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Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam
Published by Asosiasi Riset Ilmu Matematika dan Sains Indonesia
ISSN : 30481732     EISSN : 30628652     DOI : 10.62383
Core Subject : Education,
Mathematics
Sub Rumpun Ilmu IPA: 1. Fisika 2. Kimia 3. Biologi (dan Bioteknologi Umum) 4. Bidang Ipa Lain Yang Belum Tercantum Sub Rumpun Ilmu MATEMATIKA: 1. Matematika 2. Statistik 3. Ilmu Komputer 4. Bidang Matematika Lain yang Belum Tercantum
Arjuna Subject : Matematika - Matematika Komputer
Articles 101 Documents
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Penerapan Model Pembelajaran SM2CL untuk Meningkatkan Keterampilan Berpikir Kritis Kreatif dan Minat Belajar Biologi Siswa Injilia Tewal; Fanny Nella Nanlohy; Nonny Manampiring
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.394

Abstract

The goal to be achieved from this study is to Improve Critical and Creative Thinking Skills, as well as Increase Students' Interest in Learning Biology in Class XI A4 SMA Negeri 1 Airmadidi Through the Application of the Synectics, Mind Maps, Cooperative Learning (SM2CL) Learning Model. The problems in this study are low interest in learning students; Students are more likely to be passive when studying; Teachers have never used learning models that can make students think critically and creatively; Learning is more teacher-centered. The research method used is the Classroom Action Research (PTK) method. The results of the research conducted in class XI A4 of SMA Negeri 1 Airmadidi showed that the acquisition of scores in the first cycle with a classical completion percentage of 38.88% increased to 66.66% in the second cycle. Although the classical completeness did not reach 75%, individually. Namely, 24 out of 36 students got a satisfactory score above the KKM, the highest score of 95, and the lowest score of 85 in cycle II. The score obtained from the learning interest questionnaire in the first cycle was at the percentage of 68% to 70% in the second cycle, and both were in a good category. Then, subject teachers and the school need to consider and evaluate some things, namely, the character of 12 students who did not want to do assignments at all from cycle I to cycle II.
Cara Berpikir Visual Siswa SMA dalam Memahami Masalah Dimensi Tiga Fran Susanto
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.399

Abstract

This study aims to describe the visual thinking of high school students in understanding three-dimensional problems. This research is a descriptive research with a qualitative approach. Two students with medium and high mathematical skills of the female gender were selected as research subjects. Data was collected by giving three-dimensional problem-solving tasks according to Polya's steps and interviews. Students' visual thinking is described based on seeing, recognizing, imagining, and showing. The results of the study show that at the comprehension stage, students with medium and high mathematical skills do looking and seeing, recognizing and imagining at the planning stage, and showing the steps to implement the problem-solving plan appropriately but in a different way, students with medium ability use more concise steps and vice versa for high-ability students; At the re-examination stage, the two subjects showed (showing) the conclusion of the solution solution, but did not show (showing) re-checking.
Pemanfaatan Chatbots dalam Pembelajaran Matematika di Sekolah Dasar: Pengaruh terhadap Pemahaman dan Kemandirian Belajar Hardika Saputra
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.410

Abstract

The utilization of technology in education has been increasingly developed, one of which is the use of chatbots in mathematics learning in elementary schools. This study aims to analyze the impact of chatbot usage on students' understanding of mathematics, learning independence, and time management. This research uses the Systematic Literature Review (SLR) method by reviewing various recent studies related to the implementation of chatbots in learning. The findings indicate that the use of chatbots can enhance students' understanding of mathematical concepts, strengthen learning independence, and help students manage their learning time more effectively. Chatbots provide opportunities for students to learn independently, give real-time feedback, and offer flexibility in learning time. The implications of this research emphasize the importance of integrating technology, specifically chatbots, to support more interactive and adaptive mathematics learning in elementary schools. The study also provides recommendations for further development of educational technology to improve the quality of future learning.
Analisis Soal HOTS Materi Asam Basa Untuk Mengukur Keterampilan Berpikir Kritis Dengan Rasch Model Luluk Kamilia
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.411

