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Edumatsains
Published by Universitas Kristen Indonesia
ISSN : 25277642     EISSN : 25277235     DOI : -
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics
Jurnal EduMatSains merupakan wadah untuk menampung dan mempublikasikan hasil karya baik berupa hasil penelitian maupun kajian teori yang original dalam ruang lingkup pendidikan matematika dan pendidikan sains (fisika, kimia, biologi) serta ilmu matematika dan ilmu sains (fisika, kimia, biologi) bagi semua civitas academika khususnya dosen, guru, peneliti dan mahasiswa. Jurnal EduMatSains terbit sebanyak dua kali dalam satu tahun (Juli dan Januari). Jurnal EduMatSains diterbitkan Oleh Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia.
Arjuna Subject : -
Articles 387 Documents
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Ethnomathematics: A Study of Plane Geometry Concepts at the Walahar Dam Putri Nur'aini, Jihan; Noor Aini, Indrie; Rosita Dewi Nur, Iyan
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.7883

Abstract

This study aims to explore ethnomathematical aspects in the Walahar Dam, particularly in identifying plane geometry concepts embedded in its architectural structures. This research employed a descriptive qualitative method. Data were collected through field observations, interviews with dam managers, and documentation. The results show that various plane geometry concepts are found in the Walahar Dam, including triangles, rectangles, trapezoids, circles, semicircles, tessellations, and composite shapes. These geometric forms are not only functional in structural design but also reflect cultural and aesthetic values influenced by Dutch colonial and Chinese architecture. The findings indicate that the Walahar Dam has significant potential as a contextual learning resource in mathematics, especially in teaching plane geometry concepts based on local culture. This study contributes to enriching ethnomathematics literature and supports the integration of cultural heritage into mathematics learning.
Development And Validation of the “Flipped Periodic Table”: Website-Based Chemistry Learning Media for Electron Configuration Material Irfandita Khoirul Rosyidi; Sri Rahayu; Al Miza Jolietah Nizar Putri; Erza Fradeva Priyanto; Helena Qanita
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.7885

Abstract

This study is intended to develop and examine the validity of a chemistry learning medium based on the Flipped Periodic Table website for grade 10 senior high school students on electron configuration material. The developed medium takes the form of an interactive digital periodic table with card-based features, electron configuration input, voice feedback, and a leaderboard to enhance student engagement and learning motivation. This study adopted a Research and Development (R&D) approach based on the ADDIE model, encompassing five phases: analysis, design, development, implementation, and evaluation. Media validity was evaluated by material experts and media expert using validation instruments covering aspects of conceptual accuracy, learning relevance, language clarity, visual quality, accessibility, and interactivity. The validation findings showed that the learning media fell into the highly valid category, with scores of 93.00% from material experts and 96.00% from the media expert, yielding an overall validity of 94.50%. Student response analysis conducted in classes X-5 and X-9 showed positive responses, with a total percentage of 89.40%, classified as highly valid.  Qualitative findings revealed that students perceived the learning process as more interesting and challenging and were supported in understanding electron configuration through independent practice. These results indicate that the Flipped Periodic Table is suitable for use as an alternative instructional medium to enhance students’ understanding and motivation in learning electron configuration.
Analysis of Students Mathematical Argumentation Abilities in Solving System of Linear Equation in Two Variables Problems Based on The Level of Creative Thinking Isti Hari Wahyuni; Wiwin Sri Hidayati; Lia Budi Tristanti
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.7924

Abstract

The research is important to conduct because students’ mathematical argumentation skills are still often underdeveloped, especially when they are required to justify solutions and connect them with their level of creative thinking. Strengthening these skills is essential not only for obtaining correct answers but also for fostering logical reasoning, critical thinking, and deeper conceptual understanding in mathematics learning. The mathematical argumentation ability of junior high school students in solving SPLDV problems based on the level of creative thinking is defined as the ability of students to convey reasons (data, claims, warrants, backing, and qualifiers) to support or refute a claim derived from a solution to an SPLDV problem. The purpose of this study was to describe students’ mathematical argumentation abilities across four categories of creative thinking: very creative, creative, quite creative, and less creative in solving SPLDV problems. This study employed a qualitative descriptive approach. Data validity was ensured through time triangulation. Data analysis was conducted through data reduction, data presentation, and drawing conclusions. The results showed that students with quite creative and less creative levels were able to write data and claims and also convey them verbally, while students with very creative and creative levels tended to convey data and claims verbally. Students with very creative thinking generated warrants based on ticket prices, whereas those with creative, quite creative, and less creative thinking generated warrants based on the grouping of travel participants. All students were able to convey backing, conclusions, and qualifiers verbally.
Analysis of Category Theory as a General Framework for Algebraic and Applied Structures Nuraisah, Siti; Harahap, Amin; Harahap, Nurlina
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.7998

