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This study explores the strategic use of garbarata as an advertising medium at Minangkabau International Airport, Padang. The garbarata, which is a connecting bridge between the terminal and the aircraft, has great potential as an exclusive advertising space and has high exposure to passengers. However, this potential has not been optimally maximized. This study uses a qualitative approach with a case study method. Data collection was conducted through in-depth interviews with airport management, direct observation of the garbarata conditions, and analysis of documentation related to advertising policies and non-aeronautical asset management. The results of the study indicate that there are several main obstacles in the use of garbarata as a promotional medium. These obstacles include minimal promotional activities to potential advertisers, unclear pricing systems for advertising space rentals, lack of collaboration with advertising agencies, and limitations in the provision of design services and visual creativity. This has led to low interest of companies in utilizing this media as part of their marketing strategy. To overcome these problems, this study proposes several development strategies, including: increasing active and planned promotional activities, setting flexible and competitive rental prices, strategic collaboration with professional advertising agencies, and providing creative design services to support the effectiveness of advertising messages. This strategy is expected to attract more companies to advertise on the aerobridge, thereby increasing the airport's non-aeronautical revenue. With proper optimization, the aerobridge will not only serve as a functional passenger facility but can also transform into a strategic asset supporting the airport's sustainable commercial development and creating added value for both the operator and its business partners.

Motorcycle engine performance is highly dependent on the air intake system, which plays a crucial role in the combustion process. One common method for improving engine performance is modifying the intake system, either by installing additional devices or adjusting the quantity of incoming air. One innovation that is starting to be widely used is the Jet Ranger, an additional device on the intake duct that is claimed to be able to increase air flow into the combustion chamber. This study aims to determine the effect of the use of Jet Ranger and variations in the quantity of incoming air on the maximum power of a 150 cc motorcycle engine, as well as to analyze the interaction between the two variables. The study was conducted using an experimental method with a two-way factorial approach. The independent variables in this study consisted of two factors, namely the use of Jet Ranger (without Jet Ranger and with Jet Ranger) and variations in the quantity of incoming air divided into four levels (0.008; 0.012; 0.016; and 0.020 kg/s). Maximum power testing was conducted using a Leads dynotest, while the mass of incoming air was calculated based on air velocity measured using a digital anemometer. The test data were statistically analyzed using a two-way ANOVA to identify the effect of each factor and the interaction between them on engine power. The results of the study indicate that the use of Jet Ranger significantly increases engine power. Variations in the quantity of intake air also significantly affect the power generated. In addition, the interaction between the use of Jet Ranger and the quantity of intake air is proven to have a significant impact on increasing the maximum engine power. These results are in line with the theory of intake systems which states that increasing optimal air flow can increase the volumetric efficiency of the engine, and are supported by findings from previous studies. Therefore, these findings can be used as a reference in the development of air intake systems on motorcycles to achieve more optimal engine performance.

Rainwater is often considered to have a negative impact on the survival of fish fry, mainly due to its slightly acidic pH. However, this study aims to investigate the effect of rainwater on the survival rate of comet fish fry (Carassius auratus). The research was conducted at the Bossbaster experimental pond, Legok Nyenang Village, Kadudampit District, Sukabumi Regency, over a period of three days. The fish fry used were one day old after hatching, with a size of approximately 5 mm. The study utilized 15 containers with a water volume of 10 liters per gallon and 15 aeration devices to maintain water circulation. Five treatments were tested: A (100% rainwater), B (75% rainwater), C (50% rainwater), D (25% rainwater), and E (0% rainwater). The research design followed a Randomized Complete Block Design (RCBD) with three replications for each treatment. The data were analyzed using the Median Test and Regression Test to maximize the obtained results. The results showed that rainwater did not significantly affect the survival rate of comet fish fry. The survival rate of the fry in all treatments ranged from 98.33% to 99.17%. This indicates that although rainwater has a lower pH, it does not significantly affect the survival of comet fish fry. Based on these findings, it can be concluded that the rainwater taken from the research site did not negatively impact the survival rate of comet fish fry. The quality of the rainwater used in this study is safe and can be used as a medium for raising fish fry without causing a decrease in their survival rate. This study provides valuable information on the use of rainwater in fish farming, especially for comet fish fry.

