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Jurnal Penelitian Pendidikan IPA (JPPIPA)
Published by Universitas Mataram
ISSN : 24602582     EISSN : 2407795X     DOI : -
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics
Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching in the field of science. The Science Educational Research Journal is published twice in a year in January and July editions. The editors receive writing in Indonesian or English, either from the university or from outside the university.
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Articles 6,882 Documents
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Physical and Chemical Characteristics of Soil in the Habitat of Gymnostoma rumphianum (Miq.) L.A.S. Johnson in Tojo Una-Una Regency, Central Sulawesi Rahmawati; Yusran; Zulkaidhah; Retno Wulandari; Rukmi; Ramadanil Pitopang
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15120

Abstract

Sulawesi, particularly the Wallacea region, has a unique yet extreme ultramafic ecosystem for vegetation growth due to nutrient limitations and high heavy metal concentrations. This study aims to analyze the characteristics of the physical and chemical properties of the soil in the habitat of Gymnostoma rumphianum (Miq.) L.A.S. Johnson in Tojo Una-Una Regency, Central Sulawesi. The study was conducted in Betaua and Podi Villages by dividing the locations based on distance from the river flow. Physical parameters analyzed included bulk density, soil texture, and permeability, while chemical parameters included N, P, K, pH, organic C, C/N ratio, and electrical conductivity (DHL). The results showed that the soil texture in Betaua Village was dominated by sand fractions, while Podi Village was dominated by silt fractions due to the influence of river sedimentation. Chemically, the soil is alkaline (pH 8.05–8.28) with low to very low nitrogen and phosphorus content, but has moderate potassium availability. The presence of G. rumphianum, an actinorhizal plant capable of fixing nitrogen, is a key factor in the adaptation and sustainability of vegetation in this marginal land. This study concludes that despite extreme edaphic constraints, soil-plant interactions and local environmental dynamics such as fluviality significantly determine the structure of the ultramafic habitat in the region.
Optimizing Sustainable Wastewater Treatment: Kinetic and Parametric Study of Methylene Blue Removal Using Electrocoagulation Amir Husin; Dermala Tito A; Fadhila Fadhila; Lies Setyowati; Deny Supriharti
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15127

Abstract

This study investigates the removal of Methylene Blue (MB) from synthetic wastewater using a batch electrocoagulation (EC) reactor with two pairs of parallel monopolar iron electrodes, directly supporting Sustainable Development Goal 6 (Clean Water and Sanitation). Operational parameters, including initial pH, inter-electrode distance, applied voltage, and electrolysis time, were systematically evaluated. Within 15 minutes of electrolysis, a color removal efficiency of over 80% was achieved at an applied voltage of 10 V and an inter-electrode distance of 5 mm. Treatment efficiency decreased to 60.13% when the inter-electrode distance was widened to 10 mm due to increased cell resistance. Conversely, increasing the voltage from 10 V to 20 V and 30 V significantly enhanced the process efficiency. The MB removal rate was validated using a mass transfer-based kinetic model solved via the 4th-order Runge-Kutta method. The model aligned well with experimental data, displaying a Sum of Squared Errors (SSE) range of 0.09 to 193.57. At an extended electrolysis time of 75 minutes, the average efficiency reached 92.04% across all voltage variations, proving that coagulant saturation overcomes mass transfer limitations.
Development of Canva-Based Digital Physics Worksheets on Motion to Enhance Students' Scientific Literacy Eni Sumanti Nasution; Sri Utami Kholilla Mora Siregar; Kasmawati; Randy Sanjaya; Ferawati Artauli Hasibuan
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15128

Abstract

This study aimed to develop and evaluate a Canva-based Digital Student Worksheet (LKPD) on motion concepts to improve students’ scientific literacy. The research employed a Research and Development (R&D) approach using the ADDIE model, consisting of Analysis, Design, Development, Implementation, and Evaluation phases. Product feasibility was assessed through expert validation, while effectiveness was evaluated through limited field trials (n = 10) and large field trials (n = 20) conducted during the implementation phase. Scientific literacy was measured using PISA-based test items covering the dimensions of scientific content, context, and competency. The developed LKPD achieved a validity score of 93.8% (very valid). Practicality scores reached 94.0% from teachers and ranged from 90.5% to 94.5% from students, indicating a very practical category. The effectiveness evaluation revealed substantial improvements in students’ scientific literacy, with the greatest gains observed in the scientific competency dimension, particularly in explaining scientific phenomena and interpreting data related to motion concepts. N-Gain scores reached 0.71 in the limited field trial and 0.75 in the large field trial, both categorized as high. These findings indicate that the Canva-based digital LKPD is valid, practical, and effective for supporting interactive physics learning and enhancing students’ scientific literacy in secondary education.
The Effects of Tourist Activities on Bird Species Diversity in the Tambing Lake Area, Lore Lindu National Park, Central Sulawesi, Indonesia Sustri; Sri Ningsih; Naharuddin; Rukmi; Alam Ansary
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15129

