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The application of Mastery Learning in Olympiad mentoring at Darussalam Islamic Junior High School was carried out using a classroom action research model involving 20 students from grades 8 and 9. The mentoring process followed a cyclical structure consisting of planning, action, observation, and reflection, supported by observation techniques, tests, and documentation. The implementation of the mastery learning model effectively improved students’ mathematics learning outcomes, as shown by a significant increase in mastery levels: 65% before the intervention, 75% after the first cycle, and 90% after the second cycle. In addition, the average learning score rose from 71 in the first cycle to 87 in the second cycle, reflecting substantial progress in understanding and problem-solving abilities. These results indicate that Mastery Learning not only enhances students’ mathematics performance but also strengthens their readiness and confidence to compete in the National OSN competition, demonstrating the model’s positive contribution to academic achievement and Olympiad preparation.

In the learning process, educators often face challenges in helping students achieve optimal learning outcomes. One of the contributing factors is the dominance of teacher-centered learning models, which frequently leads to low student engagement and reduced motivation. This condition affects students’ curiosity, particularly in Science learning, which requires active participation and exploration. Therefore, innovative teaching materials are needed to encourage student involvement while simultaneously stimulating their curiosity. One alternative that can be utilized is the Student Worksheet (Lembar Kerja Peserta Didik/LKPD), which can be designed systematically and contextually to support active learning. This study aims to determine the effectiveness of using LKPD in enhancing students’ curiosity in Grade VII Science learning at SMPN 1 Sanrobone. The research employed a Classroom Action Research (CAR) approach carried out in two cycles, each consisting of planning, implementation, observation, and reflection stages. The findings indicate a significant increase in students’ curiosity after the implementation of LKPD, as shown by improvements in questioning behavior, interest in the material, and the ability to observe and explore scientific phenomena. Based on these results, it can be concluded that the use of LKPD is effective in fostering students’ curiosity and contributes to a more interactive and meaningful Science learning experience.

This community service program aims to enhance public awareness and skills in managing household waste through an innovative recycling-based approach. The main problems identified in the target community include limited understanding of waste segregation, lack of knowledge regarding the economic potential of household waste, and insufficient skills to transform waste materials into useful products. To address these issues, the program was implemented through several stages, including an initial survey to identify community needs, environmental education and awareness sessions, hands-on training on producing recycled products, and continuous mentoring to ensure the sustainability of the activities.The results show a significant increase in participants’ knowledge of proper waste management and recycling concepts. Moreover, the community successfully produced various creative and functional recycled items such as plant pots, household crafts, and other aesthetically valuable products with economic potential. The program also facilitated the establishment of a resident group committed to continuing the initiative independently. Overall, this community service activity demonstrates that practical environmental education can effectively foster ecological awareness, strengthen community participation, and create opportunities for local economic empowerment through the utilization of household waste.

Population growth and lifestyle changes in Indonesia have led to complex waste management issues, negatively impacting social, health, and environmental sustainability aspects. To address this, a sustainable management approach that actively involves community participation is necessary. The concept of a Waste Bank, based on the 3R principles (Reduce, Reuse, Recycle), emerges as a strategic, community-based solution. This community service program aims to encourage active community participation in the Waste Bank program in Tanjung Uban Selatan, Bintan Regency, while supporting the realization of a Smart City based on intelligent and participatory environments. The methodology used is a qualitative approach to gain in-depth understanding. Primary data collection was carried out through interviews, participatory observations, and documentation studies. Key informants were purposively selected from various stakeholders, including Waste Bank administrators, local government representatives, and community members. The results show that, although initially challenging to increase community participation, the program has had a significant positive impact. It successfully shifted the community's view of waste as a valuable economic resource. Quantitatively, this is reflected in stable income from the sale of high-quality inorganic waste, such as metals and electronic waste. The program also led to strategic innovations, including sustainable education, waste savings incentives, social media use, and the "Dasi Umat" empowerment program. The success of this program, strengthened by awards at the district and national levels, makes it a model for sustainable waste management focused on community empowerment and supporting smart city development.

The problem of waste in rural areas is still a serious issue that has an impact on environmental health and the quality of life of the community. Batu Licin Village, Gunung Lengkuas Village, East Bintan District, Bintan Regency is one of the areas that faces similar problems, where household waste is still scattered and has not been handled optimally. This community service activity offers innovative solutions through the manufacture of rocket stoves as a means of efficiently burning certain organic and inorganic waste, as well as the construction of garbage booths as a place to store and sort waste before further processing. The implementation method involves counseling to residents, making prototypes, and direct practice of using rocket stoves and garbage booths by local communities. In addition, this activity also emphasizes the importance of changing community behavior in managing waste with the 3R (reduce, reuse, recycle) principle. The results of the activity show an increase in public awareness in managing waste independently, reducing the accumulation of waste in the village environment, and the emergence of alternative waste processing that is environmentally friendly, energy-efficient, and easy to apply. This innovation not only helps overcome the problem of household waste, but also provides educational value and empowers the community in maintaining the cleanliness and sustainability of the village environment. With the implementation of rocket stoves and garbage booths, it is hoped that a cleaner, healthier, and more viable village environment will be created in the long term.