Food and beverage companies play a vital role in the Indonesian economy, despite facing various challenges such as fluctuating raw material prices and intense market competition. Return on Assets (ROA) is used as an indicator to assess a company's profitability performance, which is crucial for determining the extent to which a company can generate profits from its assets. This study aims to analyze the effect of three financial variables, namely the current ratio (CR), debt to equity ratio (DER), and working capital turnover (WCT), on return on assets in food and beverage companies listed on the Indonesia Stock Exchange (IDX) during the 2020-2024 period. The approach used in this study is a quantitative approach with data analysis techniques that include classical assumption tests, multiple linear regression analysis, hypothesis testing, and coefficient of determination tests. The sample used in this study was 31 food and beverage companies selected using purposive sampling techniques based on certain criteria. The results of the study indicate that (1) debt to equity ratio and working capital turnover partially have a significant effect on return on assets, while the current ratio does not have a significant effect on return on assets. (2) Simultaneously, the current ratio, debt to equity ratio, and working capital turnover have a significant effect on return on assets in food and beverage companies listed on the IDX. The findings of this study state that the DER and WCT variables have a strong influence on ROA, which means that both are important factors in improving the profitability performance of companies in the food and beverage sector. Thus, the results of this study can provide insight for company managers and investors in making decisions related to financial management to maximize company profitability.

The use of office stationery (ATK) plays a crucial role in supporting the smooth running of administrative activities within government agencies, particularly within the Financial and Development Supervisory Agency (BPKP). As an agency responsible for supervising and evaluating state financial management, the availability of adequate and timely ATK is a crucial supporting factor in ensuring the efficient and effective operation of BPKP. Unavailability of ATK can hamper administrative processes, while excess stock can lead to budget waste and inefficiency in logistics management. This study aims to implement an inventory control system for ATK use at BPKP using the Min-Max Stock method. This method is used to determine the ideal minimum and maximum limits for ATK inventory, with the aim of minimizing overstock and stockouts. With this approach, agencies can manage ATK procurement more efficiently based on actual needs and existing usage patterns. The results of the study indicate that the application of the Min-Max Stock method provides significant results in inventory management. For the type of ATK in the form of F4 size HVS paper, the minimum and maximum values are set at 12 reams. Meanwhile, for A4-sized HVS paper, the minimum quantity is 72 reams and the maximum is 98 reams. For other types of stationery, such as printer ink, the minimum and maximum quantities are set at 74 and 92 bottles, respectively. For BPKP logo folders, the recommended minimum is 240 sheets and the maximum is 325 sheets. By implementing this method, BPKP can optimally manage stationery inventory, thereby minimizing the risk of stockouts that could disrupt operations and preventing inefficient stockpiling. This approach contributes to more orderly, transparent, and cost-effective logistics governance within the government.

According to Law Number 6 of 2023, which stipulates a maximum of 40 working hours per week, a survey conducted by the Kompas Daily Data Journalism Team reveals that the average working hours of lecturers in Indonesia reach 69.64 hours per week throughout 2024. This data highlights a significant discrepancy between the legal provisions and the reality of lecturers' workloads. Despite the law setting limits, many lecturers at Indonesian state universities are facing workloads that far exceed the stipulated working hours. These workloads consist of teaching responsibilities, research, community service, campus administration, and even side jobs, making it clear that the working conditions for lecturers are far from ideal. Moreover, the low salaries, especially for lecturers in private universities, have severe implications not only on individual welfare but also on the broader educational system. The low income of lecturers contributes to a looming teaching crisis on campus, which will inevitably affect the quality of education and lecturer performance. This crisis is further reflected in public sentiment. Google Trend data shows a sharp increase in searches for the phrase "don't be a lecturer," reaching a peak of 100 at the end of January 2025, indicating a growing disillusionment with the profession. In addition, a staggering 76.5% of lecturers have side jobs outside of their academic duties. The most common side jobs include consulting (32.4%), teaching (18.9%), research (16.2%), and writing (2.7%). A smaller percentage (5.41%) are engaged in informal work, such as being online motorcycle taxi drivers. These figures reveal the heavy burden on lecturers to seek additional income, which ultimately compromises their focus and performance in their primary academic roles.

