USN Scientific Journal Publisher (Universitas Sembilanbelas November Kolaka - USN-SJ)
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RESIDENTIAL FLOOR TILING AS A MATHEMATICAL MODELING CONTEXT FOR GEOMETRY LEARNING IN JUNIOR HIGH SCHOOL
No full textMathematical modeling is a learning approach that emphasizes the connection between mathematical concepts and real-life situations. However, geometry instruction in junior high schools is still frequently presented in an abstract manner and lacks meaningful real-world contexts. This study aims to examine residential floor tiling as a mathematical modeling context for geometry learning at the junior high school level. The research was conducted using a subsidized house type 36 located in the Citra Latambaga Housing Complex, Latambaga District, Kolaka Regency, focusing on floor tiling activities involving various tile sizes and materials. A qualitative research design with a mathematical modeling approach was employed, encompassing problem identification, mathematical model formulation, model solution, and interpretation of results. The findings indicate that residential floor tiling involves multiple geometry concepts aligned with the junior high school curriculum, including area measurement, ratios, unit conversion, estimation, and mathematical decision-making. Variations in tile sizes and materials generate multiple mathematical solutions, encouraging students to engage in critical thinking, compare alternative strategies, and interpret mathematical results within a real-life context. These results demonstrate that floor tiling provides meaningful learning experiences and supports the development of students’ mathematical modeling competencies. This study contributes theoretically to the body of research on mathematical modeling by introducing a familiar real-world context and offers practical implications for teachers in designing contextual and applicable geometry instruction at the junior high school level
Spatial Analysis of Physico-Chemical Parameters of Water and Soil in the Kuala Langsa Mangrove Ecosystem, Aceh
No full textMangrove ecosystems play a vital role in maintaining coastal ecological balance through their biological, hydrological, and economic functions. However, increasing anthropogenic activities such as aquaculture, settlement expansion, and infrastructure development have led to environmental degradation in the mangrove areas of Kuala Langsa, Aceh. This study aims to analyze the physicochemical characteristics of water and soil in three mangrove zones—ecotourism, residential, and airport areas—by measuring parameters such as temperature, oxidation-reduction potential (Eh), water and soil pH, salinity, and moisture content. Field sampling was conducted in situ in February 2024 using a purposive sampling method, while data analysis was performed descriptively and quantitatively. The results show that Station 1 (Mangrove Ecotourism Area) exhibited the best environmental conditions, with an average temperature of 30 °C, Eh of 141.67 mV, water pH of 7.14, soil pH of 6.34, salinity of 33‰, and soil moisture of 67.6%. Station 2 (Residential Area) experienced higher anthropogenic pressure, indicated by higher temperature (33.33 °C), negative Eh (-159.33 mV), and lower salinity (2‰). Meanwhile, Station 3 (Airport Area) showed stable environmental conditions with a positive Eh (115.33 mV), neutral pH, salinity of 2.5‰, and moisture of 32.33%. Overall, the Kuala Langsa mangrove ecosystem still demonstrates a good degree of ecological resilience, although some areas have experienced degradation due to human activities. This study highlights the importance of ecosystem-based adaptive management through domestic waste control, tourism activity regulation, and mangrove vegetation conservation as ecological buffer zones to sustain the environmental functions of coastal ecosystems
ROUTINES CONFLICT COMMOGNITIVE IN STUDENTS' WORK RESULTS ON THE MATERIAL OF INDEFINITE FORM LIMITS
Full text linkThis research aims to describe cognitive conflicts that occur in first year students when solving indefinite form limit problems. This research is qualitative research with the researcher as the main instrument. Research method with stages of preparation, data collection, transcript and analysis. A total of 8 students from private universities were given mathematics problem sheets, containing limit questions of indefinite form consisting of one number and worked on for 30 minutes. Two students were selected as research subjects based on indicators of conflict in the components of routines and were interviewed in a semi-structured and in-depth manner to explore further information about the causes of conflict. The results of the research showed that the research subjects were able to solve the questions given but there were errors that triggered conflict, both ritualized and exploratory. . Ritualized due to weak understanding of material previously received in high school. Exploratory, which is a new or different method because it is not well understood, can cause cognitive conflict. Good mastery and understanding of the material can reduce the occurrence of cognitive conflicts in students' minds
