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Saprizal Hadisaputra
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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 30 Documents
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Search results for , issue "Vol. 20 No. 2 (2025)" : 30 Documents clear
Impact of Rainfall Patterns, Chemical and Biochemical Transformation in Agricultural and Environmental Systems Anggraini, Welly; Manaasika, Zidny; Wiliyanti, Vandan
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8526

Abstract

Climate change driven by rising air temperature and humidity significantly impacts agricultural ecosystems' rainfall patterns and chemical and biochemical processes. This study aims to analyze the relationship between temperature, air humidity, and rainfall and their effects on chemical and biochemical transformations in agricultural and environmental systems in Lampung. This research employs a descriptive quantitative and qualitative approach. Primary data were collected through field observations, soil chemical testing, and public health surveys. Secondary data regarding temperature, humidity, and rainfall were obtained from BMKG. Surveys were conducted using structured questionnaires with purposive sampling techniques targeting affected communities. Data were analyzed using descriptive statistics and linear regression to examine relationships between variables, while chemical analysis measured changes in pH, nutrients, and greenhouse gas emissions. Data processing was performed using SPSS and Excel, and triangulation was conducted to ensure accuracy. The findings indicate that increases in temperature and humidity correlate with a 15% rise in annual rainfall over the last decade. The primary observed effects include increased soil acidity (pH decrease by 0.5-1.0 units), a nitrogen level reduction of up to 20%, and increased greenhouse gas emissions such as CH4 and CO2. Additionally, higher rainfall contributes to increased soil erosion and water pollution. In the health sector, surveys indicate a rise in waterborne diseases (diarrhea, cholera) and respiratory disorders. In conclusion, changes in temperature and humidity have complex effects on agriculture, the environment, and public health, necessitating adaptation and mitigation strategies to reduce their negative impacts.
Exploring Local Wisdom: Ethnoscientific Study of Durian Tempoyak-Making in Indragiri Hilir as a Source of Science Learning Lestari, Ina; Ikhsan, Muhammad
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8532

Abstract

Local wisdom-based learning is one of the innovative approaches in science education that enhances the relevance of scientific knowledge to everyday life. One form of local wisdom that can be studied from an ethnoscientific perspective is the production of durian tempoyak in Indragiri Hilir, Riau. The fermentation process of durian tempoyak involves scientific concepts in biology and chemistry, such as microorganism activity, fermentation reactions, and changes in food's physical and chemical properties. However, research on integrating local wisdom into science education remains very limited. This study aims to analyze local wisdom in the production of durian tempoyak from a scientific perspective. Data were collected through interviews with informants selected using the snowball sampling method. Data analysis was conducted using the Miles and Huberman qualitative approach. The research findings indicate that the Malay community continues to preserve the tradition of making durian tempoyak. The production process includes preparing materials and tools, fermentation stages, and its benefits in science learning. In conclusion, exploring ethnoscience in durian tempoyak production provides an opportunity to link science with local culture, particularly in biotechnology. Integrating local wisdom into science education will enhance students’ appreciation of culture and develop 21st-century skills.
Implementation of Independent Curriculum on Chemistry Learning Outcomes Phase E at Senior High School Jaslin, Syafriffah; Yerimadesi, Yerimadesi
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8541

Abstract

This research is motivated by the Mid-Semester Summative Assessment (STS) value of chemistry phase E at State Senior High School 2 Sungai Limau of 62.60, and the correlation analysis of the implementation of the Independent Curriculum on the learning outcomes of chemistry phase E at State Senior High School 2 Sungai Limau has not been carried out. This study aims to analyze the correlation between the implementation of the Independent Curriculum and the learning outcomes of chemistry phase E at State Senior High School 2 Sungai Limau. This research is a descriptive correlational study with a mixed-method research design of the concurrent triangulation type. The research instruments used were teacher interviews, teacher teaching module reviews, teacher questionnaires, student questionnaires, and End-of-Semester Summative Assessment (SAS) documents. Data were analyzed using the Spearman Rho correlation test. The correlation coefficient value (r) obtained from the data processing results was 0.339 (positive), and the sig. value was 0.021 < 0.05, so it was in the low category. The determination coefficient value was 11.5%. Meanwhile, the other 88.5% is influenced by other variables not discussed in this study. This means that the implementation of the Independent Curriculum at State Senior High School 2 Sungai Limau has a low and significant positive correlation/relationship with the results of learning chemistry phase E. If the Independent Curriculum is implemented properly, then the results of learning chemistry can increase. The chemistry teaching modules made by teachers have begun to apply the principle of Understanding by Design (UbD). However, the chemistry teaching modules must be completed, especially in the assessment section.
Analysis of Effectiveness of Discovery Learning Model in Science Learning Activities for Basic Students Iskandar, Suhendra
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8548