Abstract

One of the competencies that must be mastered to face global competition in the 21st century world of work is individuals who have critical thinking skills. Critical thinking is one form of HOTS application. The purpose of this study was to analyze the HOTS test instrument to measure critical thinking skills. The method used is Research and Development which is reduced to 3D (define, design, development). The subjects in this study were students of class XI MIPA MAN 2 Wonosobo, with data collection techniques namely interviews, tests and questionnaires. The data analysis technique in this study was validation by experts and analysis with the Rasch model assisted by Ministep software. Analyzes with the Rasch model include summary statistics, item fit, item size, item correlation, and person size. Validation from experts gets an average score of 140 out of 160 with an average proportion of 87.7% which indicates a very valid instrument. Summary statistics for the testing phase show that the measurement of the person is 0.69 and 0.73 and the measurement of the item is 0.86 and 0.87, which means that the consistency of the student's answers is in the sufficient category, but the quality of the items is good. For the person measure implementation test stage it showed 0.69 and 0.74 meaning that the consistency of student answers was also in the sufficient category, while the quality of the items for the reliability aspect was in the special category with values ​​of 0.96 and 0.97. Item Fit or the level of adding item items shows a 100% fit item from the testing stage to implementation.
Uji Organoleptik & Karakteristik Fisikokimia Serta Aktivitas Antioksidan Produk Susu Berbasis Kacang Sacha Inchi (Plukenetia volubilis L.) Nurfadilah M. Kasim; Netty Ino Ischak; Yuszda K. Salimi; Nurhayati Bialangi; La Ode Aman; Erni Mohamad
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.412

Abstract

This research aims to formulate and examine the physicochemical characteristics and antioxidant activity of sacha inchi (Plukenetia volubilis L.) as a plant-based milk. Moreover, this research also aims to conduct organoleptic tests on the products. The sacha inchi milk is formulated with five ratios: SI1 (sacha inchi 1:10 parts water), SI2 (sacha inchi 2:10 parts water), SI3 (sacha inchi 3:10 parts water), SI4 (sacha inchi 4:10 parts water), and SI5 (sacha inchi 5:10 parts water). Organoleptic tests are carried out by assessing the aspects of taste, color and aroma of the product with a score range of 1 (least preferred) - 5 (most preferred). The results of the organoleptic test showed that the most preferred sacha inchi peanut milk formulation was SI5 with a preference level reaching a score of 4.48. The SI5 formulation is more dominantly preferred because it is richer in taste, color and aroma. Then continued with physicochemical testing which includes water content, ash content, fat content, protein content, carbohydrate content, calcium content, pH, and viscosity and IC50 antioxidant activity test using UV-Vis Spectrophotometer instrument. The results of physicochemical tests and IC50 antioxidant activity conducted in this study were respectively: water content (74.10%), ash content (0.65%), fat content (19.15%), protein content (4.29%), carbohydrate content (1.82%), calcium content (0.043%), pH (6.01), viscosity (209 mPa∙S), and IC50 antioxidant activity (429.10 ppm).
Need Assessment : Development of Massive Open Online Courses Video-Based Competency Training Management Andi Mardiana Paduppai; Nerru Pranuta Murnaka; Fransiskus Ransus
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v2i3.415

Abstract

PP PAUD and Central Java Dikmas are tasked with overseeing all early childhood education institutions and community education throughout the Central Java region. This study aims to analyze the process of planning, organizing, implementing, and evaluating the massive open online course (MOOC) that took place at PP PAUD and Dikmas Central Java during the COVID-19 pandemic. This research is quantitative research with a descriptive approach. The sample in this study were PAUD teachers throughout Central Java and MOOC Education and Training supervisors at PP PAUD and Dikmas Central Java. Sample selection was carried out using the Simple Random Sampling method. The research instruments used were questionnaires, documentation, and interviews that experts have validated. Data analysis techniques used descriptive statistical analysis and percentages for questionnaire results and verbal analysis for interviews and documents. Based on the results and analysis of the discussion, we observe that MOOC in PP PAUD and Central Java Dikmas is going well. However, the content developed must still be adapted to the scope of PP PAUD. The materials in MOOCs need to be entirely focused on the essential competencies and core competencies of PP PAUD. Therefore, it is necessary to manage and develop video-based training through MOOCs.
Pengaruh Model Pembelajaran Discovery Learning Berbantuan E-LKPD Terhadap Hasil Belajar Peserta Didik pada Materi Usaha dan Energi Kelas X Smanegeri 1 Percut SEI Tuan Kartini Anggi Agata Sihotang; Muhammad Kadri
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 2 (2025): JUNI : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i2.475

