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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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Pengaruh Penggunaan E-LKPD Berbasis Liveworksheets dalam Meningkatkan Hasil Belajar Siswa di SMP Negeri 14 Kota Serang IPA Kelas 7 Materi Bumi dan Tata Surya Anas Ansoriyah; Supardi Supardi
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.v3i2.606

Abstract

This study aims to determine the effectiveness of the use of Electronic Student Worksheets (E-LKPD) based on Liveworksheets in improving the learning outcomes of class VII students of SMP Negeri 14 Kota Serang on the Earth and Solar System material. LKPD functions to connect teaching and learning activities so that effective interactions occur between students and teachers, which can increase student activity to improve academic achievement. This study aims to identify improvements in student learning outcomes using ELKPD liveworksheet. This study uses a quantitative research type with a Pre-experimental design that collects and analyzes numerical data using research instruments. One Group Pretest - Posttest Design is a written design used which is combined with library research, namely using various supporting literature references in the data collection process without going into the field. Thus, it can be concluded that E-LKPD Liveworksheet is effective as a learning medium to improve student learning outcomes on the Earth and Solar System material
Exploring the Potential of Astaxanthin Extracted from Shrimp Shell Waste as a Functional Feed Additive in Duck Nutrition Anwar, Rohimatul; Widyastuti Widyastuti; Annisa Ananda
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.v3i2.615

Abstract

Shrimp shell waste is a potential marine biomass resource rich in bioactive compounds such as astaxanthin and chitin, yet remains underutilized in the livestock sector. This study aimed to evaluate the effect of incorporating shrimp shell meal into duck (Anas sp.) feed rations on the yolk color intensity of duck eggs. The experimental design applied a completely randomized design (CRD) with a single factor and four treatments: D0 (100% rice bran, control), A1 (rice bran + 2% shrimp shell meal), A2 (rice bran + 6%), and A3 (rice bran + 10%), with a 21-day observation period. The primary parameter measured was yolk color intensity, assessed visually using a standardized color scale. The results indicated that the addition of shrimp shell meal significantly enhanced yolk color intensity, with the highest pigmentation observed in the A3 treatment. Astaxanthin, functioning as a natural carotenoid pigment, was biologically absorbed and distributed into the yolk via lipophilic pathways, while chitin supported gut health and nutrient absorption efficiency. This study aligns with the principles of the circular economy by valorizing marine processing waste as a functional feed ingredient. A 10% inclusion rate was found to be visually optimal; however, further studies are required to assess its physiological impacts and economic feasibility in broader production contexts.
Analisis Perencanaan Pembelajaran di MAN 2 Padang Adilah Filzhah; Nita Putri Utami
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.v3i2.622

Abstract

Systematic mathematics learning planning is very important in supporting the achievement of student competencies, especially in the implementation of the Independent Curriculum. This study aims to describe the process of planning Mathematics learning at MAN 2 Padang City in the context of implementing the Independent Curriculum and the 2013 Curriculum. The method used is a qualitative approach with a descriptive design. The research instruments are in the form of interview guidelines and observation sheets. Data collection techniques are carried out through in-depth interviews with Mathematics teachers and the Deputy Head of Madrasah for Curriculum, as well as direct observation of learning planning documents and activities. The results of the study show that the planning stages start from the preparation of the Madrasah Operational Curriculum (KOM), academic calendar, details of effective weeks, Annual Program (Prota), Semester Program (Promes), analysis of CP, TP, KD, and KI, preparation of KKTP and KKM, to the development of Learning Objective Flow (ATP) and syllabus. Although planning has been carried out systematically and collaboratively, teachers still face challenges in developing contextual ATP and compiling an applicable syllabus. Thus it can be concluded that the Learning planning is very effective, namely 91.74%. Therefore, further training is needed to improve the quality of learning planning based on the Independent Curriculum.
Efektivitas Pelaksanaan Evaluasi Formatif dalam Pembelajaran Matematika di kelas XI MAN 2 Kota Padang A’zima Ashari Fauzi; Nita Putri Utami
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.v3i2.624

Abstract

This study aims to examine the effectiveness of formative assessment in mathematics learning for tenth-grade students at MAN 2 Kota Padang. A descriptive qualitative approach was used with data collected through observation, interviews, and documentation. The data were analyzed using data reduction, data display, and conclusion drawing techniques. The findings show that formative assessments were systematically implemented and aligned with learning objectives. Teachers employed various question types, especially essay questions, to assess students’ higher-order thinking skills. However, challenges such as limited time and lack of question variety were noted. It can be concluded that the formative assessment was fairly effective but requires further development in variation and technical support.
Pelaksanaan Pembelajaran Matematika Berbasis Kurikulum Merdeka: Studi Kasus di MAN 2 Kota Padang Izatul Hasanah; Nita Putri Utami
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.v3i2.625