Abstract

The increase in tourism activity in the Lake Tambing area has the potential to put pressure on the ecosystem, especially on wildlife that is sensitive to human disturbance. Lake Tambing located in Lore Lindu National Park, Central Sulawesi, is an area of ​​high ecological value and home to a variety of endemic flora and fauna. This study aimed to analyze the potential of fauna, particularly bird populations, as indicators of ecological conditions and to observe the impact of tourism activities on bird diversity. The study was conducted from February to June 2025 at the camping ground and on the trackings trail using the line transect method. Data analysis included the Shannon-Wiener diversity index, evenness index, dominance index, and t-tests for comparisons between habitats. The study identified 56 bird species from 30 families, of which 26 are endemic to Sulawesi. Diversity index values ​​ranged from 2.79 to 3.28, indicating moderate to high levels of diversity. Statistical tests showed that tourist activity had no significant impact on bird diversity in either habitat type. This indicates that anthropogenic disturbance at Lake Tambing remains at a low level. These findings provide an important scientific basis for sustainable tourism practices, standardization of birdwatching site design, and effective endemic species conservation efforts in the Lake Tambing area.
Synergistic Effect of Amino Acids and NPK on Growth Dynamics, Yield Components, and Grain Productivity of Inpari 32 Rice Variety (Oryza sativa L) Tita Kartika Dewi; Wirja; Chalvyn Silasa Pakidi; Ida Marina; Mukhlis
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15131

Abstract

Rice productivity improvement is essential to support food security and sustainable agricultural development. This study aimed to evaluate the synergistic effects of amino acids and NPK fertilizer on growth dynamics, yield components, and grain productivity of the Inpari 32 rice variety (Oryza sativa L.). The experiment was conducted in Sukatani Village, Subang Regency, Indonesia, from July to October 2025 using a Randomized Block Design with nine treatment combinations consisting of three amino acid concentrations (5, 10, and 15 mL L⁻¹) and three NPK fertilizer doses (50, 100, and 150 kg ha⁻¹), replicated three times. Observed parameters included plant height, tiller number, leaf area index, productive tillers, panicle number, filled grains per panicle, 1000-grain weight, harvest dry grain yield, and milled dry grain yield. The results showed that the combination of 10 mL L⁻¹ amino acids and 100 kg ha⁻¹ NPK fertilizer produced the highest plant height (74.42 cm), tiller number (26.20 tillers), productive tillers (19.37), filled grains per panicle (126.57 grains), 1000-grain weight (26.50 g), and milled dry grain yield (7.93 kg plot⁻¹). The synergistic interaction between amino acids and NPK improved nutrient uptake efficiency and physiological performance, resulting in higher grain productivity. Therefore, the combined application of amino acids and NPK fertilizer can be recommended as an effective strategy for sustainable rice production.
Integration of Local Wisdom in the Formulation of Kombucha Shampoo from Job's Tears (Coix lacryma-jobi L.) Leaves as an Anti-Dandruff Agent against Pathogenic Fungi of the Scalp Tri Saptari Haryani; Yugga Tri Surahman; Firman Rezaldi; Erni Suminar; Syariful Mubarok
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15145

Abstract

Dandruff is a common scalp disorder primarily associated with the activity of lipophilic fungi of the genus Malassezia, which can cause irritation, itching, and decreased quality of life. The widespread use of chemical-based anti-dandruff agents such as ketoconazole and zinc pyrithione may lead to side effects, including skin irritation, microbial resistance, and disruption of the scalp microbiota. Therefore, the development of safer and more sustainable natural alternatives is urgently needed. This study aims to explore the formulation of a natural anti-dandruff shampoo based on kombucha-fermented hanjeli leaves (Coix lacryma-jobi L.) by integrating local wisdom and modern biotechnology approaches. Kombucha fermentation produces various bioactive compounds, including organic acids, enzymes, and phenolic substances, which exhibit antifungal activity against Malassezia spp. Meanwhile, hanjeli leaves contain flavonoids, phenolics, and polysaccharides with antioxidant and antimicrobial potential. The combination of these two components is expected to enhance antifungal efficacy while maintaining scalp health. This study highlights the potential of kombucha-based hanjeli leaf shampoo as a natural, effective, and sustainable anti-dandruff product, contributing to the development of locally sourced pharmaceutical and cosmetic innovations
Bahasa Inggris Bahasa Inggris Shevananda Arifianto; Ussy Andawayanti; Sumiadi
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15149

