Online Journals Universitas Kristen Indonesia
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Optimizing Teacher Assistance In Mathematics Learning Through Scaffolding Thresholds
Full text linkA problem in learning mathematics in the classroom is that there are no clear guidelines on when teacher assistance needs to be given, maintained, or stopped. This lack of clarity risks causing disproportionate assistance, either in the form of over-scaffolding which creates learner dependence, or under-scaffolding which inhibits concept understanding. This study aims to identify and examine in depth the threshold for providing scaffolding by teachers in mathematics learning, based on the Zone of Proximal Development (ZPD) theory. The approach used was descriptive qualitative with the subject of six students in class XI at SMK Ahmad Yani Jabung who were selected based on the category of high, medium and low academic ability. Data were obtained through observation of learning activities, in- depth interviews, and document analysis of students\u27 work, and analyzed through the stages of data reduction, presentation, and verification using the Miles and Huberman model. The results showed that the threshold of scaffolding is contextual and dynamic, determined by three main indicators: learners\u27 cognitive responses, the level of dependence on assistance, and verbal and nonverbal expressions. The process of providing assistance includes three stages, namely initial assessment, implementation of scaffolding, and gradual reduction of assistance. The conclusion of this study emphasizes the importance of adjusting teacher interventions according to learners\u27 ZPD position, as well as the need for teacher training and the development of ZPD-based adaptive learning models to improve learning effectiveness and encourage learning independence
Promoting Active and Effective Learning through the Student Teams-Achievement Divisions Model
Full text linkThis research was motivated by the low achievement of the fourth-grade IPAS learning process and outcomes at SDN 128/II Pasir Putih. Initial observations conducted by the researcher, which revealed that only 38.46% of 26 students achieved a score that met the achievement criteria. The objective of this research is to improve the IPAS learning process and outcomes using the Student Teams Achievement Division model. The research consisted of two cycles. Each cycle consisted of two meetings, each consisting of four stages: planning, implementation, observation, and reflection. Data was collected through observation, tests, and documentation. Teacher observation results in cycle I has an average percentage of 85.42% and in cycle II has an average percentage of 91.67%, categorized as Very Good. The improvement in the learning process of students, in cycle I reached 76.92% in the category of quite good, and in cycle II increased to 92.31% in the category of very good. The increase in student learning outcomes in cycle I reached 65.38% in the category of sufficient, and cycle II reached 88.46% in the category of very good. 65.38 % is in the sufficient category, and cycle II reached 88.46% in the very good category. Based on the results it was found that the implementation of the STAD model can help students improve their learning comprehension skills
Development of a PBL Based E-Module for Reaction Rate Material with Integration of Batak Toba Local Wisdom Dekke Naniura
Full text linkThe integration of local wisdom into science education can create a meaningful connection between traditional knowledge and scientific concepts, making learning more contextual, engaging, and relevant for students. However, the teaching materials commonly used in schools are still conventional and do not actively involve students in the learning process. This study aims to develop and evaluate the feasibility of a chemistry learning module based on problem based learning integrated with Batak Toba local wisdom, particularly through the cultural context of Dekke Naniura cuisine. The research employed a Research and Development (R&D) approach, referring to the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), which in this study was carried out up to the development stage. The data analysis techniques used included both qualitative and quantitative approaches. The module was validated by three chemistry lecturers and three chemistry teachers, referring to the BSNP feasibility standards. The validation results showed that the average feasibility percentage from the lecturers was 94.2%, while from the teachers it was 94%, both of which are categorized as feasible. Therefore, the developed learning module meets the feasibility standards and is recommended for implementation in chemistry education at schools
Development of a Guided Inquiry-Based Chemistry Laboratory Manual with Learning Videos for Grade X Senior High School
Full text linkChemistry learning in senior high schools level often encounters challenges due to the abstract nature and broad scope of the material, which make it difficult for students to understand and lead to low learning outcomes One solution is laboratory practice, which provides direct learning experiences.An observation at Methodist El Shadday Senior High School showed that no chemistry laboratory manual was available, and the textbooks used did not include practical activities. This research was conducted to design a chemistry laboratory manual based on the guided inquiry model. The guided inquiry model was selected as it guides students to ask questions, develop hypotheses, conduct experiments, and draw conclusions. The manual also introduces laboratory tools, materials, and safety guidelines to ensure safe laboratory activities. The research applied a Research and Development (R&D) approach using the ADDIE model up to the development stage. The product was validated by three chemistry lecturers and three chemistry teachers using instruments based on BSNP standards. Validation by lecturers showed scores of 88.46% for content, 82.5% for presentation, 87.03% for language, 88.88% for graphics, and 89.39% for guided inquiry. Teacher validation showed 96.66% for content, 96.66% for presentation, 96.29% for language, 96.82% for graphics, and 95.54% for guided inquiry. All results were categorized as feasible. The results show that the laboratory manual developed is suitable to be used as a learning resource. It is anticipated that this product will help improve students’ academic performance as well as their scientific process skills through hands-on laboratory activities
Application of the Analytical Hierarchy Process (AHP) Method in Supporting Decision-Making Regarding Drug Abuse Factors
Full text linkDrugs are an abbreviation for narcotics and dangerous drugs, whether natural, synthetic, or semi-synthetic. The use and spread of illegal drugs worldwide shows a sharp increase, spreading and affecting all countries and people of all religions, and has caused many fatalities. The purpose of this study is to apply the Analytic Hierarchy Process (AHP) method in evaluating risk factors and analyzing the performance of each criterion against drug abuse areas. This data primarily comes from the Bengkulu Province National Narcotics Agency. The consistency test results for each criterion and alternative in the AHP method show consistent values of less than 0.1, indicating that the data used meet the consistency standards required by Saaty for the AHP method. The results of the analysis of preferences for risk factors show that family factors have the highest weight, meaning the role of family is very important, followed by peer group factors, personality, community environment, economic and psychosocial factors, drug availability, anxiety and depression, and school environment.