Abstract

This study aims to describe the implementation of mathematics learning based on the Independent Curriculum at MAN 2 Kota Padang, focusing on teacher-student interaction and the overall effectiveness of the learning process. The observation covered three main phases: introductory, core, and closing activities. A phenomenological approach was applied using both qualitative and quantitative methods. Data were collected through direct classroom observations, interviews with mathematics teachers and students, as well as analysis of teaching documents. Instruments included Yes-No questionnaires, interview guidelines, and documentation review. The findings indicate that the learning process aligns with the principles of the Independent Curriculum, as reflected in the varied instructional strategies, active student engagement, and teacher readiness in applying learning modules. The effectiveness of learning was very high, with 95.21% in grade X and 92.99% in grade XI. Challenges included limited time and lack of participation from some students. Overall, the learning process fostered an active, meaningful environment that supports character development.
Efektivitas Pelaksanaan Pembelajaran Matematika di SMK Negeri 6 Padang Elsi Retriani; Nita Putri Utami
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.v3i2.632

Abstract

This study aims to analyze the effectiveness of mathematics learning implementation at SMK Negeri 6 Padang, reviewed from three main stages: preliminary activities, core activities, and closing activities. The method used is a combination of qualitative and quantitative approaches. Data collection techniques include participatory observation, in-depth interviews with teachers and students, as well as documentation. The research instruments consist of observation guidelines, interview guidelines, and questionnaires. The results of the study indicate that during the preliminary stage, teachers have conducted apperception but have not yet optimally implemented diagnostic assessments. The core activities are still dominated by conventional methods without the integration of contextual approaches or educational technology. The closing activities fully reflect in-depth reflection and are accompanied by adequate follow-up learning.Overall, the effectiveness of mathematics learning implementation at SMK Negeri 6 Padang is 77.77% in grade X and 77.77% in grade XI, which falls into the effective category. It is necessary to develop innovative learning strategies, utilize technology-based learning media, and enhance student engagement to make the learning process more active, meaningful, and aligned with the needs of vocational education.
Penerapan Media Pembelajaran Paludarium untuk Meningkatkan Minat Belajar Siswa pada Pembelajaran Biologi Fu’ad Hasan; Haning Hasbiyati; Imam Bukhori Muslim
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 3 (2025): 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.v3i3.646

Abstract

The implementation of learning at Ma Ma'arif Ambulu experienced problems in the form of low student interest in learning. This incident was shown from the results of student learning in the previous semester with only 50% of students getting a KKM score of 70. The cause of the lack of delivery of learning in class was due to the lack of learning media, when delivering learning in class. This resulted in students being less interested and less active in seeking more information related to the material being studied. The study was conducted using classroom action research with a data analysis method in the form of a questionnaire to measure student interest in learning. Based on the analysis of data from cycle I, it was found that student interest in learning was in the low category of 56.75% and cycle II, it was found that student interest in learning was 83.71% which was included in the high ability category. The conclusion obtained is that learning using the Paludarium learning media can increase the interest in learning of class X IPA I MA Ma'arif Ambulu students in the 2022/2023 academic year totaling 28 students in the Ecosystem material.
Peningkatan Hasil Belajar Biologi melalui Pendekatan Kontekstual Berbantuan PowerPoint Interaktif: Studi pada Materi Sistem Pernapasan Manusia Marchelle Nhatanael Walangitan; Herry M. Sumampouw; Anita C. Tengker
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 3 (2025): 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.v3i3.708