Public literacy regarding health rights remains low, especially in communities with limited access to legal and health-related information. This lack of understanding often leads to unfulfilled rights and unequal access to quality healthcare services, contributing to a cycle of inequity and poor health outcomes. In response to this issue, this community service program seeks to enhance public awareness of health rights through interdisciplinary education, combining the expertise of lecturers from legal and health sciences. The program’s activities include the development of educational modules designed to provide clear, accessible information about health rights, as well as interactive legal-health counseling sessions aimed at addressing specific concerns. Group discussions serve as a platform for individuals to engage with experts and peers, furthering their understanding of how to navigate healthcare systems and advocate for their rights. Additionally, printed materials are distributed to reinforce learning and serve as ongoing references for participants. The program targets communities with high needs for health literacy, focusing on empowering individuals to recognize their rights and take action to ensure their healthcare needs are met. It also encourages the collaboration of interdisciplinary academic staff, fostering a collective approach to community empowerment. By improving health literacy, the program aims to promote social equity and improve access to quality healthcare services for underserved populations. Through this initiative, participants are better equipped to make informed decisions regarding their health and advocate for fair treatment in the healthcare system.

Indonesia is prone to natural disasters because it is located at the confluence of three active tectonic plates. This condition causes high earthquake, volcano, and tsunami activity in Indonesia. Mount Kelud is the most active volcano in Indonesia with cycles that recur every 8 to 15 years. The community service method carried out is to collect data on the area, population, targets, capacity, vulnerability level, and empirical data on the 2014 eruption of Mount Kelud. Then conduct analysis, calculate estimates of health logistics needs, especially reproductive health, socialize the results of the analysis, and conduct disaster preparedness education. This activity was carried out for 6 weeks from March 12 to April 21, 2025. Based on the results of the risk assessment, the Ngancar District, Kediri Regency area has a score of frequent risk scale, severe impact scale, and priority and impact scale in the high category. To overcome the health crisis, a contingency plan is needed, especially for the reproductive health sub-cluster, which includes the preparedness of target data, existing capacity in the region, the level of vulnerability, and the estimated amount of health logistics needed to anticipate the eruption of Mount Kelud. Mount Kelud has a periodic eruption pattern in 8 to 15 years. The contingency plan for dealing with the health crisis of the eruption of Mount Kelud is very important for health service stakeholders because it can minimize the adverse impacts caused, increase rapid response, and ensure smooth coordination between related institutions in dealing with the natural disaster effectively and efficiently. It also supports disaster risk reduction efforts at the community level and strengthens the resilience of local communities.

Accelerated technological progress has profoundly altered our lifestyles. The younger generation, as future leaders of the nation, must acquire digital skills to keep pace with technological progress. Adolescents of school age require essential instruction on digital literacy, especially with personal data management and academic requirements. Effective data management will enhance lifestyle efficiency and efficacy. This community service initiative sought to impart database administration proficiency through the financial accounting cycle framework to students at SMK Raudlatul Husna in Central Lombok Regency, West Nusa Tenggara. Thirty-two students engaged in the seminar and simulation activities. The activity was conducted through lectures and class tutorials on data storage methodologies in digital technologies, including Google Drive, Wordpress Web and Instagram. At the conclusion of the session, participants were queried regarding the activity summary, and the majority responded accurately and effectively. This activity is anticipated to be sustained continuously, enabling high school students to acquire both theoretical and practical information applicable to their daily lives.

The rapid technological developments of this decade have had a positive impact on the transparency of information in financial reports. Transparent financial report information demonstrates the quality of the financial reports. Public accountants are tasked with providing an opinion on the fairness of the presented financial reports. The standard used by a public accountant in assessing the fairness of financial reports is the Public Accounting Auditing Standards (SPAP). The SPAP contains guidelines for carrying out the audit cycle systematically and in accordance with procedures, starting from the pre-engagement, planning, and reporting stages. Therefore, it is crucial to conduct audit report preparation training for prospective auditors, conducted by a team of lecturers from the Faculty of Economics and Business, Dian Nuswantoro University through a community service program. This community service activity took as participants prospective auditors from STIE Semarang students at KAP Sarastanto and Rekan in Semarang City. This activity was carried out so that prospective auditors could be provided with the knowledge and skills to complete the audit cycle from pre-engagement to reporting. The methods used in this community service program were presentations and mentoring, while the training material for preparing audit reports was carried out by the community service team and practitioners (auditors) from KAP Sarastanto and Rekan. The results of this training show that prospective auditors (STIE Semarang students) are able to understand the audit cycle systematically and are able to realize the importance of audit reports for stakeholders.