Keywords: AHP, drug abuse, MCDM, risk factors, Bengkulu Province 
Ethnomathematics Exploration of the Architecture of the At-Taqwa Grand Mosque in Southeast Aceh
Full text linkAt-Taqwa Grand Mosque in Southeast Acch not only functions as a place of worship, but also as a symbol of the cultural identity of the local community and a religious tourist destination for visitors to the city of Cane. This study aims to explore the application of ethnomathematics in the architectural design of mosques that combine local cultural elements with Eastern European design influences in accordance with Islamic principles. The research method used is qualitative with an ethnomathematics and descriptive design approach. The focus of the study is on the relationship between geometric aspects, such as symmetry and rotation in mosque architecture, and the cultural values of the community. The results of the study show that the application of mathematical principles in mosque design not only enriches the community\u27s understanding of the relationship between geometry and culture but also supports cultural preservation and strengthens local identity amid globalization. These findings are expected to contribute to the development of ethnomathematics studies in Indonesia and its application in education and cultur
PENGARUH GAYA KEPEMIMPINAN TRANSFORMASIONAL DAN DISIPLIN KERJA TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIOR (OCB) DI DINAS PERHUBUNGAN PROVINSI RIAU: The Influence of Transformational Leadership Style and Work Discipline on Organizational Citizenship Behavior (OCB) in the Riau Province Transportation Service
Full text linkThis research is quantitative research which aims to determine the influence of transformational leadership style and work discipline on OCB in the Riau Province Transportation Service. The sample in this research was permanent employees of the agency and there were 30 employees. Questionnaires are used as a data collection technique. The data analysis method used is the multiple regression analysis method. The research results at the significant level for the transformational leadership style variable (X1) are 0.000 < 0.05, meaning it is significant, so the transformational leadership style variable has a positive and significant effect on OCB in the Riau Province Transportation Service. The results of the research on the work discipline variable (X2) with a significant level of 0.012 <0.05, meaning that it is significant, means that work discipline has a positive and significant effect on OCB in the Riau Province Transportation Service. The results of the simultaneous test show a significant value of 0.000 < 0.005, so transformational leadership style and work discipline simultaneously have a positive and significant effect on OCB. The adjusted R2 Determination Coefficient value of 80.9% means that OCB is influenced by transformational leadership style and work discipline, while the remaining 19.1% is the influence of other variables not examined in this research. The results of this study show that to improve OCB in agencies, agencies must pay attention to leadership styles and improve work discipline so that employees will voluntarily carry out extra role activities at the Riau Province Transportation Service.