In addition to the positive findings regarding the effectiveness of instructional videos in enhancing reading skills, this study also highlights the importance of integrating technology into early childhood education. The use of instructional videos provides an engaging and interactive learning experience for children, making the learning process more enjoyable and effective. Children at TK Irama Jaya were able to visualize and connect sounds with letters and words, which is a crucial aspect of developing reading skills at an early age. Furthermore, the study reveals that instructional videos cater to different learning styles, allowing children to absorb information through auditory and visual channels. This multisensory approach enhances retention and understanding, especially for young learners who are just beginning to master reading. The videos also offer repetition and consistency, allowing children to revisit lessons at their own pace, thus reinforcing their learning process. The improvement observed in the post-test scores suggests that instructional videos can serve as a valuable tool in early childhood education, complementing traditional teaching methods. However, the study also indicates that while instructional videos are beneficial, they should be used in conjunction with other pedagogical techniques, such as interactive reading activities and teacher-guided lessons, to maximize learning outcomes. It is recommended that other schools, particularly those in remote or underserved areas, consider incorporating instructional videos into their teaching practices. The accessibility and cost-effectiveness of these videos make them an ideal resource for improving the quality of education in early childhood settings. Further research could explore the long-term effects of instructional videos on reading fluency and other areas of early literacy development.

The use of office stationery (ATK) plays an important role in supporting the smooth operation and administrative activities of government agencies, particularly the Financial and Development Supervisory Agency (BPKP). As an institution whose primary function is to supervise and evaluate state financial management, BPKP requires adequate logistical support to ensure optimal implementation of its duties. One form of such support is the availability of sufficient, timely, and appropriate ATK. Common problems often encountered in ATK management are overstock, which is excess inventory that leads to wasted budget and storage space, and stockout, which is a shortage of inventory that can hinder work activities. This study aims to control ATK inventory by applying the Min-Max Stock method. This method helps in determining the minimum and maximum inventory limits for each type of ATK, so that procurement of goods can be carried out in a planned and efficient manner. With this approach, agencies can maintain a balance between availability of goods and efficient use of the budget. The results of the study indicate that the application of the Min-Max Stock method in the BPKP environment produces more rational inventory figures. For the type of HVS paper F4 size ATK, the minimum and maximum values are set at 12 reams. Meanwhile, for A4-sized HVS paper, the minimum and maximum values are 72 reams and 98 reams, respectively. For printer ink, the ideal minimum and maximum quantities are 74 and 92 bottles. Meanwhile, BPKP logo folders have a minimum value of 240 sheets and a maximum of 325 sheets. The implementation of this method has a positive impact on the efficiency of the procurement and control process of stationery at BPKP.

This study aims to comprehensively examine the role of BAZNAS (National Amil Zakat Agency) of West Bandung Regency in the distribution of productive zakat as a means to foster community-based business development during the first semester of 2025. Productive zakat, unlike consumptive assistance, is positioned as a strategic instrument to improve the economic independence of mustahik (zakat recipients), particularly micro-entrepreneurs such as small shop owners, farmer groups, tailors, and individuals engaged in similar economic activities. The research adopts a descriptive qualitative approach to capture an in-depth understanding of program implementation. Data collection methods include in-depth interviews with BAZNAS officials, serving as key informants, and the examination of relevant documents, reports, and activity records. The findings indicate that the application process for assistance is conducted through formal, verified requests, ensuring transparency and accountability, rather than accepting open-form submissions. The form and amount of assistance are adjusted to the specific type and needs of each business, and recipients are prioritized based on the eight asnaf categories, with a focus on those who already have ongoing business activities. In addition to capital provision, the program aims to empower mustahik to transition into muzakki (zakat givers) over time, thereby creating a sustainable cycle of economic empowerment. Monitoring activities are conducted three times a year to assess progress and identify challenges. However, the study also highlights constraints, including limited mentoring sessions and the need for more consistent supervision to ensure that the assistance translates into long-term economic impact. To maximize effectiveness, stronger collaboration among BAZNAS, local communities, and regional government is recommended, alongside capacity-building initiatives for beneficiaries. This collaborative approach is expected to reinforce the sustainability and impact of productive zakat programs, contributing to broader poverty reduction and community empowerment goals.