Abstract

Category theory is one of the important frameworks in modern mathematics because it is able to unify various algebraic concepts and structures. In addition, this theory has been widely applied in many other fields. This article aims to provide a comprehensive discussion of the role of category theory as a universal language that not only explains relationships among mathematical objects, but also serves as a methodological foundation for computer science, logic, and data science. This study employs a qualitative approach through a literature review by examining key concepts such as objects, morphisms, functors, adjunctions, and monads, as well as their roles in bridging abstract theory and practical applications. The results of the literature review indicate that category theory is capable of simplifying the complexity of algebraic structures through a higher level of abstraction. Through this approach, different branches of mathematics that were previously fragmented can be interconnected. Furthermore, category theory has been widely used in functional programming, the development of logic-based systems, and data flow modeling, making it highly relevant in the digital era. The research approach involves literature review, content analysis, and triangulation to ensure data validity, with the implication that category theory can enrich teaching and research in the field of algebra.
Analysis of Students’ Thinking Processes in Chemistry Problem Solving: A Literature Review of Learning Difficulties in Senior High School Purnomo, Vannesya Enriquetha; M. Muchson; Munzil
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.7999

Abstract

Chemistry learning difficulties among senior high school students often arise due to the abstract and hierarchical nature of chemical concepts, which require strong reasoning and problem-solving skills. These difficulties are closely related to students’ thinking processes when understanding concepts and solving problems. This study aims to analyze patterns of students’ thinking processes that contribute to learning difficulties, identify the stages where obstacles most frequently occur, and summarize recommended instructional strategies. This research used a descriptive qualitative literature review of 20 selected journal articles. The findings show that students’ thinking processes are generally unsystematic, as they tend to apply formulas without sufficient conceptual understanding. The most dominant obstacles occur at the conceptual and mathematical stages, followed by procedural and representational difficulties. Recommended strategies include diagnostic assessments, strengthening prerequisite concepts, contextual learning, and integration of multiple chemical representations.
Markov Chain Model for Daily Rainfall Modeling in Bengkulu City Rachmawati, Ramya; Firdaus; Ratna Widayati; Siska Yosmar; Risfa Fadila; Ajeng Siti Nurul Kharima
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.8000

Abstract

Bengkulu City is a region in Indonesia that is particularly vulnerable to shifts in rainfall patterns, which can have significant impacts on the agricultural sector, water resource management, and disaster mitigation. The uncertainty in rainfall patterns often complicates long-term planning. Hence, it is necessary to adopt a statistical approach that can model and predict rainfall characteristics with greater accuracy. This research aims to develop a Markov Chain model to represent the daily rainfall regime in Bengkulu City. The daily rainfall data are categorized into rainfall intensity states, namely: no rain, light, moderate, heavy, or very heavy rainfall. By leveraging historical daily rainfall data, this model is expected to identify the transition probabilities between these states. Based on the obtained steady-state probabilities, it can be concluded that regardless of today’s rainfall condition in Bengkulu City, the long-term probabilities for tomorrow’s weather are as follows: 38% for no rain, 43% for light rain, 13.8% for moderate rain, 4.2% for heavy rain, and 1% for very heavy rain.
The Effect Of The Think-Pair-Share Learning Model On The Learning Outcomes Of Grade XI Students At SMK Nusantara SinamBela, Markus Luhing; Dwi Saputri, Linda
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.8004

