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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 32 Documents
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Search results for , issue "Vol 10 No 2 (2025): October" : 32 Documents clear
Analysis of Bound Carbon Content and Combustion Rate of Banana Peel Waste Biobriquettes Irving Josafat Alexander; Gloria Sirait; Ramlan Silaban; Timotius Agung Soripada; Sunggu Sirait; Adriel Yakobus Nathaniel
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.6783

Abstract

This study aims to analyze the fixed carbon content and combustion rate of briquettes made from banana peel waste as a renewable energy alternative. The experimental method was used, involving key stages such as material preparation, carbonization process, briquette molding, and testing of fixed carbon content and combustion rate. The results showed that the fixed carbon content of the produced briquettes reached 87%, indicating good combustion quality and high energy storage capacity. Additionally, the combustion rate of the briquettes varied, with Sample A having a combustion rate of 0.017 grams/s and Sample B at 0.014 grams/s. This difference suggests that Sample B has a longer combustion duration. Thus, banana peel briquettes have the potential to be an efficient and environmentally friendly alternative fuel. Further research is needed to optimize the production process and enhance briquette efficiency.
ANALYSING LEVELS OF FLAVONOID, SAPONIN, AND TANNIN OF MANGO (Mangifera indica L.) PEEL WASTE AS AN ANTIBACTERIAL AGENT AGAINST Escherichia coli Alya Faiza; Rais Nur Latifah
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.6846

Abstract

Escherichia coli bacteria are a microorganism that is needed in the digestive system, but if the amount is excessive, it will be pathogenic and cause diseases, including diarrhea. Antibacterial can be used as an inhibitor of the development of microorganisms that are capable of causing disease and death. The focus of this study is to identify the phytochemical compounds contained in it, as well as how the bark of mango arumanis has antibacterial properties that fight Escherichia coli by using soxhletation extraction methods, uv-vis spectrophotometry, gravimetry, titrimetry and disc diffusion. The results showed that ethanol extract of mango arumanis peel contains flavonoids, saponins, alkaloids, and tannins with a flavonoid content of 2.27%; saponin 51.63%; and tannins 3.2553%. The antibacterial activity of Escherichia coli in the category is quite effective with a concentration of 46%.
Analysis of High School Students' Reasoning Ability in Solving Higher Order Thinking Skill Type Mathematics Problems Ana Muliyana; Asido Saragih; Jaya Santoso
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.6923

Abstract

This study investigates the mathematical reasoning abilities of high school students in North Sumatra who participated in the Del Mathematics and Science Competition (DMSC). Prior studies have revealed that students’ reasoning abilities are generally low; however, limited attention has been paid to their performance in competition-based settings. The purpose of this study is to assess the mathematical reasoning skills of students through higher-order thinking problems adapted from National Science Olympiad (OSN) materials. This research employed a qualitative descriptive method. The participants consisted of 25 high school students who reached the final round of the DMSC. The instrument used was a written mathematical reasoning test consisting of five essay questions. Students’ responses were analyzed using descriptive statistics, including mean scores and percentage values based on established scoring rubrics. The results showed that 18 students were categorized as having low reasoning ability and 7 students had a moderate level. The average reasoning score was 63.84%, which falls into the low category. Although students could perform calculations, most of them struggled with argument validation and logical explanation.The findings emphasize the necessity for educators to develop instructional strategies that foster students’ mathematical reasoning, particularly through approaches that stimulate higher-order thinking skills.
Design-Based Learning Activity and Self-Regulation in Education: A Review Putra Habib Dhitareka; Riana Nurismawati; Amaira Utami
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.6946

Abstract

Design-based learning has been widely recognized for its impact on the cognitive domain within educational settings. However, limited research has explored the interaction between design processes and students' self-regulation. This paper reviews 15 relevant studies to investigate the relationship between these two constructs. Findings suggest that design-based learning implemented through activities, projects, or problem-based tasks, fosters a complex, dynamic, and mutually reinforcing relationship with self-regulation. This interaction appears particularly robust in both science-oriented and art-related educational contexts. The review highlights overlapping cognitive and metacognitive elements that may influence this relationship. Further empirical research is needed to examine how self-regulation and design processes operate in practical pedagogical environments.
Students' Mathematical Modeling Ability in Answering 2022 PISA-released items in Scientific Context Jesika Dwi Putriani; Amrina Rosyada; Yusuf Hartono; Darmawijoyo
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.6948

Abstract

Mathematical modeling is one of the essential 21st-century skills that students must possess to connect mathematical concepts with real-world problems. Despite its recognized importance, the performance of Indonesian students in modeling tasks remains low, as reflected in the 2022 PISA results. This study aims to analyze students' mathematical modeling ability in solving scientific-context problems derived from the 2022 PISA-released items. The research used a descriptive qualitative method involving 25 seventh-grade students from SMP IT Raudhatul Ulum. Data were collected through students' written responses to four PISA problems and analyzed using a rubric based on modeling indicators by Blum and Leiss. The findings show that most students—56%—are in the low category of modeling ability, 36% are in the medium category, and only 8% reach the high category. Students struggle to translate real-world problems into mathematical models and interpret results contextually. These findings highlight the need for contextual learning strategies to strengthen students' modeling competencies in scientific settings.
The Influence of Student Development Understanding on Mathematics Education Students’ Readiness to Manage Diverse Classrooms Saraswati Haylian Chiani; Wiwin Putriawati; Rahmawati
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.6955

