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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.
Arjuna Subject : -
Articles 6,652 Documents
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The Effect of PjBL Model Assisted by Revit Application on Students' Building Drawing Learning Outcomes in the DPIB Department at SMK Negeri 4 Palembang Sahera Silvia Vaesar; Muhammad Giatman; Fahmi Rizal; Elfizon; Abdul Habib Arrasyidi Desky
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15181

Abstract

Building drawing instruction in vocational secondary schools (SMK) continues to face significant challenges, particularly low student learning outcomes attributed to teacher-centered approaches and suboptimal integration of industry-relevant technology. This study aims to analyze the differences in building drawing learning outcomes across cognitive, psychomotor, and affective domains between students taught using the Project Based Learning (PjBL) model assisted by Revit and those receiving conventional instruction in the DPIB department at SMK Negeri 4 Palembang. A quantitative quasi-experimental design with Non-Equivalent Control Group and pretest–posttest procedure was employed. Subjects were Grade XII DPIB students in the 2024/2025 academic year: experimental group (n = 32) and control group (n = 30). Data were collected through cognitive tests, project assessment rubrics, and attitude questionnaires, then analyzed using independent and paired sample t-tests after fulfilling normality and homogeneity requirements, with effect size measured by Cohen's d. The PjBL-Revit model was implemented at a very good level (88.89%). Cognitive outcomes differed significantly between experimental (M = 89.91) and control groups (M = 67.27), with p < 0.05 and a very large effect size (Cohen's d = 4.74). Psychomotor outcomes also differed significantly (experimental: M = 77.95 vs. control: M = 65.40), as did affective outcomes (experimental: M = 3.14/4.00 vs. control: M = 2.71/4.00). These findings confirm that PjBL assisted by Revit not only enhances technical drawing competencies but also aligns vocational training with digital construction industry standards.
Formulasi, Stabilitas, dan Uji Aktivitas Krim Tabir Surya dari Ekstrak Batang Kaktus (Opuntia Cochenillifera (L.) Mill) Menggunakan Spektrofotometer Ultraviolet-Visible. Samsuar Samsuar; Nopiayansyah Nopiayansyah; Indra Hidayatullah
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15183

Abstract

Sunlight has several health benefits, but it also has certain negative impacts. Sunscreen is a cosmetic product that protects the skin from ultraviolet rays, which can cause a number of skin health problems. Phenolic compounds, particularly flavonoids, have the potential to be used in sunscreen cosmetics. The goal of this research is to develop a sunscreen cream using the active ingredient Centong cactus stem extract (Opuntia cochenillifera (L.) Mill) and evaluate its stability and Sun Protection Factor (SPF) using a spectrophotometer. The results showed that the formulation of Centong cactus stem extract sunscreen cream met the criteria set regarding its physical and chemical properties based on the Indonesian National Standard (SNI) 2016-4399-1996. These properties include organoleptic characteristics, homogeneity, spreadability, adhesion, pH, viscosity, and stability. The sunscreen activity test resulted in an SPF rating of 7.04 ± 0.32 for the first f ormulation (FI) for extra protection, 12.02 ± 0.34 for the second formulation (FII) for maximum protection, and 18.03 ± 0.31 for the third formulation (FIII) for ultra protection. The results of this initial study indicate that Centong cactus stem extract sunscreen cream has good stability and ultra-sun protection factor FIII (15%) activity, which is very good for further research.
Eaton Exponent Sensitivity in Sonic and Resistivity Log-Based Pore Pressure Prediction: Supporting Sustainable Energy Exploration in South Sembakung Field, Indonesia Lucky Rinaldy; Abdul Haris
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15205

Abstract

Accurate pore pressure prediction is critical for safe drilling operations during early exploration when direct measurements are limited. The Eaton method is widely applied, yet the exponent (n) is treated as a fixed constant without sensitivity evaluation under normal pore pressure regimes. This study quantifies the effect of exponent variation using sonic and resistivity logs from Well X, South Sembakung Field, Tarakan Basin. Normal Compaction Trends (NCTs) were constructed from shale intervals (GR ≥ 75 API). NCT quality differs substantially between log types with R² = 0.79 for sonic versus R² = 0.076 for resistivity, causing residual deviations amplified nonlinearly by n, making exponent selection consequential even under normal pressure. Systematic variation (n = 2.50–3.50 for sonic; n = 1.00–2.00 for resistivity) was validated against three DST measurements using Mean Absolute Error (MAE). Sonic predictions yielded MAE of 309.89–402.40 psi, outperforming resistivity predictions (584.50–995.85 psi), reflecting superior NCT stability. Resistivity errors reflect petrophysical heterogeneity including formation water salinity and clay mineral content. Lower n values mechanically converge predictions toward the hydrostatic baseline as a mathematical consequence of the Eaton formulation. The Eaton exponent must therefore be treated as a site-specific calibration parameter, not a universal constant.
Development of PBL-Based E-Modules to Enhance Numerical Problem-Solving Skills among Vocational High School Students Eky Putri Prasanti; Ahmad Fauzan; Yerizon; Yarman
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15240