Abstract

The purpose of this study was to determine whether the think-pair-share learning model could influence the learning outcomes of 11th grade students at SMK Nusantara. This study used a quantitative method with a one-group pretest-posttest design. This type of design only has one sample subject that is given treatment and measured through pretest and posttest. This research was conducted at SMK Nusantara with a sample of 22 students from class XI SMK Nusantara. The research instrument used a test sheet with 5 essay questions.The data collection procedure was obtained through pretest and posttest questions. The research hypothesis was tested using a t-test. The t-test results showed a significant increase (sig. 0.001<0.05). The post-test average score of 78.72 was higher than the pre-test score of 58.72. Thus, it can be concluded that there was a difference in learning outcomes between the pre-test and post-test. This means that the think-pair-share learning model affected the learning outcomes of grade XI students at SMK Nusantara.
Development of an E-Book on Measurement, Quantities, And Units to Improve Digital Literacy of Grade X Students Titin Takke Rannu; Heru Kuswanto
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.8008

Abstract

This study aims to develop a Contextual Teaching and Learning (CTL)-based e-book integrated with digital literacy on the topic of measurement, quantities, and units to improve students' digital literacy. The research employed the Research and Development (R&D) method using the ADDIE model, which consists of the stages of analysis, design, development, implementation, and evaluation. The subjects of this study were Grade X students of SMAN 1 Sekatak, who were divided into an experimental class and a control class. The research instruments included a digital literacy questionnaire and validation sheets, which had been tested for validity and reliability. The validity test results showed that all instrument items were valid, with very high reliability (Cronbach’s Alpha = 0.874). The implementation results indicated a significant improvement in digital literacy in the experimental class compared to the control class. The average score of the experimental class increased more significantly after the use of the CTL-based e-book. In addition, the evaluation results showed that the e-book was practical, with a reliability value of 0.709, and received positive responses from students. These findings indicate that the CTL-based e-book integrated with digital literacy is valid, practical, and effective in improving students’ digital literacy and in supporting more contextual and meaningful physics learning.
The Effect of Contextual Digital Teaching Materials and Creativity on Students’ Scientific Literacy in the Digital Era Yanti Nainggolan, Irma; Hasibuan, Lily Rohanita; Harahap, Amin
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.8042

Abstract

Students’ scientific literacy remains low due to the continued use of conventional learning methods that are less contextual and interactive. This study aims to determine the effect of context-based and creative digital teaching materials on students’ scientific literacy. A quasi-experimental pretest-posttest control group design was used involving 60 seventh-grade students divided into an experimental class (n = 30) and a control class (n = 30). The instruments included scientific literacy tests, questionnaires, and observation sheets. The results showed that the average posttest score of the experimental class (30.03) was significantly higher than that of the control class (24.50), with t(58) = 2.38, p = 0.021. The N-Gain value of the experimental class was 0.21 (low category), which was higher than the control class at 0.004 (low category). These findings indicate that context-based and creative digital teaching materials are effective in improving students’ scientific literacy, although the level of improvement remains low.
Antimicrobial Activity Test of Alkaloid Rich Extract from Morinda citrifolia Leaves Against the Growth of Pathogenic Bacteria Staphylococcus aureus and Escherichia coli Josafat Alexander, Irving; Surbakti, Mariana; Sirait, Gloria; Silaban, Ramlan
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.8043

Abstract

This study aims to analyze the antimicrobial activity of alkaloid compounds from noni leaf extract (Morinda citrifolia) against the growth of pathogenic bacteria Staphylococcus aureus and Escherichia coli. The study applied a quantitative experimental laboratory approach. Extraction was carried out using the maceration method with 96% ethanol, followed by qualitative phytochemical analysis using Mayer, Dragendorff, and Wagner reagents to identify the presence of alkaloids. Using the Kirby-Bauer disk diffusion method, the antibacterial efficacy was evaluated at concentrations of 25%, 50%, 75%, and 100%. The primary indicator utilized was the size of the regions where bacteria could not thrive. Basic statistics and ANOVA analyses were utilized for data assessment. About 10.45% of alkaloids were found in the results. As the extract concentration grew, the quantity of bacterial development arrested did as well. The most notable impact was observed at the 100% concentration, with no growth zones of 18.9 mm for S. aureus and 15.8 mm for E. coli. The extract was more effective against Gram-positive bacteria. With p values less than 0.05, the statistical analysis found significant variations among the various treatments. Finally, the alkaloids found in noni leaves have a lot of potential to work as natural antibacterial agents and could be a substitute to fight antibiotic resistance.

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