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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 98 Documents
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Analisis Kadar N-total Tanah pada Pertumbuhan Tanaman Jagung yang Diberikan Pupuk NPK-Biochar-Kitosan Roslina Imran; Astin Lukum; Wiwin Rewini Kunusa; Yuszda K. Salimi; Erni Mohamad; Arviani Arviani
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.v3i1.384

Abstract

Corn (Zea mays) is a widely cultivated crop in Gorontalo and has high economic value as well as an important role in food security. Fertilization is one of the key factors that influence the productivity of corn plants. This research aims to determine the combination of NPK fertilizer doses granulated with Biochar-Chitosan in enhancing the growth and productivity of corn plants, as well as its impact on the quality of total N soil content. The study was conducted by planting corn, applying fertilizer, and observing its growth through measurements of plant height, leaf length, stem diameter, cob weight with husk, and cob weight without husk. The observational data were then analyzed descriptively, summarizing or classifying the data set to provide an overview of the data. Additionally, the analysis of soil N-total content was conducted before and after the application of fertilizers. The research results show that the combination of NPK-Biochar fertilizer doses has a significant impact on the growth and productivity of corn plants. The 7.5-gram NPK-Biochar fertilizer dose yielded the best results in increasing plant height, number of leaves, stem diameter, and cob weight with and without husks compared to other doses. Soil chemical property analysis also indicates that the application of NPK-Biochar fertilizer has a positive impact on the quality of the soil's total nitrogen content.
The Effect of Ethnoscience Approach Through Problem Based Learning Model on Chemical Literacy Ability of Class XI Students on Reaction Rate Material at SMA Negeri 7 Gorontalo Riryn Tahir; Hendri Iyabu; Julhim S. Tangio; Mangara Sihaloho; Wiwin Rewini Kunusa; Thayban Thayban
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.v3i1.388

Abstract

The research aims to determine the effect of the ethnoscience approach through the problem-based learning model on the chemical literacy skills of Grade XI students in the reaction rate material at SMA Negeri 7 Gorontalo. The research employs a quasi experimental method with a nonequivalent control group design. The sample consisted of Grade XI IPA ( Natural Science) students from SMA Negeri 7 Gorontalo. The instrument used in this research was an essay test. Data processing and analysis were conducted using Microsoft Office Excel and SPSS version 16. The hypothesis test results on students’ post-test data using the Mann-Whitney test at a significance level of α = 0.05 showed that the Asymp. Sig. (2-tailed) value was less than 0.05 (0,002 < 0,05). Therefore, H1 was confirmed, and H0 was rejected. The N- Gain test results also indicated that the ethnoscience approach through the problem-based learning model was moderately effective in improving students’ chemical literacy skills in reaction rate material, with the experimental class achieving an N-Gain score percentage of 57.13% (moderately effective category), while the control class achieved a percentage of 31.42% (ineffective category). In conclusion, the ethnoscience approach through the problem-based learning model significantly affects students’ chemical literacy skills in reaction rate material.
Implementasi Model Pembelajaran Kontekstual Menggunakan Media Klinometer untuk Meningkatkan Hasil Belajar Matematika Siswa Muhammad Azkal Azkiya; Maya Rayungsari; Dewi Nurmalitasari
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.v3i1.391

Abstract

This research aims to enhance students' mathematics learning outcomes by implementing a contextual learning model utilizing clinometer paraji as a teaching aid. This study employs Classroom Action Research (CAR), which consists of two cycles, each involving the stages of planning, implementation, observation, and reflection. The participants in this study were grade X students from SMK Yadika Pasuruan. Data collection was carried out through observations of teacher and student activities, tests to measure learning outcomes, and student response questionnaires regarding the applied learning model. The findings reveal that the contextual learning model using clinometer paraji media effectively improves students' mathematics learning outcomes. Furthermore, students showed enthusiasm and increased interest in mathematics when learning through this approach. Therefore, the clinometer-based contextual learning model is a practical and effective method for teaching mathematics.
Identifikasi Senyawa Metabolit Sekunder Ekstrak Metanol Daun Pletekan (Reullia tuberosa L.) Nur Rafida Akub; Nurhayati Bialangi; Weny J.A Musa; Yuszda K. Salimi; Wiwin Rewini Kunusa; Ahmad Kadir Kilo
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.v3i1.392

Abstract

Indonesia is renowned for its abundant and diserve natural resources, including various plants. Many medicinal plants are traditionally utilized due to their therapeutic benefits. The utilization of minnieroot leaves as a traditional medicine shuld be supported by comprehensive studies to identify the active compounds, thereby omproving their quality, safety and afficacy. Secondary metabolites in minnieroot, particularly in the leaves, contain polyphenolic compounds, while the roots are known to contain flavonoids. This study aims to identify secondary metabolite compounds in minnieroot (Reullia tuberosa L.) leafs methanol extract. The study utilized methanol as a solvent for the extract solution became colorless, resulting in a extract yield of 8,02% of the leaf’s weight. The qualitative test confirmed the presence of secondary matebolites, specifically flavonoids and tannin in the methanol extract of minnieroot leaves. The final result from column chromatography separation shows that crystals are formed in the sixth vial. The crystals areb brownish blackn in color and weigh 0, 1235 g.
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.

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