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INDONESIA
Jurnal Pijar MIPA
Published by Universitas Mataram
ISSN : 19071744     EISSN : 24601500     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal Pijar MIPA (e-ISSN: 2460-1500 & p-ISSN: 1907-1744) is an open-access scientific periodical journal published by the Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA publishes original articles on current issues and trends in mathematics-science-science education studies. In addition, this journal addresses issues concerning environmental education and environmental science. The journal scopes are: a. Physics and Physics Education b. Chemistry and Chemistry Education c. Biology and Biology Education d. Natural Science and Science Education e. Mathematics and Mathematics Education f. Environmental and Environmental Education
Arjuna Subject : Umum - Umum
Articles 1,179 Documents
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Developing an Augmented Reality Chemistry Textbook on Acids and Bases with Ethnochemistry to Enhance Students Understanding of Chemical Representations Ariani, Sunniarti; Supriadi, Supriadi; Ardiyanti, Yunita; Hidayah, Weny Amanatul; Daraswita, Adina Ayu
Jurnal Pijar Mipa Vol. 20 No. 6 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i6.10067

Abstract

This development research presents an Augmented Reality(AR)-based textbook that integrates chemical concepts with the SASAMBO culture, highlighting an innovative approach to ethnochemistry. The study aims to produce a practical, valid, and effective AR textbook to enhance students’ understanding of chemical representations. The research follows the 4D development model: Define, Design, Develop, and Disseminate. The textbook was validated by two experts and tested for effectiveness with a limited implementation involving 26 students. Data were collected using validation and practicality questionnaires, as well as pretest-posttest evaluations. Validation data were analyzed using Aiken’s V, while improvements in students’ understanding were assessed with a paired t-test via IBM SPSS Statistics 25. Results show high validity (Aiken’s V = 0.9), strong practicality (86% average score), and a significant increase in understanding (t = 16.871, p < 0.005). These findings suggest that the AR-based textbook is a valid, practical, and effective tool for enhancing students’ comprehension of chemical representation.
Tidal Flood Prediction in Surabaya Based on Hydrometeorological Data Using Gradient Boosting and Logistic Regression Setyaningrum, Kartika Dwi Indra; Masfufah, Kiki Syalasyatun; Rahmawati, Endah; Hermanto, Ady
Jurnal Pijar Mipa Vol. 20 No. 6 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i6.10068

Abstract

This research aims to develop a predictive model for tidal inundation at Tanjung Perak Port in Surabaya, a region identified as critical and highly susceptible to such events. The foundational data incorporated comprises hydrometeorological indicators, such as lunar cycles, tidal patterns, and precipitation levels, which were sourced from the BMKG Tanjung Perak Maritime Meteorological Station. A dataset comprising 26,275 individual data points was compiled and subsequently partitioned into training sets (80% of the data) and validation sets (20%) via randomization. This apportionment is intended to support the robustness and applicability of the developed model. The initial data preparation phase involved techniques such as data normalization, imputation of missing values, and the determination of variable weights based on their respective degrees of impact. Subsequently, two distinct machine learning methodologies were employed to construct the predictive framework: Gradient Boosting (specifically, XGBoost) and Logistic Regression. The efficacy of the resultant models was rigorously assessed using various metrics, including accuracy, confusion matrix analysis, ROC-AUC scores, and feature significance analysis. Analysis of the outcomes indicated that the Gradient Boosting model achieved a superior accuracy of 99.96%, whereas Logistic Regression attained 99.85%. An examination of the features revealed that lunar cycles and tidal conditions were the principal determinants of tidal inundation, with precipitation exerting a comparatively minor effect. These observations substantiate the efficacy of integrating suitable data preparation techniques with machine learning methodologies to achieve precise predictive outcomes. The principal contribution of this investigation is the establishment of a computational framework to facilitate the development of an advanced warning system for tidal flooding, thereby aiding hazard reduction and limiting adverse societal, financial, and operational consequences in littoral regions.
Development and validation of a critical thinking measurement instrument based on Megapodidae reinwardt bird ecotourism Yamin, M.; Jufri, A. Wahab; Hakim, Alifman; Gunawan, Gunawan; Sukarso, AA.; Rahmat, Joni
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i6.3302

