USN Scientific Journal Publisher (Universitas Sembilanbelas November Kolaka - USN-SJ)
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Analysis of Student Errors in Solving Trigonometry Problems
Full text linkThis study aims to obtain a picture of student errors in working tests on Trigonometry. This research was conducted with a qualitative approach and was descriptive. The subjects studied were Mathematics Education students in the third semester of Class A of the University of Sembilanbelas November Kolaka in the Academic Year 2019/2020. This study uses an instrument in the form of a Final Examination in Trigonometry courses. Based on the research results obtained, an illustration that students' mistakes in working on problems in the Trigonometry course are caused by students not understanding the questions, the lack of accuracy in basic mathematical operations, and mastery of the concepts of trigonometry that students have
COLLECTIVE ARGUMENTATION AND PARTICIPATION IN SOLVING GEOMETRY PROBLEMS IN THE MATHEMATICS CLASSROOM
Full text linkCollective argumentation is a process in learning that can be used to train communication skills, collaboration, and understanding of mathematical concepts. In this process, both teachers and students play an active role, which is called participation. This study aims to describe the structure of collective argumentation and student participation in solving geometry problems in the classroom. This research method is a qualitative case study. The subjects in this study were a mathematics teacher with 11 years of teaching experience at the junior high school level and six 9th-grade students who had an interest in mathematics from two different classes. The structure of collective argumentation shows that this learning focuses on students while the teacher acts as a facilitator. It can be seen from the more significant number of actions taken by students than teachers. In terms of participation, teachers more often act as ghostee, while students participate more as spokesman. Overall, this study reveals the structure of argumentation in solving geometry problems at each stage of Polya. Questions and explanations given by the teacher influence students' collective argumentation. A teacher must have questioning and communication skills so that students can actively participate in learning in the classroom
The Effect of Archaebacteria and Eubacteria Web-Based Learning Media on Students’ Cognitive Learning Outcomes in Balikpapan
Full text linkCognitive learning outcomes are an aspect related to the reasoning or thinking process, namely the ability and activity of the brain to develop rational abilities. Based on observation of schools in Balikpapan, students’ cognitive learning outcomes still have not achieved the minimum completion criteria (KKM). Students have difficulties in learning archaebacteria and eubacteria because the concepts are abstract. The lack of variations in learning media has made this topic more difficult to teach. This research aimed to determine the influence of Archaebacteria and Eubacteria web-based learning media on students’ cognitive learning outcomes in Balikpapan. The type of research was quasi-experimental with a pretest-posttest control group design. The study population was all senior high schools in Balikpapan. The sampling technique used purposive sampling. The samples of this research were three senior high schools in Balikpapan. The subjects of this research were students of SMAN 1 Balikpapan, SMAN 2 Balikpapan, and SMA Patra Dharma Balikpapan. Data analysis technique using ANCOVA (SPSS Statistics 23). According to the research findings, the average cognitive learning score of the cognitive learning score test in the experimental class is higher than the control class, which is 72.98 67.84. The prerequisite test shows that data were normally distributed and class groups derived from a homogenous population. The hypothesis test using ANCOVA at a 0.05 significance level shows that there is an effect of applying web-based learning media on students’ cognitive learning outcomes in learning archaebacteria and eubacteria
ANALYSIS OF JUNIOR HIGH SCHOOL STUDENTS' MATHEMATICAL PROBLEM-SOLVING SKILLS IN HOTS TASKS BASED ON TOLAKI MEKONGGA LOCAL WISDOM
No full textMathematical problem-solving is a crucial competence that enables students to think critically and creatively in facing real-life challenges. However, mathematics learning often lacks meaningful connections to students’ cultural contexts. This study integrates local wisdom from the Tolaki Mekongga community as a culturally relevant approach to strengthen students’ understanding of mathematical concepts. The study aims to describe and analyze junior high school students’ mathematical problem-solving abilities through ethnomathematics-based problems derived from Tolaki Mekongga traditions. This research employed a descriptive qualitative design involving 32 eighth-grade students from SMP Negeri 2 Kolaka. Data were collected through problem-solving tests and interviews, then analyzed according to Polya’s four stages: understanding, planning, implementing, and reviewing the solution. The findings revealed that most students demonstrated moderate to high levels of problem-solving ability. High-ability students could relate mathematical concepts to local cultural contexts, while low-ability students struggled to interpret contextual information and apply appropriate strategies. The study concludes that incorporating problems based on local wisdom enhances students’ engagement and conceptual understanding. Integrating cultural contexts such as Tolaki Mekongga traditions can serve as an effective ethnomathematical approach for improving mathematical problem-solving skills and fostering culturally responsive mathematics learning
