Journal of Education and Learning Mathematics Research (JELMaR)

Analyzing Students' Understanding of the Concepts of Congruence and Resemblance through the Design of Folklore HLTs

2025-11-05T01:45:47+00:00

This study aims to analyze students' understanding of the concept of congruence and congruence through the design of Hypothetical Learning Trajectory (HLT) based on folklore. The research subjects were students of grade VIII at Ahlul Irfan Junior High School. Data were collected through observation, interviews, comprehension tests, and documentation during the learning process. Data analysis was conducted using data reduction, data presentation, and conclusion drawing techniques. The results showed that students with high ability were able to meet all indicators of understanding, such as restating concepts, categorizing objects, giving examples and non- examples, using various mathematical representations, choosing the right procedures, and applying concepts in problem solving. In contrast, students with low ability were only able to fulfill two indicators, namely restating concepts and categorizing objects based on certain characteristics, while they were not able to use representations, procedures, and logical reasoning in problem solving. This study reinforces the importance of using local cultural contexts in mathematics learning to address misconceptions and increase student engagement. Teachers are recommended to use folklore-based HLT as a contextual and interesting learning media, with special attention to assisting low ability students.

Identification of Dyscalculia Characteristics Based on Mathematics Examination Results in Students with Physical Disabilities

2025-11-05T02:10:13+00:00

Abstract: This study aims to identify and describe the characteristics of dyscalculia in seventh-grade students with physical disabilities at SLB-BCD YPAC Jember. Students with physical disabilities often face dual challenges, namely physical limitations and potential specific learning difficulties such as dyscalculia. Using a descriptive qualitative approach, this study analyzed data from mathematics exam results, in-depth interviews with accompanying teachers, and classroom observations. The subjects were two students with physical disabilities who showed indications of learning difficulties in mathematics. The results showed clear manifestations of dyscalculia characteristics in both subjects. The main findings include: (1) difficulties in comparing and ordering numbers (numerical aspect); (2) weaknesses in visual-spatial perception for recognizing geometric shapes (geometric aspect); (3) procedural errors in basic arithmetic operations such as subtraction involving the concepts of place value and borrowing; and (4) difficulties in applying mathematical concepts to practical word problems. The conclusion of this study confirms that students with physical disabilities can exhibit complex dyscalculia profiles, which require individually tailored assessment strategies and learning interventions.

Development Instrument Evaluation Mathematics HOTS -Based for Prospective Junior High School Teachers

2025-11-05T02:28:58+00:00

Higher-order thinking skills (HOTS) are essential for meeting the challenges of the 21st century. Therefore, these skills must be possessed by every individual engaged in the learning process. Students, as learners, need frequent practice to develop these skills. To facilitate this, prospective teachers should be capable of designing assessment instruments that foster higher-order thinking. However, in practice, teachers often struggle to create such instruments effectively, as it is a complex task. This study was initiated to address that challenge. It employed a research and development (R&D) approach using the 4D model: define, design, develop, and disseminate. The research subjects were 15 prospective mathematics teachers who developed HOTS-based test items, which were then tested on 79 seventh-grade students at Darul Akhwan International Junior High School. The developed items were evaluated for their validity and practicality through construct and empirical validity tests. The practicality was further assessed using reliability tests, item difficulty levels, and discrimination indices. The results showed that the instrument achieved 100% validity based on expert judgment. The reliability test yielded an rcount=0.659r_{count} = 0.659rcount=0.659, which exceeds the rtable=0.2213r_{table} = 0.2213rtable=0.2213; thus, the instrument is considered reliable. The discrimination index analysis revealed that 60% of the items were in the “fair” category, while the remaining 40% were categorized as “good.” Meanwhile, the difficulty level analysis showed that 15% of the items were “very difficult,” 65% were “difficult,” and 20% were “easy.” These results indicate that the instrument has an appropriate level of difficulty. In conclusion, the assessment instrument developed in this study is both valid and practical for evaluating students’ higher-order thinking skills.

Ethnomathematical Exploration of The Admission Schedule For The Five Timely Prayers

2025-11-05T02:43:32+00:00

An introduction to the practice of the five daily prayers in islam has become an integral part of the lives of muslims worldwide. The adhan, the call to prayer, is recited five times daily, marking the designated, times for worship. However, beyond its spiritual aspect, the adhan schedule also reflects a fascinating mathematical system, influencing and reflecting the relationship between time, geometry,and the daily lives of muslims. An ethnomathematical exploration of the adhan schedule for the five daily prayers from an ethnomathematics in the learning process can enrich teaching materials by connecting these aspects to students’ cultures. The method used in this study is a qualitative approach with an ethnographic approach, where data is collected through observation, interviews, and documentation

Ethnomathematics in Buying And Selling Transactions of Cracker Traders at Puger Market

2025-11-05T02:56:41+00:00

This study examines the application of ethnomathematics in the buying and selling transactions of cracker traders at Puger Market, Jember Regency. Ethnomathematics is a study that integrates mathematical elements with community culture. The purpose of this study is to identify how mathematical practices, particularly arithmetic operations such as addition, subtraction, multiplication, and division, are applied contextually by traders in their daily economic activities. This study uses ethnography with a descriptive approach, collecting data through observation, interviews, and documentation. The results show that traders are able to calculate prices and change manually quickly and accurately, even without formal mathematics education. This suggests that the practice of counting in trading activities reflects the real application of mathematical concepts in everyday life and can be used as a source of contextual learning in schools.