Abstract

Critical thinking skills are important in sharing aspects of life in the current and future era of globalization and information. An important aspect of critical thinking is literacy. Literacy abilities within the scope of Natural Sciences refer to scientific literacy. The critical thinking test results show that students' critical thinking components must still be developed. This paper discusses developing and validating a critical thinking measurement instrument for prospective science-biology teacher students based on Megapodidae bird ecotourism. The aim is to develop and assess the validity, reliability, and characteristics of critical thinking skills instruments so that they can be used to measure critical thinking skills in Science-Biology prospective teacher students. Product development in the form of critical thinking skills test instruments in Biology learning for prospective teacher students at FKIP Unram. Instrument development is carried out in four steps: identifying indicators, developing collection items, making validity checks, and improving item quality. Instrument validation is by a learning expert from FKIP Unram. Essay form questions consist of 21 items with difficulty levels at medium and high levels. The results of expert validation analysis using Aiken's V method for each aspect are classified as valid with a value of 0.79. The instrument developed can be used as a valid and reliable measure of critical thinking ability.
Effect of Light Intensity on Zebra Fish (Danio rerio) Cell Regeneration Darniwa, Adisty Virakawugi; Cahyanto, Tri; Rahayu, Savira Ngesti
Jurnal Pijar Mipa Vol. 19 No. 2 (2024): March 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i2.4364

Abstract

Zebrafish (Danio rerio) is one of the model animals in cell regeneration studies because it has a high ability to regenerate tissue structures, one of which is its caudal fin. This study was conducted to determine the different light interventions on the regeneration of the caudal fin of zebrafish. The research method used is an experimental study with the observed parameters, including specific growth, absolute weight gain, length increase, and survival. A total of 28 male wild-type zebrafish were used in this study at the age of 3 months. The amputated zebrafish on its caudal fin was placed at different light intensities (control, 0 lux, 60 lux, and 90 lux). Parameter measurements were carried out every two days. ANOVA analyzed the data obtained with a significance level of 95%. The results showed that at a light intensity of 90 lux, the zebrafish tail fin regeneration was the most significant based on an increase in total length of 0.10 mm. Using a light intensity of 90 lux is the best condition in the regeneration process of the zebrafish caudal fin. The research findings could be further applied in the healing process of external wounds.
Effectiveness of post particular prolactin administration on follicle development the count in mice (Mouse muscle) female Merta, I Wayan; Kusmiyati
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i6.4818

Abstract

This study aims to test the effectiveness of postpartum prolactin administration on follicle development in the count in mice (Mouse muscle). This type of research is a true experiment using a completely randomized design (RAL). The sample for this study was mice (Mouse muscle) female strain BALB/C, aged ± 4 months with a body weight between 25-30 gr in a healthy condition and not pregnant. The data obtained was analyzed using the One-way analysis of variance (F test) with a significance level of 0.05, followed by the Least Significant Difference test (BNT. The research results show that the sig. (p) = 0.001< α = 0.05, so it can be concluded that postpartum administration of prolactin has a significant effect on follicular development of the count in mice (Mouse muscle).
Production of Biogas From a Mixture of Chicken Litter and Cow Manure and Its Effect on the Resulting Volume and C/N Ratio Tira, Hendry; Sutanto, Rudy
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.4942

Abstract

The livestock sector's waste is a potential raw material for producing biogas because it is abundantly available. This experiment aimed to understand the potential of two types of livestock waste to produce biogas. The two sources of raw material were mixed with different variations. The results showed that the volume of fermentation gas produced from livestock waste varied depending on the type and composition of the raw material used. Mixing was done to determine the best variation in producing biogas from chicken litter and cow manure. The volume ratio of litter to cow manure used was (0%:100%), (25%:75%), (50%:50%), (75%:25%), (and 100%:0%), with a total volume of 2 liters. In addition, 10% of EM-4 (effective microorganism) was added to the mixture of livestock waste that had previously been given 2 liters of water. The waste mixture was then fermented for 30 days. The fermentation process was carried out under mesophilic conditions at room temperature and pressure. This study showed that the higher the concentration of chicken litter in the mixture, the higher the carbon-to-nitrogen (C/N) ratio value. On the other hand, if there is a higher composition of cow manure in the mixture, the substrate pH value will be higher. Furthermore, a 50%:50% composition of chicken litter and cow manure produced a high volume of biogas. Similarly, the biogas formation rate in this composition showed the best performance. These results prove that the balance of carbon and nitrogen composition, temperature, and substrate acidity significantly affect biogas production.
Comparing Three Methods for Producing Carbon Dots from Mangosteen Peel Sugiarti, Sri; Safitri, Idayu; Darmawan, Noviyan
Jurnal Pijar Mipa Vol. 19 No. 2 (2024): March 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i2.4986