Competition in Indonesia’s business world today compels companies to strategize in order to outperform their rivals. Only those companies that are truly strong, implement competitive strategies correctly, and carry out intensive promotions will succeed. One promotional tool that is expected to directly establish, improve, dominate, or maintain mutually beneficial exchange relationships with customers is personal selling, particularly aimed at encouraging consumers to purchase the offered products.A company’s goal is to obtain maximum profit from its business operations. To achieve this, managerial expertise and capability are required to combine the functions within the company effectively. Personal selling is carried out by the company to introduce its products, influence and inform consumers, so they are encouraged to buy—ultimately increasing sales volume.This study seeks to examine whether personal selling has a significant impact on increasing sales volume at PT. Intermas Tata Trading, Surabaya branch. A qualitative approach is used, supported by both qualitative and quantitative data from the company. Data collection techniques include editing, tabulating, and interviews. Data processing involves simple correlation analysis, simple regression analysis, and t-tests. Hypothesis testing is conducted using statistical analysis with SPSS 16.0.The study results confirm that the hypothesis is true: the personal selling variable (X) has a significant influence on the sales volume (Y) at PT. Intermas Tata Trading, Surabaya. This is evidenced by the t-value (4.005) > t-table (2.228) at a significance level of 0.002. The simple correlation coefficient is 0.785 or 78.5%, indicating a very strong and positive relationship between the independent variable (personal selling) and the dependent variable (sales volume).

This study examines a comprehensive approach to addressing common issues in laundry services, such as ineffective scheduling, skills gaps, and operational inefficiencies. The research focuses on RPK Omah Laundry Prapen, aiming to improve work processes and optimize human resources in this laundry business. The proposed solutions include the implementation of an attendance system, financial application training, laundry and ironing skills training, and a single-shift work system. The attendance system is designed to improve workforce punctuality, while the financial application training aims to enhance employees' understanding of financial management. Additionally, providing specific training on laundry and ironing techniques helps to bridge the skills gap and ensure high-quality service. The introduction of a single-shift work system aims to increase efficiency by streamlining operations and reducing staff fatigue. The results of the study indicate that these proposed solutions lead to several positive outcomes. The attendance system contributes to better time management, fostering a sense of responsibility among employees. Financial application training helps staff manage the business's finances more effectively, leading to more informed decision-making. Furthermore, the skills training program has shown improvements in the quality of laundry and ironing services, which directly impacts customer satisfaction and retention. The adoption of a single-shift work system reduces operational costs and increases the overall efficiency of the laundry services. Ultimately, this approach enhances fairness, operational efficiency, and productivity, creating a more conducive work environment. Implementing these integrated solutions can help laundries, such as RPK Omah Laundry Prapen, achieve better, sustainable performance by addressing key operational challenges and maximizing their workforce's potential. This study provides valuable insights for other laundries looking to optimize their operations and improve long-term business success.