Keywords: Transformational Leadership Style, Work Discipline, OC
ANALISIS UMUR PAKAI GARNITURE TAPE SQP 90 PADA MESIN HAUNI KDF 4
Full text linkABSTRAK
Efisiensi proses produksi sangat bergantung pada keandalan komponen mesin. Pada mesin Hauni KDF 4, garniture tape SQP 90 adalah komponen vital yang kegagalannya dapat menyebabkan downtime dan inefisiensi biaya. Praktik penggantian yang tidak didasarkan pada data dapat menimbulkan pemborosan akibat penggantian terlalu dini (over-maintenance) atau kerugian produksi akibat penggantian terlambat (under-maintenance). Penelitian ini menganalisis umur pakai fungsional garniture tape menggunakan data kegagalan periode September-Desember 2022 untuk menentukan jadwal penggantian yang optimal. Dengan menerapkan analisis distribusi Weibull menggunakan metode Maximum Likelihood Estimation (MLE), Weibull Probability Plot, dan Method of Moments (MoM), penelitian ini mengidentifikasi karakteristik keandalan komponen. Hasil analisis menunjukkan pola kegagalan komponen berada dalam fase keausan (wear-out) dengan shape parameter (β) = 4,65. Nilai Mean Time To Failure (MTTF) terestimasi sebesar 7.144.345 batang filter, namun nilai ini tidak direkomendasikan sebagai interval penggantian karena memiliki risiko kegagalan hampir 48%. Sebagai gantinya, penelitian ini merekomendasikan interval penggantian preventif pada umur pakai 4,8 ± 0,5 juta (CI 4,3 – 5,4 juta) batang filter. Interval ini didasarkan pada target reliabilitas 90%, yang menyeimbangkan antara efisiensi dan risiko operasional. Penerapan interval ini berpotensi memberikan efisiensi biaya pembelian komponen sekitar 66,7% dibandingkan praktik historis, sekaligus meningkatkan prediktabilitas dan keandalan produksi
Kata Kunci: Garniture Tape, Weibull Distribution, MTTF (Mean Time To Failure), Keandalan (Reliability), Mesin Hauni KDF 4, Efisiensi Produksi, Analisis Umur Pakai
Broken Home Family Relationship And Juvenile Delinquency On The Learning Interest Of Grade VIII Students Of SMP Negeri 2 Sibolangit
Full text linkThis research was conducted at SMP Negeri 2 Sibolangit, Class VIII which aims to determine the magnitude of the Relationship between Broken Home Family and Juvenile Delinquency and PAK Learning Interest of Class VIII Students of SMP Negeri 2 Sibolangit. The research method used by the author is the ex post facto method, with a quantitative description system. The population of this study was 70 students of class VIII of SMP Negeri 2 Sibolangit in the , and to determine the number of research samples, Ridwan\u27s opinion was used, which states that "if the population size is ≤ 100, the sample size is at least 50% of the population size". So the sample is 50% of the population, namely 50% X 70 = 35 students of class VIII of SMP Negeri 2 Sibolangit. There is a significant and meaningful relationship between broken home families (X1) with student learning interest (Y) and juvenile delinquency variables (X2) are controlled, amounting to r1.2 = 0.810 with t test = 8.017 obtained t table value (8.017 > 1.107). While at the zero level Ry.1 = 65.61%. This means that if students\u27 perceptions of Broken Home Families (X1) can be controlled, the better the students\u27 interest in learning PAK (Y). Therefore, efforts are needed to enlarge the relationshipbetween X1 and Y. Therefore, parents must maintain the peace of family life, so that this greatly influences students\u27 interest in learning PAK. (2) There is a significant relationship between juvenile delinquency (X2) with interest in learning PAK (Y) and Broken Home Families (X1) are controlled, amounting to r1.2 = 0.560 with t test = 3.914 obtained t table value (3.914 > 1.107). While at the zero level Ry.2 = 31.36%. This means that if juvenile delinquency can be controlled, the better the students\u27 interest in learning (Y). (3) The two variables X1 and X2 have a significant relationship with the price of r12 = 0.47 and it is known that the rtable price at a significance level of 5% with 35 respondents obtained rtable = 0.334. Thus the price of rh > rt = 0.47 > 0.334 so that the correlation coefficient of X1 to X2 is related
THE CONTRIBUTION OF OVERTOURISM TO TOURIST MISBEHAVIOUR: THE SHIFTING OF QUANTITY- BASED TO QUALITY-BASED TOURISM
Full text linkThis article examines overtourism in Bali that affect to tourist misbehaviour as the shifting from quantity-based to quality-based tourism. Build the linkage between the nature of tourism (definition, coverage, and practical level) and the tourist behaviour (intentional and motivation), that led to the reflection in decide suitable form of tourism for the island of Bali. The study utilizes a qualitative descriptive approach and relies on secondary sources, including academic articles, books, and news coverage relevant to the topic. The finding shows that the overtourism create Bali as an international destination for all market segmentation. The nature of tourism will give comprehensive analysis to justify people mobility with such pattern with own characteristic. It will determine the behaviour of the tourist from the cross-cultural aspect. The study put highlight on the huge inflow of tourist in relate with the habitual of tourist in everyday life in destination, then how to build common understanding between local residents, tourism stakeholders, and visitors to minimize social clashes and disruption in the society.Keywords: Overtourism, Nature Tourism, Tourist Misbehaviour, Cross-Cultura