Abstract

Unlike other learning models, the Discovery Learning model emphasizes theoretical and practical in-depth material exploration, ensuring no learning objectives are overlooked. This differs from other student-centred learning (SCL) models, which grant full autonomy to students. The Discovery Learning model incorporates the role of lecturers as assistants, allowing students to build a strong foundational understanding of knowledge.  This study investigates the effectiveness of the Discovery Learning model in science learning for students of the Madrasah Ibtidaiyah Teacher Education program at IAIN Sultan Amai Gorontalo. The research was conducted through four cycles, each consisting of the learning steps of stimulation, problem identification, data collection, data processing, verification, generalization, and reflection. The success of the learning activities was measured by improvements in learning outcomes, reflected in the scores of pre-tests conducted before implementing the learning model and post-tests conducted afterwards.  The hypothesis was tested using the paired-sample test to determine the significance between pre-test and post-test scores in each cycle, followed by an effectiveness test using the N-gain test. The findings confirmed the hypothesis, as all cycles showed a t-value greater than the critical t-table value, indicating increased learning outcomes through the Discovery Learning model. This was also evident in the consistent improvement in the average scores between pre-tests and post-tests in each cycle. However, based on the N-gain test, the effectiveness of the learning model was found to be only 53.35%, which falls into the category of low effectiveness. This suggests a need for additional scientific literature and laboratory equipment within the scope of IAIN Sultan Amai Gorontalo.
Bioactivity Analysis of Chalcone-Derived Compounds Based on In-Silico Molecular Docking Study Sarie, Aldila Divana; Utami, Marsah Rahmawati
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8550

Abstract

Chalcone compounds are aromatic ketones and enones that have been found to have several activities, such as antimalarial, antioxidant, anti-inflammatory, anticancer, antiviral, anti-HIV, antifungal, antihyperglycemic, and carboxygenase inhibitors. A ligand's bioactivity can be predicted through in-silico tests using molecular docking. Molecular docking studies are conducted to study the interaction between ligand and receptor and identify the receptor's active site that matches the ligand when the ligand and receptor bind in a stable complex. This study can be a preliminary test before conducting in vitro and in vivo tests. This narrative review aims to analyze information on the bioactivity of chalcone-derived compounds and their derivatives through an in silico molecular docking approach in the form of binding affinity values and amino acid residues that bind. The method used is a literature study of 13 research articles found through the Semantic Scholar and Springer Link databases. The review results showed that the new compounds derived from chalcone compounds have a good range of bioactivity, as seen from the binding affinity values, which show lower values when compared to other test ligands and referenced ligands. The functional groups that have an important role in the interaction between ligands and proteins between ligands and receptors are triazole, methoxy, amine, halogen, carbonyl, hydroxyl, and thiol groups bound to the reactive structure of the α,β unsaturated ketone aromatic ring in the structure of the chalcone compound. The compounds that show promising activity can be further investigated as new drug candidates.
Development of Nearpod Media Assisted with Songs to Improve Learning Outcomes in the Concept of Natural Science on the Material of Force Kamila, Aisyah Tasya; Sutikno, Putri Yanuarita
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8564

Abstract

The development of science makes using technology-based learning media important to create effective and interesting learning. The use of nearpod media can improve student learning outcomes. This study examines the feasibility and effectiveness of song-assisted nearpod products on force materials. The development model used in this study is ADDIE, which has five stages: Analysis, Design, Development, Implementation, and Evaluation. The subjects in the study were 28 students in grade IV of elementary school. The research instruments used were interview sheets, observation sheets, questionnaire sheets, and tests. The study results show that the near pod developed is a very feasible product, with a feasibility percentage of 95% from material experts and 94% from media experts. In addition, the results of the questionnaire responses showed a percentage of 96% of teachers and 94% of students, which indicated that the use of near pods was very feasible both in terms of attractive appearance, ease of access, features such as songs and practicum to contribute to the improvement of student learning outcomes as evidenced by the results of pretest and posttest tests. The normality test was carried out using the Shapiro-Wilk analysis technique with a pretest significance value of 0.061 and post-test data with a significance value of 0.113, which showed normal distributed data. The paired sample t-test showed an increase between the pretest and post-test results with a significant value of 0.000 < 0.05. The N-gain test of 0.7919 or 79% carried out is included in the high category. This shows an increase between pretest and posttest results. This means that developing song-assisted nearpod media effectively improves student learning outcomes. The test score results indicate a significant change in science learning outcomes, namely an increase in posttest scores after applying nearpod media in learning compared to the pretest score before the application of nearpod media.
Development of Biodegradable Materials for Consumer Product Packaging: Environmental Impact and Consumer Preferences Anggraini, Welly
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8588