Urban logistics is a significant source of carbon emissions in Indonesia, and effective decarbonization strategies are required. EVs offer a promising solution, but their impact requires quantitative evaluation within the local context. This study analyzes the effect of adopting an electric van fleet on total well-to-wheel carbon emissions within an urban distribution network in Indonesia. This study employs a comparative case study method. A baseline scenario consisting of 25 diesel vans is compared to an intervention scenario where electric vans replace the entire fleet. The emission analysis was conducted using the WtW framework, utilizing specific emission factors for diesel fuel from the IPCC (2006) and the Java-Madura-Bali (JAMALI) grid emission factor from IESR (2023) to ensure contextual relevance. The transition to an electric fleet successfully reduces the total well-to-wheel carbon footprint by 13.63%. This reduction is equivalent to an absolute CO2 emission decrease of nearly 3 tons of CO₂ per month. Nevertheless, indirect emissions from electricity generation still contribute a significant carbon footprint, indicating that the national energy mix is highly dependent on the environmental benefits of EVs. This study concludes that fleet electrification is a viable and effective decarbonization strategy for Indonesia’s logistics sector, even with the current state of the electricity grid. However, fleet decarbonization efforts must run in parallel with policies for a national transition toward renewable energy to maximize the emission reduction potential of electric mobility. Future research should include the total cost of ownership (TCO) and life cycle assessment (LCA) for a more holistic evaluation.

Employee shift scheduling in the hospitality industry remains a critical yet complex task due to fluctuating operational demands, fairness requirements, and labour regulations. Many hotels still rely on manual scheduling methods, which are time-consuming and prone to biases, particularly in ensuring fair workload distribution across employees. Despite numerous studies on workforce scheduling, limited attention has been given to integer linear programming (ILP) models that address gender-based restrictions and operational fairness simultaneously in real-world hotel contexts, especially in developing regions such as Central Java. This study proposes an Integer Linear Programming (ILP) model to generate optimal shift schedules for hotel staff over a 31-day planning horizon. The model incorporates operational constraints, including one shift per day, gender-based restrictions (which prevent female staff from working night shifts), availability, minimum staffing levels, and fairness in workload distribution. Key parameters and binary decision variables were defined to ensure compliance with the hotel's specific requirements. Empirical data were collected from a hotel in Central Java involving 20 employees, and the model was implemented using Python with a Gurobi solver. The ILP model successfully generated optimal schedules in under 10 seconds, significantly outperforming the manual method, which required over 4 hours. While the manual schedule resulted in an imbalance where some employees worked over 27 days and others only 22, the ILP approach enforced a strict maximum of 26 working days for all staff. Furthermore, the fairness index (FI) improved from 19.2% in the manual method to 0% in the ILP-generated schedule, indicating complete equity in workload allocation. The proposed ILP model demonstrates its effectiveness in improving scheduling fairness, operational efficiency, and compliance with labour policies. This work not only addresses a critical research gap in hospitality scheduling practices in Indonesia but also offers a replicable framework for other labour-intensive service sectors. Future research may explore multi-objective extensions incorporating employee preferences, satisfaction, and dynamic demand fluctuations.

Blockchain logistics represents the integration of blockchain technology into the logistics sector, aiming to enhance efficiency, transparency, and security across supply chain processes. From an Islamic economics perspective, digital transformation must align with core values such as justice, transparency, and honesty to support the development of fair and sustainable logistics systems. The decentralized nature of blockchain offers promising solutions for building supply chains rooted in Islamic ethical principles. This study conducts a bibliometric analysis to examine the development and research trends of blockchain logistics within the context of Islamic economics. Using VOSviewer software, relevant scientific publications were analyzed based on bibliographic data sourced from reputable academic databases. Bibliometric parameters—such as the maximum number of authors per document and the minimum number of documents per author—were applied to identify key contributors and dominant research themes. The bibliometric mapping reveals the growth trajectory of blockchain logistics research framed by Islamic values. The visualization highlights research clusters, prominent authors, co-authorship networks, and publication trends that illustrate the evolution and scholarly interest in this interdisciplinary area. Emerging themes suggest a convergence between blockchain-driven logistics innovation and ethical economic practices advocated in Islamic teachings. The findings provide a comprehensive overview of the current landscape and collaboration opportunities in blockchain logistics research through an Islamic lens. This study contributes to the strategic positioning of future research by identifying gaps, potential synergies, and critical areas for development. Ultimately, it offers a foundational reference for scholars seeking to explore the integration of Islamic ethical principles within the advancement of blockchain-enabled logistics systems.