DEVELOPING EARLY CHILDHOOD COGNITIVE ABILITIES THROUGH NUMBER CARDS IN ADMAJARIA KINDERGARTEN
No full textThis study aims to describe and analyze the improvement of cognitive abilities of group B children, especially in the aspect of recognizing symbols and number concepts, through the implementation of Number Card media in Admajaria Kindergarten, Bojonegoro Regency. The main problem of this study is the low initial cognitive achievement, which is indicated by the pre-cycle completion percentage of 35.71% with an average value of 65.00. This study uses the Classroom Action Research (CAR) design model of Kemmis and McTaggart which was implemented in two cycles, with 14 Group B children (8 boys and 6 girls) as subjects. Data were collected through observation, tests, and documentation. The criteria for success of the action was set at 75% classical learning completion. The results of the study showed a significant and sustainable increase: in Cycle I, the completion percentage reached 64.28%; then in Cycle II, the completion percentage increased sharply to 85.71% with an average value of 80.00. These results have exceeded the set targets, proving that the use of Number Card media combined with active play strategies is effective and feasible for improving cognitive abilities, especially number recognition, in early childhood.
ANALYSIS OF SCALOGRAM AND CENTRALITY IN LABUHAN BATU REGENCY: IMPLICATIONS FOR SERVICE FACILITY DISTRIBUTION
No full textSpatial analysis is important for understanding how service facilities are distributed in a region and identifying key locations within that area. This study examines the layout of service facilities and trends in centrality in Labuhan Batu Regency, employing the Scalogram Method in conjunction with Centrality Analysis. The Scalogram Method evaluates the variations and access levels of service facilities to classify sub-districts according to their hierarchical positions, while Centrality Analysis determines important areas that greatly influence spatial dynamics and the delivery of services. The findings show significant variations in the ranking of services and regional importance, with Rantau Utara recognized as the primary service center, attaining the top scores in both the scalogram and centrality evaluations. In addition, Bilah Hulu and Rantau Selatan demonstrate significant spatial impact, enhancing their functions as secondary service hubs. In comparison, areas such as Panai Hilir, Panai Hulu, and Pangkatan are rated lower in terms of service order and importance, highlighting the need for enhanced infrastructure and improved distribution of services. The classification of centrality into four distinct categories creates an organized method for comprehending spatial impact, highlighting the distinctions between primary service centers and less central areas. These results emphasize the importance of fair regional development, indicating the need for specific policies to increase access to services, strengthen connections between regions, and promote balanced infrastructure development. By combining findings from the Scalogram and Centrality Analysis, this study provides valuable viewpoints for regional planning, presenting essential suggestions to improve service distribution and promote spatial equality in Labuhan Batu Regenc
Analysis of Student Satisfaction with the Content and Teaching Methods of Agroindustrial and Environmental Entrepreneurship
Full text linkThis study aims to analyse student satisfaction with the content and teaching methods of the Agroindustrial and Environmental-Based Entrepreneurship course, which is crucial in shaping students' entrepreneurial mindset and skills in the context of sustainable development. The increasing demand for environmentally conscious entrepreneurs in the agroindustry sector highlights the significance of this course. The research uses a descriptive quantitative approach with a survey design involving 46 respondents. The results show that, in general, students are satisfied with the content, with an average score of 3.68, falling into the high category (3.41 - 4.20). Specific areas of satisfaction include content relevance to needs (3.85), content supporting entrepreneurial interest (3.78), content ease of understanding (3.62), and content applicability and contextuality (3.48). Satisfaction with teaching methods also indicates a high level (mean = 3.69), with interactive teaching (3.87), interesting case studies (3.73), discussions aiding understanding (3.65), and practical applications (3.50). External factors also show relatively high satisfaction (mean = 3.64), including classroom facilities (3.82), teaching aids quality (3.71), learning environment comfort (3.60), and availability of learning resources (3.41). The findings reveal that students from the Counselling and Guidance Study Program at the University of Jambi have high satisfaction with the course content and teaching methods. Despite high satisfaction, there are areas for improvement, such as enhancing the applicability of content and increasing the intensity of practical experience. External factors, such as classroom comfort and learning resources, should also be improved. To enhance learning quality, integrating more practical experiences and complex case studies, alongside digital technology and more applicable teaching materials, will enrich the learning experience. Further research in other programs and with a deeper approach will provide more comprehensive insights
Wonders of the Invisible World: Pseudomonas syringae, the Ice Maker
Full text linkThis literature review explores the multifaceted role of Pseudomonas syringae, a bacterium renowned for its ice-nucleating properties. Pseudomonas syringae significantly influences atmospheric processes, agriculture, and various ecosystems. These bacteria, equipped with ice nucleation proteins (INPs), facilitate ice formation at temperatures warmer than the typical freezing point, impacting weather patterns by initiating snow and hail formation. While its ice-nucleating activity can lead to frost damage in agriculture, it is also harnessed for artificial snow production. This review synthesizes findings on the bacterium's characteristics, morphology, physiology, and ecology, drawing from diverse studies. It highlights its widespread presence in various environments, including plant surfaces, water bodies, and atmospheric samples, emphasizing its adaptability and ecological significance. By employing content analysis on secondary data sources, this study provides a comprehensive understanding of Pseudomonas syringae's unique ability to mediate ice formation and its broader implications for environmental balance and biotechnological applications.Keywords: INA bacteria, Pseudomonas syringae, ice formation, InaZ protein
Application of SQ3R Learning Method in Improving Mathematics Learning Outcomes in Quadrangular Basic Competencies Class VIIB students of MTs Almawaddah Warahmaah Kolaka
Full text linkThe purpose of this study was to find out that the application of the SQ3R learning method can improve mathematics learning outcomes in the quadrilateral basic competencies of class VIIB students at MTs Almawaddah Warahmah Kolaka. This research includes classroom action research (CAR) or classroom action research. The procedure of this research is planning, action implementation, observation and evaluation, and reflection. The sources of data in this study were mathematics teachers and students. The type of data obtained is quantitative data, namely student learning outcomes and qualitative data, namely observation sheets. This research was conducted in class VIIB of MTs Almawaddah Warahmah Kolaka in the 2010/2011 academic year even semester. with the number of students 12. From the results of data analysis concluded: (1). The activity of the teacher (researcher) experienced a significant increase from cycle I to cycle II where the learning process was in accordance with what was contained in the lesson plans and observation sheets, (2). Student activities showed a significant increase where they became more active during the learning process and dared to show off their work/reports in front of the class, (3) The application of the SQ3R learning method could improve student learning outcomes for class VIIB MTs Almawaddah Warahmah Kolaka, where the average results learning during the first cycle of 43.33 or completeness of 41.66% increased in the second cycle of 67.5 or completeness of 83.33%
Profile of Problem Solving System of Linear Equations Two Variables of MTs Al-Khairat Tomini Students Based on Student Learning Styles
No full textThis research aims to obtain a description of the problem-solving profile of two-variable linear equation systems of MTs Al-Khairat Tomini students based on the student's learning styles. This type of research is qualitative. The subjects of this research were three students in class VIII B MTs Al-Khairat tomini, each consisting of one student with visual, auditory, and kinesthetic learning styles. Data on student problem-solving was obtained from written tests and interviews. This research shows that the subject (IN) carries out the problem-solving plan by the solution plan questions, and the subject did not recheck the problem-solving because he did not understand how to do it. The subject (MA) carries out the problem-solving plan by the problem-solving plan, and the subject can check and solve questions by checking the written answers again