Abstract

This study aims to analyze the influence of students’ understanding of child development theories on their readiness to manage diverse classrooms. The research was conducted on 28 mathematics education students who had completed the child development course at STKIP Paracendekia NW Sumbawa. A Likert-scale questionnaire was used as the instrument in a quantitative descriptive study. Following validity and reliability testing, all items on the instrument were deemed reliable (Cronbach's Alpha > 0.6) and valid (r > 0.301). With average scores ranging from 3.2 to 4.0, descriptive analysis revealed that the students' comprehension of child development and their preparedness to oversee diverse classrooms were both at good levels. The highest score appeared on items related to the importance of developmental understanding for creating inclusive learning environments, while the lowest was on the ability to adapt teaching methods. Classroom management readiness and knowledge of child development were shown to be strongly and significantly correlated by Pearson correlation analysis (r = 0.83, p < 0.001). Additionally, a basic linear regression study revealed that almost 70% of the variance in classroom management readiness could be explained by knowledge of child development (R2 = 0.70). The regression equation found was Y = 0.84X + 0.56. These results validate that one of the most important indicators of future teachers' preparedness is their understanding of cognitive, social, and emotional development. In order to improve pedagogical competence and responsiveness in managing various learners, the study emphasizes the significance of incorporating developmental psychology into teacher education courses.
The Effect of Numbered Head Together Learning Model Assisted by Learner Worksheets on Mathematical Problem-solving Ability Jefry Samuel; Tan Hian Nio; Kerdid Simbolon
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7011

Abstract

The purpose of this study is to determine whether there is a difference in problem-solving ability assisted by worksheets between students who apply the NHT and Expository learning models. To determine whether or not there is an increase in problem-solving skills assisted by worksheets between students who apply the NHT and expository learning models. This research involved VII-A and VII-B classes of SMP Negeri 50 Jakarta with Quasi Experimental Design. Data obtained from posttest scores, where the data is normal and homogeneous while the data from the gain is normal and inhomogeneous then using the Independent Sample T-Test test, the results: (1) There is no difference in the mathematical problem-solving ability of students with the treatment of NHT and expository learning models. The average posttest value of mathematical problem-solving ability that gets the NHT learning model treatment reaches 58.72 while with the expository learning model treatment reaches 49.57. (2) There is a difference in the improvement of mathematical problem-solving ability between students who apply the NHT and expository learning models. The average gain data value of the Experiment class reached 46.56 and n - gain reached 0.5660 while the Expository class data gain reached 31.58 and n - gain reached 0.4126.
Investigating PBL’s Effect on Critical Thinking by Cognitive Style: A Quasi-Experimental Study Ismi Indriani Bahtiar; Hikmatul Khusna
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7065

Abstract

Critical thinking skills enable individuals to analyze various perspectives before reaching a conclusion, resulting in more appropriate and successful actions. FI and FD cognitive styles influence how students process information, with FI students tending to be more analytical and independent, while FD students are more dependent on context and external assistance in understanding the material. This research aims to: 1) To investigate the outcome of the impact of PBL method for evaluating students critical thinking abilities, 2) to investigate the variation among FI and FD cognitive styles of students in relation to their critical thinking abilities in the PBL model- applied class. This research employed a quantitative method based on a quasi- experimental configuration with a non-equivalent control group design involving 71 high school students. Data analysis techniques used t-tests and effect size calculations. The conclusion of this research suggest that: 1) The PBL model did not significantly improve students' critical thinking abilities, with the obtained effect size classified as moderate, 2) After learning with the PBL method, compared to students with FD cognitive styles, those with FI cognitive styles had noticeably superior critical thinking skills., where the average score for FI students was higher than that for FD students.
Optimizing Teacher Assistance In Mathematics Learning Through Scaffolding Thresholds Iis Sugiati; Sri Rahayuningsih; Anton Prayitno
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7112

Abstract

A 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' 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' 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' 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.
Development of E-Comics in PBL-Ethnomathematics on Critical Thinking Skills Amanda Oky Viana; Zaenuri Mastur
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7176

Abstract

The purpose of this study was to determine the process of developing e-comics based on PBL-Ethnomathematics on critical thinking skills. The type of research used was Research and Development (R&D) with a 4D model modified into 3D (Define, Design, and Develop). The data collection technique in this study used a eligibility test questionnaire. After the eligibility test was carried out by the final assignment supervisor, the percentage of the final score was 97.92% so that it was included in the category of very eligible to use.

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