Abstract

This study developed a Problem-Based Learning (PBL)-based e-module to enhance Numerical problem-solving skills among Grade X vocational high school students. Using the Plomp research and development model, the product underwent preliminary research, prototyping, and assessment phases, evaluated for validity, practicality, and effectiveness. Results indicated the e-module achieved a validity score of 3.36 (valid category) and the accompanying student worksheet scored 3.68 (very valid). Practicality assessments from students and teachers averaged 80.00%, confirming usability and accessibility via smartphones. Effectiveness testing demonstrated 76% average achievement in Numerical problem-solving, with 79.16% of students reaching minimum competency thresholds. Students showed notable improvement in problem comprehension and strategic planning, though reflective verification required further instructional scaffolding. The findings confirm that the PBL-based e-module meets established quality criteria and offers a replicable, curriculum-aligned framework for fostering active, student-centered Numericals learning in vocational education contexts.
Enhancing Students’ Geometric Reasoning through Rumah Gadang Ethnomathematics: A Local Instructional Theory Based on Realistic Numerical Ainil Mardhiah; Armiati; Yerizon; I Made Arnawa
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15242

Abstract

This study developed a Local Instructional Theory (LIT) on geometric transformation based on Realistic Mathematics Education (RME) integrated with ethnomathematics of Rumah Gadang Minangkabau to enhance students' mathematical problem-solving ability. Using design research combining Plomp's development model and Gravemeijer and Cobb's framework, the research produced a Hypothetical Learning Trajectory, teacher's guide, and student workbook. Validation by experts showed very high validity scores: HLT (3.53), teacher's book (3.45), and student's book (3.49). Practicality testing revealed very practical ratings: teacher's book (92.50%) and student's book (83.97%). Effectiveness was demonstrated through post-test results, with 71.88% of students achieving mastery criteria and significant improvement across all problem-solving indicators. The findings indicate that integrating cultural contexts through ethnomathematics within an RME framework effectively supports students' conceptual understanding and problem-solving skills in geometric transformation. This LIT provides a culturally responsive instructional model that bridges abstract mathematical concepts with students' lived cultural experiences.
Effect of Additive Ingredients in Papaya Leaf-Based Botanical Pesticides on the Vegetative Growth of Water Spinach (Ipomoea reptans Poir) Nurul Chairiyah; Ipun; Dwi Santoso; Nur Indah Mansyur; Nurmaisah; Muh Adiwena; Muttaqien
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15262

Abstract

This study evaluated the effect of additives in papaya leaf–based botanical pesticides on the vegetative growth of water spinach (Ipomoea reptans Poir). The experiment was arranged using a Randomized Complete Block Design (RCBD) with five treatments and five replications: P0 (control), P1 (papaya leaves), P2 (papaya leaves + garlic), P3 (papaya leaves + lemongrass), and P4 (papaya leaves + soursop leaves). Observed parameters included plant height, root length, number of leaves, and fresh weight. Data were analyzed using analysis of variance (ANOVA), Duncan’s Multiple Range Test (DMRT) at 5%, correlation, and multiple linear regression analyses. The treatments significantly affected most growth parameters. P3 (papaya leaves + lemongrass) produced the best performance, with plant height of 24.35 cm, root length of 22.58 cm, approximately 18 leaves, and fresh weight of 14 g. Correlation analysis showed strong positive relationships between plant height and number of leaves (r = 0.890), and between root length and fresh weight (r = 0.764). Regression analysis identified number of leaves as the strongest predictor of fresh weight (β = 1.015), followed by root length (β = 0.528), whereas plant height showed a negative effect (β = −0.891). Overall, the addition of lemongrass to papaya leaf–based botanical pesticides enhanced vegetative growth and biomass accumulation in water spinach plants.
Development of an Electronic Job Sheet for Forward-Reverse Circuits in The Electrical Installation Technology Program Mega Risna; Sukardi; Arwizet K; Elfizon; Abdul Habib Arrasyidi Desky
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15267