Abstract

Urban flooding is influenced by land use change, rainfall characteristics, river conveyance capacity, and downstream tidal conditions. This study evaluates the effect of land use conditions on hydrological response, flood inundation, and structural flood control performance using hydrological analysis and HEC-RAS modeling. The 2025 observed land use condition was classified using Landsat 9 imagery and supervised classification, while the 2031 scenario was based on the Semarang City Spatial Plan 2011–2031. The classification produced an overall accuracy of 85.42% with a Kappa coefficient of 0.83. The runoff coefficient increased from 0.41 in 2025 to 0.46 in 2031. The Nakayasu Synthetic Unit Hydrograph method estimated that the 25-year design flood discharge increased from 111.52 m³/s to 139.09 m³/s. HEC-RAS 1D/2D coupled unsteady flow simulation under the HWL condition showed that inundation increased from 12.21 ha to 17.24 ha. River normalization and levee construction improved channel conveyance capacity and reduced overflow potential in critical segments. These results indicate that integrating land use control and structural flood mitigation can support sustainable urban flood management.
STEM-PBL Instructional Materials to Support Quality Education through Chemical Literacy in Thermochemistry Dwy Puspita Sari; Mutiara Agustina Nst; Ani Sutiani; Ratu Evina Dibyantini; Alfira Julian Pratiwi
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15152

Abstract

The purpose of this study was to evaluate the effectiveness of STEM-Problem Based Learning (STEM-PBL) instructional materials in improving students’ chemical literacy on thermochemistry topics. This study employed a quasi-experimental method using a pretest-posttest control group design. The participants were 56 Chemistry Education students divided into an experimental class and a control class, each consisting of 28 students. Data were collected using a validated and reliable essay test (Cronbach’s α = 0.85). The results showed that the experimental class improved from 36.11 to 88.50, while the control class improved from 31.50 to 78.43. An independent samples t-test revealed a significant difference between the two groups (p < 0.05). In addition, the effect size analysis yielded a Cohen’s d value of 1.16, indicating a large effect. These findings suggest that STEM-PBL instructional materials effectively improve students’ chemical literacy, particularly in conceptual understanding, critical thinking, and problem-solving related to thermochemistry. In conclusion, STEM-PBL instructional materials are effective and feasible for enhancing chemical literacy and supporting quality, contextual, and 21st-century-oriented chemistry learning at the university level.
Analysis of the Suitability of Quick-Type Hand Tractors and Power Requirements for Wetland Cultivation in Lima Puluh Kota Regency, West Sumatra Province Zulnadi; Irwan A; Sri Lismawati
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15153

Abstract

In Lima Puluh Kota Regency, there are many models and types of hand tractors used by farmers to cultivate rice fields. However, it is necessary to identify which models and types of hand tractors are most suitable for use on agricultural land. The aim of this study was to determine the suitability of the hand tractors used, covering the technological (technoware), user (humanware), management (organoware) and information delivery (infoware) aspects. This study was conducted in 11 sub-districts in Lima Puluh Kota Regency. The research locations were selected using a purposive sampling method. The equipment used in this study comprised Quick-type hand tractors fitted with Kama (4.5 hp), Ratna (6.5 hp) and Yanmar (8.5 hp) engines. The first stage of data collection involved conducting a survey of relevant agencies. The second stage was a field survey. The third stage involved direct performance testing carried out under various rice field conditions. Each sub-district was represented by two farmers’ groups owning Quick hand tractors with three types of engines: Kama, Ratna and Yanmar. The research results showed that the highest working capacity for rice field cultivation using a rotary plough was found in Payakumbuh sub-district with the Yanmar hand-operated tractor, at 0.075 ha/hour. Meanwhile, the lowest effective working capacity was found in Koto Tinggi sub-district with the Kama hand-operated tractor, at 0.022 ha/hour.
Pengembangan E-LKPD Berbasis Deep Learning pada Pembelajaran Fisika untuk Meningkatkan Keterampilan Berpikir Kritis dan Berpikir Kreatif Peserta Didik SMA Linda Khoiro; Yohandri; Fatni Mufit; Emiliannur
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15156

Abstract

The low critical and creative thinking skills of eleventh grade students at SMAN 1 Lembah Melintang on mechanical wave material, reaching only 38.20% and 47.10% respectively, indicate an urgent need for innovative teaching materials. This study aims to develop a Deep Learning-based Electronic Student Worksheet (E-LKPD) assisted by Heyzine on Mechanical Wave material to improve critical and creative thinking skills of high school students. The research used Research and Development (R&D) method with the Plomp model encompassing three phases: preliminary research, prototyping phase, and assessment phase. The E-LKPD integrates three pillars of Deep Learning: Meaningful Learning, Joyful Learning, and Mindful Learning. The results show that the developed E-LKPD: (1) was declared very valid with an average Aiken V value of 0.87; (2) was declared very practical with a score of 88.54% according to teachers and 84.32% according to students; and (3) proved very effective in improving critical thinking skills from 38.20% to 80.93% and creative thinking from 47.10% to 81.90%, with N-Gain values of 0.691 (medium) and 0.658 (medium) respectively. This Deep Learning-based E-LKPD is suitable as an innovative alternative teaching material in high school physics learning aligned with the demands of the Merdeka Curriculum.

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