IMPROVING STUDENTS’ PRONOUNCIATION MASTERY BY USING ENGLISH PRONUNCIATION CHART AT THE SECOND GRADE OF SMPN 1 WUNDUL AKO
No full textThis study was conducted with the aim of improving students' Pronounciation mastery in terms of English Pronunciation of Second Grade Students of SMPN 1 Wundulako. The research question in this study is “How can the Pronunciation Chart application improve students' pronunciation English?”.The subject of this research was class VIII B SMPN 1 Wundulako of preliminary research, planning, implementing, observing and reflecting.The 25 students were actively involved in teaching activities by using Pronunciation chart application The design of this research is a classroom action research conducted with several stages, namely preliminary research, planning, action, observation, analysis, and reflection in each cycle. The purpose of this study was to improve students' pronounciation. The researcher used two types of instruments to collect data, included a Pronunciation test given at the fourth meeting of each cycle, and an observation sheet filled in during the teaching and learning process. This study yielded good results in terms of improving students' English pronunciation, as well as students' performance in class. The researcher conducted two cycles in this study. The first cycle was considered a failure as only 60% of subject were able to achieve the minimum score (75). While in the second cycle, the percentage of success increased to 80%. Therefore, the study was terminated as it was deemed successful. In the initial process, students' attitudes improved over time, which was reflected in the results of the observation sheet. This improvement could be proven through the results of the student observation sheet. In the first cycle, their average score was 29, which was in the good category, and increased to 36 in the last meeting of the second cycle
ANALYSIS OF STUDENTS’ NUMERICAL LITERACY BASED ON MATHEMATICAL ANXIETY IN SOLVING TWO-VARIABLE LINEAR EQUATION SYSTEM AT JUNIOR HIGH SCHOOL
No full textThis study aims to obtain a description of students' numeracy literacy based on their mathematical anxiety in solving Two-Variable Linear Equation System problems. This study was conducted at Bala Keselamatan Palu Junior High School. The study employed a qualitative approach involving three eighth-grade students selected based on levels of mathematical anxiety (high, moderate, and low). The research subjects were selected based on the results of a mathematical anxiety questionnaire, taking into account the recommendations of the mathematics teacher. Data were collected through written Two-Variable Linear Equation System problem-solving tests and semi-structured interviews and analyzed using Miles and Huberman’s qualitative data analysis model. The results indicate that students with low and moderate mathematical anxiety were able to meet all numeracy literacy indicators, although procedural weaknesses were observed in students with moderate anxiety. In contrast, students with high mathematical anxiety were only able to meet one numeracy literacy indicator
The Role of Farmers' Groups in Increasing Rice Farming Production
No full textThis study aims to determine the role of farmer groups in the implementation of rice farming activities in Tinigi Village and the relationship between the role of farmer groups in increasing rice farming production in Tinigi Village, Galang District, Tolitoli Regency. The analysis method used is a descriptive analysis method using a Likert Scale and Multiple Linear Regression to determine the influence of learning classes, cooperation facilities and production units. The results of the study show that (1) the role of farmer groups in rice farming is categorized as high, both as a learning class, cooperation facilities and production units (2) The results of the Determination Coefficient Test (R) of multiple linear regression analysis that R is 0.532 or 53.2% means that the percentage of contributions affects learning classes, cooperation facilities and production units. The results of the F Test show that the independent variables simultaneously have a significant effect on the dependent variable. The results of the T Test show that learning classes (X1), cooperation facilities (X2) production units (X3) affect the role of farmer groups, proven by using the T Test
EXPLORING ETHNOMATEMATICS IN TRADITIONAL GETUKAND KUE LAPIS FOODS FROM JAVA AS A SOURCE OF MATHEMATICAL LEARNING
Full text linkMathematics is often regarded as an abstract and formal discipline, which can create a disconnect between students’ understanding and real-worldapplications. Ethnomathematics offers a culturally responsive approach by uncovering mathematical practices embedded in local traditions, thereby making mathematics learning more contextual and meaningful. This study aims to explore the ethnomathematical elements found in traditional Javanese foods getuk and kue lapis and analyze their potential as culturally grounded resources for mathematics instruction. Employing a qualitative approach with ethnographic methods, the research was conducted in a Javanese community in North Sumatra, involving traditional food makers as key informants. Data were collected through direct observation, semi-structured interviews, and documentation. The analysis revealed the presence of mathematical concepts such as geometric shapes, proportional reasoning, repeated patterns, and symmetry in food preparation and presentation. These findings suggest that traditional food-making processes can serve as contextual media for teaching geometry and proportional concepts at the primary and secondary school levels. Integrating such ethnomathematical elements into instructional materials not only enhances conceptual understanding but also fosters cultural awareness and appreciation. Therefore, this study highlights the relevance of local cultural practices as an innovative foundation for the development ofculturally contextualized mathematics education