Abstract

Improving the quality of biology learning in secondary schools requires pedagogical innovations that connect academic content with real-life contexts and leverage digital technology. This study aims to analyze the effect of a contextual teaching approach assisted by interactive PowerPoint on students’ learning outcomes in the human respiratory system topic. A true experimental design with a pretest–posttest control group was employed at SMA Negeri 1 Langowan, involving two eleventh-grade classes selected through simple random sampling. The experimental class received contextual instruction integrated with interactive PowerPoint, while the control class was taught using conventional methods. Data were collected through validated achievement tests and analyzed using normality and homogeneity tests, followed by independent and paired t-tests. The results indicate a significant improvement in learning outcomes for students in the experimental class compared to the control group. The experimental group’s posttest scores were substantially higher, and the difference was statistically significant. Integrating a contextual approach with interactive visualization effectively enhanced students’ understanding of abstract biology concepts, promoted active participation, and strengthened learning motivation. These findings support constructivist theory and highlight the relevance of contextual teaching in science education aligned with the Merdeka Curriculum. The study implies the importance of implementing context-based strategies combined with simple digital media to improve biology learning effectiveness. Future research may explore its impact on non-cognitive skills such as critical thinking and scientific attitudes. Furthermore, the results of this study provide opportunities for teachers to be more creative in designing teaching materials that are not only informative but also interactive and relevant to students' lives. By utilizing media such as interactive PowerPoint, teachers can present complex biological content in a more engaging and understandable way.
Isolasi, Identifikasi, dan Karakterisasi Mikroorganisme (Bakteri, Jamur, dan Yeast) dari Fermentasi Ikan Bekasam dengan Teknik Pewarnaan Gram dan Pewarnaan Spesifik Putri Rahmadani; Ardi Mustakim
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 3 (2025): 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.v3i3.711

Abstract

Fermentation of ikan bekasam is a traditional process that involves the activity of microorganisms to produce a product with distinct taste, aroma, and texture. This process includes various microorganisms, such as bacteria, fungi, and yeasts, that play a crucial role in the transformation of fish properties during fermentation. This study aims to isolate, identify, and characterize the microorganisms involved in the fermentation of ikan bekasam using Gram staining and specific staining techniques. The isolation process was carried out using selective media to grow microorganisms from the bekasam samples, including both the fish and the fermentation liquid. Microorganism identification was performed by observing colony morphology, microscopic characteristics, and biochemical reactions. Gram staining was used to differentiate between Gram-positive and Gram-negative bacteria, while specific staining techniques were employed to detect certain cellular structures that aid in the identification of microorganisms. The characterization of microorganisms included an analysis of their physiological and biochemical properties, such as their ability to produce enzymes or secondary metabolites that play a role in fermentation and the development of the characteristic bekasam flavor. The results of the study showed that ikan bekasam contains a variety of microorganisms, including lactic acid bacteria such as Lactobacillus spp. and Pediococcus spp., which play a primary role in fermentation by providing the characteristic sourness. In addition, yeasts such as Saccharomyces cerevisiae were found in the bekasam samples, contributing to the fermentation process. Fungi, such as Aspergillus spp., were also isolated, although their role in the fermentation of ikan bekasam is more limited. This study provides insights into the diversity of microorganisms involved in the fermentation of ikan bekasam and their potential applications in the food industry. These findings open up opportunities to optimize the fermentation process by utilizing these microorganisms to produce more consistent and high-quality bekasam. Future research could further explore the optimal conditions for improving the quality of this fermented product.
Identifikasi Morfologi Bakteri Fermentatif pada Bekasam Ikan Nila melalui Pengamatan Mikroskopis Langsung Rifky Rifaldo Munthe; Ardi Mustakim
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 3 (2025): 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.v3i3.715

Abstract

Bekasam, a traditional Indonesian fermented fish product, is produced through a natural fermentation process involving complex microbial communities, particularly fermentative bacteria. These microorganisms play a vital role in developing the product’s characteristic flavor, aroma, and texture. This study aimed to identify the morphological characteristics of fermentative bacteria present in bekasam made from Nile tilapia (Oreochromis niloticus) using direct microscopic observation without staining. Fresh samples of bekasam were collected and subjected to serial dilution before being cultured on nutrient agar (NA) medium. The cultures were incubated at room temperature for 24–48 hours to allow colony formation. Morphological examination was carried out by observing the colonies directly under a light microscope to assess cell shape, size, and arrangement. The results demonstrated a diversity of bacterial morphologies, with the majority consisting of rod-shaped (bacillus) and spherical (coccus) forms. Bacillus cells were often observed singly or in short chains, whereas coccus cells appeared either as single units, in pairs (diplococci), or forming short chains (streptococci). The morphological diversity observed suggests that multiple bacterial species may be involved in the fermentation process, each contributing differently to biochemical transformations such as protein degradation, lactic acid production, and flavor compound formation. Although morphological characterization alone cannot provide definitive bacterial identification, these findings serve as preliminary data for subsequent microbiological and molecular analyses. Further research using biochemical tests and molecular approaches, such as 16S rRNA gene sequencing, is recommended to confirm species identity and to explore their specific roles in fermentation. Understanding the microbial composition of bekasam can provide valuable insights for optimizing fermentation conditions, improving product consistency, and ensuring safety in traditional fish-based fermented foods.

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