Abstract

This study aims to determine the effect of the Discovery Learning model assisted by E-LKPD on students' physics learning outcomes. The research was conducted at SMA Negeri 1 Percut Sei Tuan. This type of research is a quasi-experimental design with a pretest-posttest control group design. The sampling technique used in this study was cluster random sampling, consisting of an experimental class and a control class, each with 36 students. The solution to address the research problem was to apply the Discovery Learning model assisted by E-LKPD in the experimental class and conventional learning in the control class. The subjects of this study were students in classes X-3 and X-4. The instrument used was a learning test in the form of 15 multiple-choice questions. Before the different treatments were applied, a pretest was conducted, resulting in an average pretest score of 48.1 for the experimental class and 45.6 for the control class. Normality and homogeneity tests on the pretest data indicated that both classes' data were normally distributed and homogeneous. The two-tailed t-test resulted in a value of tcount < ttabel = = 0.97 < 1.994, which means H0 was accepted, indicating that the initial critical thinking ability of the experimental and control classes was the same. After the different treatments, a posttest was conducted for both classes, which resulted in an average posttest score of 76.5 for the experimental class and 63.5 for the control class. Normality and homogeneity tests on the posttest data showed that both classes' data were normally distributed and homogeneous. The one-tailed t-test resulted in tcount < ttabel = = 4.860 > 1.666, so the alternative hypothesis (Ha) was accepted. It can be concluded that the use of Discovery Learning assisted by E-LKPD has a significant effect on students' learning outcomes on the topic of work and energy in class X at SMA Negeri 1 Percut Sei Tuan.
Rendahnya Pemahaman Konsep Matematika Siswa Kelas V SDN 33 Kalumbuk Melisa Asgustira
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 2 (2025): JUNI : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i2.464

Abstract

Understanding of Mathematics concepts is an important factor in determining students' learning success. However, the results of observations at SDN 33 Kalumbuk showed that fifth grade students still had difficulty in understanding Mathematics concepts. This can be seen from the low level of learning completion, which was only 36.84% in class VA and 33% in class VB. The low understanding of concepts is caused by the lack of interactive learning methods, so that students get bored easily and are less involved in the learning process. This article discusses the importance of understanding concepts in Mathematics learning and solutions that can be applied to improve student understanding. One of the proposed strategies is the use of the Make a Match learning model, which can increase student engagement and help them understand concepts more concretely and interestingly. In addition, problem-solving approaches, the use of visual media, group discussions, and continuous evaluation can also be applied to improve learning effectiveness. By implementing innovative and interactive learning methods, it is hoped that students' understanding of Mathematics concepts can improve, so that they are better prepared to face academic challenges and are able to apply Mathematics concepts in everyday life.
Sejarah dan Perkembangan Sistem Bilangan di India Heby Anggriyani Damanik; Lenni Mariana Harahap
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 2 (2025): JUNI : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i2.470

Abstract

This study discusses the history and development of the number system in India and its influence on the evolution of mathematics worldwide. The Indian number system has evolved since the Indus Valley Civilization and has undergone significant innovations, such as the invention of the number zero by Brahmagupta and the development of the place value system, which forms the basis of the modern decimal number system. This research employs a qualitative method with a library research approach, involving the analysis of various written sources, such as books, academic journals, and historical articles on the Indian number system. The findings indicate that the Indian number system has had a profound impact on the advancement of mathematics, particularly after it was introduced to the Islamic world by scholars such as Al-Khwarizmi, who later disseminated it to Europe, making it the foundation of the numerical system used today. Additionally, the Indian number system contributed to the development of various branches of mathematics, including algebra, calculus, and number theory, and served as the foundation for modern technology, including computers and calculators. Therefore, understanding the history of the Indian number system should be reinforced in mathematics education, accompanied by further research on its applications in contemporary science and technology.
Efektivitas Pendekatan Saintifik dalam Meningkatkan Hasil Belajar IPA Siswa SD Nurul Qolbi; Adrias Adrias; Aissy Putri Zulkarnaen
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 2 (2025): JUNI : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i2.478

Abstract

This study aims to examine the effectiveness of the scientific approach in improving Natural Sciences (IPA) learning outcomes among Elementary School students. The method used is a literature review with a descriptive qualitative approach by analyzing various scientific sources such as journal articles, books, and relevant research reports from the past five years. The findings indicate that the scientific approach has a positive impact on students' understanding of science concepts, critical thinking skills, as well as motivation and engagement in the learning process. This approach encourages students to actively participate in scientific processes through the stages of observing, questioning, experimenting, reasoning, and communicating. These stages help make learning more meaningful, contextual, and aligned with students’ cognitive development. However, its implementation still faces several challenges, such as limited facilities and infrastructure, constrained instructional time, and the lack of teacher training in applying this approach effectively. Therefore, support from various stakeholders—including schools, government, and the community—is needed to overcome these obstacles and enhance the quality of science education. Overall, the scientific approach is considered effective in creating interactive, reflective, and student-centered science learning at the Elementary School level.

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