This service presents the results of activities carried out at PT PLN (Persero) Aceh Distribution Unit, focusing on designing a web-based automatic certificate generation system using the System Development Life Cycle (SDLC) method. The main goal of the development of this system is to improve efficiency and effectiveness in the process of creating certificates that were previously done manually. Through the needs analysis, it was found that the current manual system resulted in delays and errors in the management of certificate data. The SDLC method was chosen to ensure that system development is carried out in a structured manner, from needs analysis to system maintenance.

The documentary film “Pedal Waktu Jalanan Bandung” was a final project that explored a vintage bicycle community known as Paguyuban Sapedah Baheula Bandoeng (PSBB). The creation of this work is driven by a concern over the gradual disappearance of onthel bicycles amidst the wave of modernization in the city of Bandung. This project aimed to document the scriptwriting process of a documentary film by applying an expository narrative approach, in which the writer served as the scriptwriter. The film was developed through three main stages: pre- production, production, and post-production. During the pre-production phase, the writer conducted in-depth research and field observations, and developed a script framework, synopsis, treatment, and interview questions. The production phase involved filming, conducting interviews, and recording voice-over narration. Post- production included visual and audio editing as well as finalizing the distribution through the YouTube platform. The final result was a documentary that not only delivered historical information but also raised emotional awareness about the importance of preserving traditional values. In conclusion, the application of an expository narrative successfully strengthened the storytelling structure and provided a deeper understanding of the vintage bicycle community in Bandung.

Post-harvest handling of fish requires an effective cold chain system, including the availability of ice factories, to preserve the quality and freshness of catches. The presence of an ice factory enables fishermen to bring ice during fishing trips, ensuring the catch remains safe for consumption. The planning of a portable mini ice factory in Ciwaru Village, located within the Ciletuh National Geopark, aims to maintain fish quality along the southern coast of West Java. Although several ice factories exist in Sukabumi Regency, their availability at fish landing sites such as the Ciwaru Fish Auction Place (TPI) remains insufficient. According to the Regulation of the Minister of Marine Affairs and Fisheries No. 2 of 2021, assistance for ice factory construction is provided to fishermen groups following a feasibility study submission. This community service project aims to assist fishermen cooperatives in improving cold chain management and preparing a feasibility study for ice factory development. Key issues identified include limited human resource competence, hygiene and sanitation challenges, feasibility study preparation, and internal communication enhancement within cooperatives. Solutions are implemented through training programs, cold chain method applications, feasibility analysis for mini ice factories, and the development of an information system for fishermen. The planned ice factory unit has a capacity of 1 ton per 8-hour cycle, supported by three freshwater wells near the site. Economic analysis reveals an NPV of Rp1,170,676,141, an IRR of 10.91%, and a Net B/C Ratio of 1.64, with a BEP at 311 tons/year, well below the installed capacity of 788 tons/year, confirming its economic viability. The resulting feasibility study will serve as the basis for applying for government assistance, complemented by scientific publications, national media coverage, video documentation, and intellectual property registration.

Community development programs are very important in reducing poverty and enhancing societal prosperity by improving quality of life, fostering economic empowerment, and promoting inclusivity. However, not all the programs have success as expected. This study examines ten evaluation studies of community development programs across various areas and tries to find common weaknesses. A qualitative analysis of evaluation studies identifies shortcomings in three domains i.e. program design and management, stakeholder engagement and participation, and external resource constraints. It is argued that these shortcomings are largely predictable and highlight the need for proactive strategies. The paper suggests that embedding risk management into the conception and implementation of community development programs can mitigate these challenges. A simplified framework adapted from project management practices is proposed, encompassing risk identification, measurement, assessment, evaluation, and control. By systematically integrating risk management, community programs can anticipate obstacles, strengthen accountability, and enhance their likelihood of success. Recommendations include applying risk management throughout program cycles and conducting post-implementation evaluations to inform future initiatives.

Organic Waste Management and its utilization. The aim of organic waste management and the use of banana hump liquid organic fertilizer is to reduce agricultural waste and increase its benefits in the agricultural cycle for the community in Lembang Burasia. With this program, the community can find out how to make liquid organic fertilizer by utilizing waste and materials found around the community. These activities include (1) socializing the use of banana weevils to become POC; (2) Training on how to make POC from banana tubers; (3) making banana tubers into POC; (4) application of the use of banana weevils as POC. This activity can run well in accordance with the planning and objectives of the activity. The implementation of this activity received support from both the head of Lembang and local residents, which was indicated by their involvement in implementing the activity. The results of this activity have also provided special skills for local residents who have been directly involved in the process of making banana weevil POC.