This study aims to analyze the strategy of utilizing vacant spaces within airports to enhance non-aeronautical revenue through collaboration with Micro, Small, and Medium Enterprises (MSMEs). Given the growing importance of non-aeronautical revenue sources in the aviation industry, this research focuses on how airports can optimize underutilized spaces for commercial purposes. The research method applied is library research, where relevant literature, journals, and previous studies are reviewed to gain insights into successful strategies and best practices. The findings of the study indicate that the development of commercial spaces, such as fast-food tenants, retail outlets, and photo booths, can significantly enhance the passenger experience by providing convenient services and entertainment. Additionally, these developments offer a sustainable alternative revenue stream for airports, diversifying income beyond traditional aeronautical activities. The research also explores the role of the Value Proposition Canvas business model to assess the alignment between the value offered by these services and the needs of passengers. By applying this model, the study emphasizes the importance of understanding customer expectations and ensuring that airport services meet these demands. The analysis further highlights that successful implementation of these strategies requires careful planning, including collaboration between airport management, MSMEs, local governments, and sponsors. Building strong partnerships and ensuring mutual benefit are critical for maximizing the non-aeronautical revenue potential. The study concludes by suggesting that airports can leverage vacant spaces more effectively to not only boost revenue but also improve the overall passenger experience, contributing to the long-term sustainability and growth of the airport sector.

This study aims to improve the learning outcomes of underhand passing skills through the application of play-based methods to fifth and sixth grade students at SDN 1 Bumijawa. This study used a quantitative approach with a One Group Pretest and Posttest experimental design. The sample in this study was 15 students. Data were collected through underhand passing skills tests conducted before and after treatment. The results showed a significant increase in underhand passing skills after students participated in learning using the play-based method. This method has been proven to be able to increase students' interest, active participation, and understanding of basic volleyball techniques. In addition, the application of the play-based method also creates a more enjoyable learning atmosphere and reduces student boredom. This method directly involves students in practical activities, so that students not only understand the theory but also can apply it in real games. Play activities carried out in small groups allow students to learn from each other and increase self-confidence. Improvement in underhand passing skills also shows that the play-based method is effective in developing fine motor skills needed in volleyball. Therefore, the play-based method can be used as an alternative strategy in learning Physical Education, especially volleyball material in elementary schools. This study suggests that Physical Education teachers implement play-based methods more widely to maximize student learning and learning outcomes, as well as increase their motivation and enthusiasm for sports. Furthermore, implementing play-based methods can also improve teamwork among students, a crucial aspect of volleyball. With a more fun and interactive approach, students are more motivated to practice and master the skills taught.

Welding is one of the most essential metal joining processes in manufacturing, construction, and industrial applications, where Shielded Metal Arc Welding (SMAW) remains widely used due to its flexibility, cost-effectiveness, and ability to be applied in various welding positions. This study aims to analyze the effect of welding position variations on the mechanical properties of SS400 steel, particularly in terms of tensile strength, bending strength, and microstructural characteristics. The experimental method was conducted using 6 mm thick SS400 steel with E6013 electrodes of 2.6 mm diameter in three welding positions: 1G, 2G, and 3G. The welded specimens were then tested through tensile testing (ASTM E8) and bending testing (ASTM E190-14), followed by microstructural analysis in the weld metal area. The results revealed that welding position significantly affects the mechanical properties of welded joints, where the 3G position produced the highest tensile strength of 188.48 kgf/mm², while the 2G position produced the lowest tensile strength of 113.70 kgf/mm². Conversely, the bending test showed that the 2G position provided the maximum bending strength of 1394 kgf/mm², followed by 3G and 1G positions. Microstructural observations demonstrated variations in the distribution of ferrite, pearlite, martensite, and cementite phases across different welding positions, with the dominance of ferrite and pearlite in the 3G specimen contributing to higher tensile strength, while the dominance of martensite and cementite in the 2G specimen enhanced hardness and bending resistance. Overall, this study confirms that welding position plays a crucial role in determining the quality of SS400 welded joints, and the findings are expected to serve as practical guidance for industry in selecting appropriate welding positions for construction needs, while encouraging further research with additional variables such as electrode type, welding current, and post-weld heat treatment to achieve a more comprehensive understanding.