Abstract

Carbon dots are fluorescent nanoparticles that are around 10 nm in size. Carbon dots can be formed via pyrolysis, hydrothermal, and solvothermal procedures from raw materials such as mangosteen peels. Because it contains cyanidin and xanthone, which improve the intensity of carbon dot fluorescence, mangosteen peel waste can be utilized to make carbon dots. The presence of a urea passivation agent is expected to boost carbon dot luminescence intensity. The study aimed to develop carbon dots from mangosteen peel using three different methods: pyrolysis, hydrothermal, and solvothermal, and to assess their ability to produce luminous hues. Carbon dot yield was 21% by the solvothermal method, 5% by the hydrothermal method, and 2% by pyrolysis. All three methods produced blue carbon dot luminescence. The solvothermal method, hydrothermal procedure, and pyrolysis had the highest luminescence intensity. Adding urea as a passivation agent increased the luminescence of carbon dots. The solvothermal approach produced the highest carbon dot production and fluorescence intensity. The hydrothermal and solvothermal carbon dots made emissions at wavelengths of 413 nm and 454 nm, respectively, both corresponding to blue luminescence.
Developing affective learning strategies for science education: A literature review Nurhayati, Pipih; Fuadiah, Dzikra; Yustiana, Yusi Riska
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i6.5014

Abstract

This study aims to identify innovative, effective learning strategies in science education through a comprehensive literature review. The research utilized trusted databases, WoS and Scopus, which resulted in 19 scholarly articles that met specific inclusion and exclusion criteria. A total of 509 articles were obtained through keyword identification, then through the screening and eligibility stages, and 19 articles that met the criteria were retrieved. The findings underscore the importance of practical assessment and profiling in gaining valuable insights into students' emotional states and competencies. Moreover, the student-centered approach enhances self-awareness and establishes a deep emotional connection with scientific principles. This study highlights the substantial impact of the educational environment and teacher effectiveness on students' affective experiences, emphasizing the importance of fostering a positive and supportive learning atmosphere. The practical learning strategies identified have the potential to contribute to the advancement of science education by promoting emotional engagement and enhancing students' overall learning experience.
The Creation of A Three-Tier Multiple-Choice Diagnostic Test Instrument to Identifying High School Students' Misconceptions Regarding Biological Virus Material Sulistyoningrum, Puji; Ismail; Ali, Alimuddin
Jurnal Pijar Mipa Vol. 19 No. 2 (2024): March 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i2.5393

Abstract

This study aims to develop a diagnostic test instrument with three tiers focusing on viral material. Research and Development (R&D) constitutes a form of applied research. The participants for the Field Test were Class X students at SMAN 22 Bone, while those for the subsequent test were Class X students at SMAN 19 Bone. Interviews and documentation serve as the primary research methods employed in this study. A three-tier multiple-choice format is characterized by three levels of questioning within the multiple-choice framework. The resultant diagnostic test instrument comprises three tiers: the first tier includes questions, the second tier offers alternative explanations, and the third tier assesses respondents' confidence levels in selecting answers and providing justifications. The outcomes of this research include answer keys, test questions, and question grids as integral components of the instrument. This study demonstrates the validity of the developed instrument through validation conducted by expert validators. The reliability test yielded a robust average value of 0.91. Only 24 out of the 40 questions were deemed valid during the field test phase. Findings revealed that students exhibited an average misconception rate of 47.2%, spanning two indicators derived from the 40 questions. Notably, misconceptions were prominent in the discussion sub-topic concerning the earliest discovery of viruses and methods for distinguishing viruses and bacteria, with an average misconception rate of 56.8% in viral material. Developing a three-tier diagnostic test effectively identified students' misconceptions regarding viral material, indicating suitability and efficacy for educational application.
Seagrass Meadow Conditions in Coastal Waters of Siwak Bay Central Lombok Destiana, Elvina; Candri, Dining Aidil; Ahyadi, Hilman
Jurnal Pijar Mipa Vol. 19 No. 2 (2024): March 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i2.5519

Abstract

Seagrass is a flowering plant thriving in shallow sea waters and estuaries. Seagrass ecosystems are essential in supporting life in shallow seas as primary producers, biota habitats, sediment trappers, and nutrient trappers. Environmental factors affecting seagrass growth include temperature, salinity, pH, and substrate. The study was conducted in March-June 2023. This study aimed to determine the type and condition of seagrass beds in the waters of Siwak Bay. The method used in this study is the quadrant transect method at three research stations. There are seven types of seagrass identified, namely Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata, Cymodocea serrulata, Halodule pinifolia, Halodule uninervis, and Syringodium isoetifolium. The percentage of total seagrass cover is at a value of 37%-61%, indicating that the condition of seagrass beds in the waters of Siwak Bay is included in the unhealthy category. The highest species density found at station III in Halodule pinifolia was 483.5 stands/m², and the lowest was found at stations II and III in Thalassia hemprichii and Cymodocea serrulata with 0 stands/m². The average density value of seagrass beds in the waters of Siwak Bay is very dense. The highest type frequency was found in Cymodocea rotundata, with a value of 2.53. The tallest species diversity and diversity index was found at station II with values of 1.56 and 0.8, respectively. In contrast, the highest dominance index was found at station I, with a value of 0.44.

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