Problem-Solving Ability Through the Fast Feedback Method with a Student Answer Grouping Model

2025-11-05T04:44:09+00:00

A common problem in mathematics learning is teachers' delays in providing feedback to students, thus slowing down the process of conceptual understanding. The Fast Feedback method allows teachers to respond quickly to students' answers during learning activities. This study aims to improve students' mathematical problem-solving skills through the Fast Feedback method with an answer grouping model. This study used a Classroom Action Research (CAR) approach implemented in three cycles with the stages of planning, implementation, observation, and reflection. The subjects were 42 students of SMP Harmoni School Terpadu Teluk Bintuni Regency, studying the Pythagoras Theorem. Data was collected through task cards, observation sheets, and documentation. The results showed an increase in students' problem-solving skills in each cycle. The number of students answering correctly increased from 31 students in cycle I to 38 students in cycle II, and 39 students in cycle III. Thus, the application of the Fast Feedback method with an answer grouping model has been proven to improve students' mathematical problem-solving skills. The Fast Feedback method using the answer grouping model is expected to be used in in-depth mathematics learning and have an impact on efforts to improve student learning outcomes

Development of Doratoon Video Learning Media Based on Local Wisdom for Students' Understanding of Fraction Concepts in Grade IV

2025-11-05T03:57:38+00:00

This study aims to develop local wisdom-based video doratoon learning media for understanding the concept of fractions of grade IV students and determine the validity, practicality, and effectiveness of the learning media developed. The type of method used in this research is development (Research and Development) using the 4D development procedure model which consists of 4 stages namely Define (definition), Design (plaħning). Development (development), Dissemination (dissemination). This research uses instruments, namely validation sheets in the form of questionnaires or questionnaires given to validators of material experts, media experts, teacher responses, student responses, and tests of understanding of local wisdom-based fraction concepts given to students. The subjects in this study were media expert validators, material experts, teachers, and grade IV students totaling 20 people. Based on the trials conducted, the results of the validity of the learning media development were 97.22% with very valid criteria, and the validity of the learning material was 95% with very valid criteria. The results of the practicality level were 83% student response, and 92% teacher response with very practical criteria. For the level of effectiveness obtained by 89% very effective criteria, and on the n gain score of 74% with high criteria. So it can be concluded that the doratoon video learning media based on local wisdom for understanding the concept of fractions of fourth grade students.

Exploring Ethnomathematics In Saint Joseph Catholic Church, Jember

2025-11-27T01:57:52+00:00

Mathematics is often perceived as an abstract science detached from daily life, whereas in reality, it grows and develops within the culture of society. The ethnomathematics approach seeks to reveal how mathematical concept, especially geometry, manifest within cultural practices and architectural works. This study aims to explore the application of geometric concepts in the architecture of Saint Joseph Catholic Church Jember as an integration of mathematics, culture, and spirituality. The research employed a qualitative approach with an ethnographic case study design through participatory observation, interviews, and visual documentation. The result show that various elements of the church building, such as the bell tower, triangular roof, arched windows, pillars, stained glass, and floor mosaics, contain geometric concepts such as plane figures, solid figures, symmetry, similarity, and geometric transformations including reflection, rotation, and translation. Each architectural element demonstrates not only mathematical order but also symbolic meanings such as balance, perfection, and eternity that reflect Catholic faith values. The findings affirm that ethnomathematics serves as a bridge between science, art, and cultural values, making mathematics learning more contextual, meaningful, and grounded in real life.

Leveraging Local Culinary Heritage as a Context for Learning Mathematics

2025-12-01T03:48:26+00:00

This study investigates how a diverse set of traditional Malang foods—including Mendol Tempe, Bakwan Malang, Tempe Chips, Cwie Mie, Rawon, Bakso Bakar, Putri Salju cookies, and Orem-Orem—can function as culturally grounded contexts for developing students’ mathematical reasoning and model-construction competencies. Each food item reveals distinct mathematical structures: density and texture patterns in Mendol Tempe, irregular yet classifiable shapes in Bakwan Malang, fractal-like crisp patterns in Tempe Chips, proportional seasoning in Cwie Mie, time-based flavor development in Rawon, rotational symmetry in Bakso Bakar, geometric uniformity in Putri Salju, and combinatorial layering in Orem-Orem. Drawing on a philosophical perspective that positions mathematics as an interpretive lens for understanding real-world phenomena, students transition from sensory observation to formal modeling, constructing representations such as ratio models, time–intensity functions, geometric similarity models, rotational interval equations, and combinatorial structures. Findings indicate that embedding mathematical tasks in local culinary culture enhances conceptual understanding, promotes creative model construction, and strengthens culturally responsive pedagogical practices. This approach highlights the natural emergence of mathematical ideas from daily life experiences, making learning more meaningful, engaging, and contextually relevant.