Mbak Siti Bagus's Warung Seribu Berkah UMKM is located in the Karang Jahe Beach tourist area, Punjulharjo Village, Rembang District, Rembang Regency, Central Java. Within 10 years of running the business, the UMKM experienced obstacles in developing the business, namely branding that was not optimal, which was indicated by: 1) Not having a business identity; 2) the location of the UMKM was difficult to identify with other UMKM; and 3) the business did not have an online marketing channel. From these obstacles, the Business Work Lecture (KKU) Team provided assistance with a program to maximize branding by: 1) Creating a logo design for cup packaging; 2) Creating a logo on the packaging; 2) Creating proof of payment receipts, 3) Creating Google Maps aimed directly at the UMKM stall, and 4) Creating social media accounts in the form of TikTok and Instagram. The KKU implementation method includes: 1) Pre-survey to the MSME Location, 2) Identifying problems in the MSME Warung Seribu Berkah Mbak Siti Bagus, 3) Program preparation, 4) Program implementation, 4) Mentoring, 5) Evaluation. The program results obtained are as follows: 1) MSMEs have a unique logo for cup packaging, 2) MSMEs already have a note to add up orders, 3) MSMEs already have Google Maps which are directly centralized in the MSME stall, and 4) MSMEs have social media accounts to facilitate marketing

The topic of Differentiated Instruction (DI) has recently been studied by researchers and practitioners due to its importance and potential to improve student learning. In this regard, the current study aims to provide a concise overview of DI in the context of EFL to illustrate the need for its implementation in the classroom to foster successful language learning. Since differentiated instruction is designed to place students at the centre of the teaching and learning process, promote equity and academic success, as well as recognize diversity among students, it enables teachers to address a student’s unique needs, interests, abilities, English proficiency, and preferred learning strategies. While challenges such as increased workload and implementation pressure in DI may arise, the potential benefits of this approach to students' learning processes, attitudes toward learning, and long-term success are notable. Therefore, the learning process is maximized when teachers are committed to differentiated instruction. SMA ISLAM PLUS ADZKIA (SIPA) is one of the most popular spotlight of school in Medan which the school was succeed in graduating their Alumni to Kedinasan and private university both inside and outside the country with scholarship. This school becomes the spot or role model for many other schools in Medan, therefore, the researcher intended to investigate further about the teaching model applied in this school, especially in EFL classroom in studying English. Some problems need to be answered after applying this study, such as how the English teachers manage the class to apply the DI, how is the students’ understanding about the subject after they applied DI

This study explores the effectiveness of role play as a teaching method to enhance students' speaking skills in professional secretarial contexts, specifically in business telephone conversations, presentations, and negotiations. The research was conducted within the Diploma III Secretarial Program over one academic semester. Employing a qualitative methodology, the study involved classroom observations and student reflections gathered through feedback sessions. The objective was to assess how role play could contribute to the development of fluency, confidence, and contextual language use in English for specific professional purposes. The findings revealed that role play significantly improved students' speaking performance. Students showed greater confidence in expressing ideas, improved fluency, and a better understanding of appropriate vocabulary and expressions suited to professional environments. Furthermore, students expressed that the interactive and practical nature of role play made learning more enjoyable and less intimidating, allowing them to immerse themselves in real-life communication scenarios. These positive experiences encouraged active participation and increased motivation to learn English for professional use. The study also highlighted the value of reflective learning, as students were able to identify their own progress and areas for improvement. Through continuous engagement in simulated professional tasks, learners developed better adaptability in communication and exhibited more natural conversational flow during tasks that mirrored real workplace situations. In conclusion, the role play method proves to be a highly effective pedagogical tool for enhancing speaking skills in secretarial English. It not only helps build linguistic competence but also cultivates soft skills necessary for professional communication. Therefore, it is recommended that educators incorporate role play regularly in English for Specific Purposes (ESP) curricula to maximize its benefits in developing productive speaking abilities among students.