The Role of Education Profession Courses in Building Student Character Values as Prospective Biology Teachers
Full text linkEducation is the key to progress and quality development because humans can realize their full potential with education. One of the courses that discusses theory is the education profession course, which examines the concept of professional teachers. This study aims to determine the role of education profession courses in improving the character values of students as prospective biology teachers. This study uses a qualitative descriptive method. Data was collected by distributing research questionnaires containing statements about the study's title. The research sample included biology education students in 2020, 2021, 2022, and 2023 intakes, with 45 students as respondents. This study concludes that education profession courses are essential in improving students' character values. In addition, lecturers in charge of the course are also very important in guiding and being an example for students as prospective biology teachers.Keywords: character values, students, teachers, biolog
Improving Learning Outcomes through Problem-Based Learning with PQ4R Method
Full text linkThe purpose of this research is to improve mathematics learning outcomes on line and angle material. This research including Quasi Experiments using True Experimental Design with Posttest-Only Control design. The subject of this research is a class VII student of MTs Swasta Tontonunu in the year 2017 which consists of the 2 classes each as class experiment and class control. The instrument used is a test instrument, sheet observation activity students, and sheets observation teacher activity in learning. Data analysis used the difference of two mean, namely the t-test of two independent samples was good assumption variance same or no, but previously tested the normal distribution using Kolmogorof Sminov. The results of the descriptive analysis showed that the mean posttest class experiment 78.76 19 higher than the mean posttest class control 73, 375. The results of the two- way difference test on mean show a significance value (2 tailed) 0.005 (0.05) which means that the mean of the two posttests is significantly different. Based on the results of the study, it was concluded that the application of the learning model based on problem with PQ4R method can improve learning outcomes math on the subject discussion of lines and angles. This is possible because of learning based on problem started with introduce real everyday problems will more meaningful and moreeasy recognized by students. And through PQ4R, material on the subject discussion of lines and angles more many about fact will moreeasy understood in accordance steps preview, question, read, reflect, recite, and review
Effect of Resource Factors and Quality of Instruction on Performance in Mathematics of Nigeria Secondary School Students
Full text linkIt seems that Nigeria's educational system has been undergoing improvement only on quantitative when it comes to the number of enrolments in students and schools. However, little effort has been put in place in terms of capacity (physical and material resources, human and financial resources) to manage high enrollment. Resources capacity in secondary schools was nothing to write home about. Most of these resources in secondary school were dilapidated. To worsen the scenario, the scarce resources allocated to these schools are grossly inadequate compared to students' enrollment and come late to the end-users in the public secondary schools. The various stakeholders in the education sector express stern concern about the consistently poor performance of students in secondary schools, especially in mathematics. Since secondary school education is expected to be free by the government, coupled with population increase, it is reasonable for people to take advantage of the free education program. Although the government and private sector of education keep providing qualified teaching staff and non-teaching staff, students in secondary schools still face poor performance in mathematics. The effect of all these on the academic performance in Nigeria's mathematics secondary school students concerns researchers of this empirical work. It is based on these issues and many more that this work sought to empirically investigate the impact of resource factors and quality of instruction on the performance of Nigeria secondary school students in mathematics