Quantity (EOQ) method to enhance cost efficiency for farmers in Tarakan City. The research employs a quantitative descriptive approach, integrating EOQ with forecasting techniques (Moving Average and Exponential Smoothing) to predict raw material needs accurately. Data were processed using Microsoft Excel and POM-QM for Windows to ensure precision. The results indicate that EOQ yields an optimal order quantity of 878 ropes per order, with a frequency of 6 orders per year, a reorder point of 16 ropes, and a total inventory cost (TIC) of IDR 842,681. Compared to traditional methods (TIC IDR 2,132,083), EOQ reduces costs by 60.5%. Forecasting analysis reveals that Exponential Smoothing (MAPE 19.67%) outperforms Moving Average (MAPE 22.5%) in accuracy. These findings highlight EOQ’s effectiveness in minimizing waste, preventing stockouts, and improving productivity. The study provides practical insights for coastal small-scale farmers and policymakers in the marine sector.

The development of information technology has encouraged university libraries to innovate in disseminating information more effectively. Institutional repositories are present as one of the information repackaging products that aim to collect, manage, and disseminate scientific works of academicians in digital form. Repositories can be viewed as valuable assets of an institution that function as a means to improve the reputation of the institution. This study was implemented through a quantitative approach with a descriptive method. This approach was chosen to provide a systematic, factual, and accurate picture of the effectiveness of the directory as an information repackaging product at the Padang State University Library. The results of the study indicate that the use of information repackaging is in the high category in terms of reasons for use, interaction, and results felt by users, although there are still challenges in the completeness and personalization of content. This study recommends the need for continuous evaluation, development of more diverse information formats, and increasing librarian competence in understanding user needs so that the repository can function optimally as a medium for disseminating information and supporting the position of the institution.

Hyperlipidemia is a condition in which lipid levels in the bloodstream (plasma) experience an imbalance in lipid levels, although it does not show severe symptoms but can trigger various serious diseases. Statins are used as the main therapy for antidyslipidemia, but with long-term use, statins cause various side effects such as muscle pain, muscle disorders and muscle discomfort. Indonesia has a variety of plants that have benefits for lowering blood cholesterol levels. To determine the potential of metabolite compounds contained in several plants as HMG-COA Reductase inhibitors, research can be carried out using molecular docking. The purpose of this literature study is to determine the comparison of compounds that have HMG-COA Reductase inhibitor inhibitor activity. The method used in compiling this literature study is from various national and international scientific articles published in the period 2020-2025. The natural compounds that have been studied have significant inhibitory activity against the HMG-CoA Reductase enzyme, namely from the 10 plants studied, Rhodomyrtus tomentosa has the best activity in inhibiting the HMG-CoA Reductase enzyme with an Affinity of the Binding value of -11.4 so that it has the potential to be further developed as a natural anti-cholesterol drug.

Micro, Small, and Medium Enterprises (MSMEs) play a significant role in national economic growth. In today’s digital era, leveraging technology—particularly social media—has become an essential marketing strategy to ensure business sustainability. Lapak Kirani, a culinary MSME located in Bima City, has faced challenges in optimizing social media as a promotional tool. This community service program aimed to assist Lapak Kirani in independently managing digital marketing by providing training on social media account creation, promotional content development, and effective caption writing. The implementation method consisted of four stages: observation, socialization, mentoring, and evaluation. The results indicated an improvement in the MSME owner's understanding and skills in executing digital marketing strategies. This assistance is expected to expand product marketing reach and enhance the competitiveness of MSMEs in a sustainable manner.

Turmeric is a spice commodity that has high economic market potential. However, the utilization of turmeric, especially in Kunden Village, Sukoharjo Regency is still limited in terms of processing innovation, and creates organic waste that has not been optimally utilized, namely turmeric leaves. The Village Development Program, carried out a zero waste-based transformation through the manufacture of gummy spices from rhizomes and liquid organic fertilizer from turmeric leaf waste. This activity is with the farmer women's group of Tani Lestari, with stages of socialization, training, and practice. The results of this program show that the farmer women's group of Tani Lestari members are able to understand product processing innovations in the form of turmeric gummy and optimize turmeric leaf waste into liquid organic fertilizer. Gummy turmeric is a functional food product that is good for health, while liquid organic fertilizer is an alternative to reducing organic waste from turmeric leaves to support sustainable agriculture. The provision of e-modules strengthens the sustainability of the program even after the activity has ended. Zero waste-based innovation not only encourages community participation, especially farmer women's group in village development based on local resources, but also creates a community that is adaptive to progress.