Abstract

Conventional plastics significantly contribute to environmental pollution due to their non-biodegradable nature. Eco-friendly alternatives such as biodegradable materials are being developed to mitigate these negative impacts. This study employs a mixed-method approach with three main phases: (1) exploration and characterization of biodegradable materials based on polylactic acid (PLA) and corn starch; (2) environmental impact analysis using Life Cycle Assessment (LCA) to evaluate carbon footprint and energy consumption; and (3) consumer preference surveys through questionnaires and interviews in Bandar Lampung. The results indicate that biodegradable materials exhibit higher biodegradability and lower environmental impact than conventional plastics. LCA analysis demonstrates that these materials reduce carbon emissions and energy consumption. Despite challenges such as production costs and material durability, most consumers in Bandar Lampung prefer environmentally friendly packaging. This study provides insights into the potential implementation of biodegradable materials in Indonesia and their contribution to sustainable solutions in the packaging industry.
Physical and Sensory Characteristics of Guava Fruit Juice with the Addition of Cinnamon and Brown Sugar Putra, Anak Agung Ngurah Dwi Ariesta Wijaya; Sintyadewi, Putu Rima; Yoga, Wahyu Krisna; Anggaraeni, Komang Rosa Tri
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8589

Abstract

The development of healthy food has grown very rapidly. Healthy food is not expensive but food that can provide good health benefits. Making fruit juice drinks from red guava can increase public interest in consuming fruit to maintain health and food security. This study aims to test the physical and sensory properties of red guava juice with the addition of cinnamon and brown sugar. This study used a Completely Randomized Design (CRD) with six treatment combinations and one control. Red guava juice, adding cinnamon and brown sugar, has a pH value ranging from 4.73-5.82 and a viscosity value ranging from 255.4 - 365.8 cps. Adding cinnamon and brown sugar affects red guava juice's pH value and viscosity. The higher the addition of cinnamon and brown sugar, the higher the pH value and viscosity. Panellists liked sample P2 with 2% cinnamon and 6% brown sugar for sensory tests.
Improving the Quality of Gembili Pickle (Dioscorea esculenta) Through Fermentation with Starter Culture Lactobacillus plantarum B1765 Nugrainglahi, Yurita Gita Puspa; Wikandari, Prima Retno
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8590

Abstract

Gembili is a type of tuber that grows widely in Indonesia and has the potential to be developed into functional food, but its utilization has not been optimal. One of the efforts that can be made is the development of gembili as pickle, a synbiotic fermented product of gembili by a starter culture of Lactobacillus plantarum B1765, which has been known as a probiotic. This study examines the effect of fermentation duration on the growth of total lactic acid bacteria (LAB), pH value, Total Titratable Acidity (TTA), and organoleptic quality aspects.  The gembili tubers were cut into sticks and fermented for 0, 2, 4, and 6 days, using Lactobacillus plantarum B1765 starter culture at 37℃. Total LAB was calculated by total plate count (TPC), pH by pH meter, TTA by acid-base titration, and organoleptic test using untrained panellists to assess the preference level using a hedonic scale. The results showed that total LAB increased from the beginning of fermentation (2.37 x 107 CFU/mL) to 1.15 x 108 CFU/mL fermentation 4 days but decreased to 1.01 x 105 CFU/mL at the end of fermentation (6 days). The pH decreased from 6.43 ± 0.02 to 3.07 ± 0.002, and TTA increased from 0.31 ± 0.010% to 0.53 ± 0.008% at the end of fermentation (6 days). Organoleptic test results showed that fermentation time affected the preference level for color, taste, aroma, and texture. The highest preference level of the four aspects was the product with a fermentation time of 4 days with a preference level in the very like category. The results of this study indicate that the optimal time of gembili pickle fermentation is 4 days based on the total amount of LAB (> 106 CFU/mL), TTA (> 0.20%), pH (3.4-4.3) has met SNI criteria and also shows the highest preference level in color, taste, aroma, and texture. Gembili pickles can be recommended to be developed as a safe synbiotic product.
Student Response to the Implementation of E-Module-Assisted Cybergogy in Junior High School Students Ramadhani, Novitasari; Subekti, Hasan
Jurnal Pijar Mipa Vol. 20 No. 2 (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.v20i2.8602

Abstract

The low involvement of students in learning is still a challenge, one of which is influenced by the lecture method, which is still dominant in the teaching and learning process. The application of technology-based learning, such as e-module-assisted cybergoth, is expected to increase students' positive responses. This study aims to analyze students' responses to the application of e-module-assisted cybergogy in science learning. This study uses a quasi-experimental method with a one-shot case study design involving 32-grade VIII-D SMPN 1 Bagor students. Data was collected through student response questionnaires and analyzed using descriptive statistics. The results showed that implementing e-module-assisted cybergogy resulted in very positive student responses, with an average response score of 99.1%. In conclusion, this approach can increase student engagement in science learning. This research implies that educators can adopt e-module-assisted cybergogy to create more interactive and innovative learning.

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