Abstract

The practicum learning process in vocational education requires instructional media that support students in understanding work procedures systematically and independently. However, the printed jobsheets used in forward-reverse circuit learning still have limitations in visualization and interactivity. This study aims to develop an electronic jobsheet (e-jobsheet) for forward-reverse circuit materials and determine its validity, practicality, and effectiveness. The research employed the Research and Development (R&D) method using the Instructional Development Institute (IDI) model, consisting of three stages: define, develop, and evaluate. The participants included expert validators, subject teachers, and 30 eleventh-grade students in the Electrical Power Installation Engineering program. Data were collected through observations, interviews, questionnaires, and learning outcome tests. The findings revealed that the developed e-jobsheet achieved material validity of 75% (valid), media validity of 85.93% (very valid), and language validity of 94.65% (very valid). The practicality test showed a score of 91.67% (very practical). In addition, the effectiveness test indicated an improvement in student learning outcomes, with the average pretest score increasing from 55 to 88.1 in the posttest and producing an N-gain score of 0.78 in the high category. Therefore, the developed e-jobsheet is considered valid, practical, and effective for supporting digital-based and student-centered practicum learning in forward-reverse circuit materials.
An Ecosystem Services Approach in Valuing Contribution of Agrosilvopasture to Household’s Income in Rural Area Central Kalimantan Afentina; Yanarita; Tri Minarni; Yuliana
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15320

Abstract

Agroforestry is a sustainable land use system that provide wide range of ecosystem services, recommending solutions for biodiversity conservation, rural livelihood, and climate change adaptation. To be able to compete with large-scale monoculture plantations such as oil palm plantations, traditional agroforestry is required to provide better economic benefits to farmers. This research aimed to provide empirical evidence of role of agrosilvopature to rural livelihood by assessing provisioning services and economic contribution to household income. The Data collected from field observation included species component of agrosilvopasture, utilization, and economic value using market approach. The Analysis employed descriptive statistics. The research found three types of agrosilvopasture based on the livestock species:  pig-based agrosilvopasture, goat-based agrosilvopasture and chicken-based agrosilvopasture. Agrosilvopasture provide various provisioning services including food, cooking spice, construction material, medicine, fodder and fertilizer. Income from agrosilvopasture provides a significant contribution to total farmer income, varying from 59% to 65%.  In addition, agrosilvopasture assured sustainable income by providing weekly income, monthly oncome and long-term income. The study concluded that agrosilvopasture provide a variety of products to meet farmers' needs and a sustainable source of income. Studying agrosilvopasture components and how they contribute economically is important to increase adoptability and provide recommendations for decision-makers in developing strategies for rural development and ecological conservation.
Isolation, Characterization, and Antioxidant Activity of Phosvitin from Duck Egg Yolk Muhammad Hipzul Mursyid; Sulaiman N. Depamede; Made Sriasih
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i5.15321

Abstract

Phosvitin is a highly phosphorylated protein found in egg yolk and is known for its strong metal-binding capacity and antioxidant activity. This study aimed to isolate and characterize phosvitin from duck egg yolk (Anas platyrhynchos domesticus) and evaluate its antioxidant potential. Phosvitin was isolated using a modified extraction method and characterized using one-dimensional gel electrophoresis (SDS-PAGE) and Fourier Transform Infrared (FTIR) spectroscopy. Antioxidant activity was determined using the DPPH radical scavenging assay. The results showed that phosvitin was successfully isolated, indicated by a dominant protein band at approximately 50 kDa. The antioxidant activity exhibited a strong inhibitory effect with an IC50 value of 33.65 ppm, indicating very strong antioxidant activity. FTIR analysis confirmed the presence of characteristic functional groups, including amide and phosphate groups, which are typical of phosphoproteins. These findings suggest that phosvitin from duck egg yolk may be a promising natural antioxidant for food and pharmaceutical applications.
Building Farmer Loyalty Through Marketing Mix and Brand Image of Tomato Seeds: The Mediating Role of Satisfaction Using PLS-SEM Approach Muhammad Khoirudin; Mimin Aminah; Irni Rahmayani Johan
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15346

Abstract

Seed manufacturers face market share erosion due to fragmented execution. While prior studies partially evaluate inputs, integrated 7Ps and brand image frameworks remain scarce. This study evaluates structural relationships and satisfaction’s mediating role in the hybrid vegetable seed sector. Data were gathered from 171 tomato smallholders across 14 sub-districts in Cianjur Regency via a purposive sampling technique and analyzed using PLS-SEM. The model revealed that farmer satisfaction was strongly explained (R2 = 0.599), where brand image had the most dominant direct effect (β= 0.60, p < 0.00), followed by the marketing mix (β= 0.330, p< 0.00). Conversely, loyalty registered low variance (R2 = 0.15). Bootstrapping confirmed that satisfaction directly drove loyalty (β= 0.24, p=0.00). The core novelty lies in integrating high-dimensional 7Ps with an empirical screening filter for multi-brand retention. Mechanistically, satisfaction fully mediates the marketing mix (βindirect= 0.08, p= 0.01) and partially mediates brand image (βindirect)=0.15, p=0.00). Managerially, firms must shift from mass-branding to localized high-touch agronomic support to secure loyalty.  

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