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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 1,266 Documents
 121   122   123   124   125 
Development of an E-Worksheet Based on Problem-Based Learning to Improve Concept Understanding Azzahra, Linda Yudha; Andriani, Aldina Eka
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11683

Abstract

Science learning in elementary schools still faces challenges in the form of low student conceptual understanding, caused by the lack of digital interactive student worksheets that can facilitate concept visualization and encourage active student involvement in the learning process. This study aimed to design, validate, and examine the effectiveness of E-Worksheet based on Problem-Based Learning to improve sixth-grade students’ understanding of Earth’s rotation and revolution at SDN Kalibanteng Kidul 03, Semarang City. This research employed a Research & Development (R&D) approach using the ADDIE model, comprising analysis, design, development, implementation, and evaluation. The participants were 22 sixth-grade students. Data were collected through interviews, observations, questionnaires, documentation, and pretest–posttest instruments. Data analysis included normality testing, the Wilcoxon Signed Rank Test, and the N-Gain test. The E-Worksheet was developed using Canva, delivered through the Liveworksheet platform, and integrated with Solar System Scope as a virtual laboratory to enhance visualization. E-Worksheet-based Problem-Based Learning consists of a cover page, identity, general information, learning activities, learning activities arranged in stages based on aspects of conceptual understanding and in line with PBL syntax, and developer profiles. Validation results from material and media experts reached 93%, indicating a very feasible category. The Wilcoxon Signed Rank Test showed a significant difference between pretest and posttest scores (Asymp. Sig. = 0.046 < 0.05). The N-Gain score of 0.30 indicates a moderate improvement in students’ conceptual understanding. These findings demonstrate that the E-Worksheet based on Problem-Based Learning is successfully developed, feasible, and moderately effective in improving students’ understanding of Earth’s rotation and revolution. This study contributes a systematic worksheet that integrates PBL syntax with digital simulations and explicit conceptual understanding, serving as a model for developing interactive problem-based digital science materials and as a reference for other science subjects.
Effect of Conceptual Scaffolding in the E-Recitation Program on Students Conceptual Understanding Wendra, Fartin; Nehru, Nehru; Riantoni, Cicyn
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11686

Abstract

Conceptual understanding is a fundamental aspect of physics learning because each concept is interrelated and becomes the basis for mastering subsequent materials. However, students often experience misconceptions that lead to low conceptual mastery. This study aims to analyze the effect of conceptual scaffolding in the E-Recitation program on students' conceptual understanding of temperature and heat. This study uses a quantitative, experimental approach with a One-Group Pretest-Posttest Design, which involves a single group without a control group. The research subjects were 29 grade XI Science students. The research procedure consisted of three main stages: administering a pretest to measure students' initial abilities, providing treatment by implementing conceptual scaffolding in the E-Recitation program, and administering a posttest to measure changes in conceptual understanding after treatment. The instrument used was a conceptual understanding test comprising 20 multiple-choice questions, validated by experts. The data were analyzed using the Shapiro-Wilk normality test followed by a paired sample t-test to test the hypothesis, as well as to calculate the effect size. The average pretest score of 55.00 increased to 77.24 in the posttest. The analysis results indicate that the data are normally distributed, and the paired-samples t-test is significant (p = 0.000 < 0.05), indicating a significant difference between the pretest and posttest results. In addition, the effect size of 2.07 falls in the very large category. The novelty of this study lies in the direct application of conceptual scaffolding to each answer choice through guiding questions and conceptual feedback videos in the E-Recitation system. Thus, it can be concluded that the application of conceptual scaffolding in the E-Recitation program has a very significant effect on improving students' conceptual understanding of temperature and heat.
Implementation of Contextual Discovery Learning Model to Improve Scientific Literacy Ullum, Iva Tien Nur Hidayatul; Martini, Martini
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11689

Abstract

Scientific literacy is an essential 21st-century competency that enables students to explain scientific phenomena, design investigations, and interpret evidence-based data. This study aims to analyze the improvement of students' scientific literacy through the application of the Discovery Learning model with a contextual approach to human respiration material. The learning context is developed through a comparative analysis of air pollution data from urban and rural areas, enabling students to examine the relationship between air quality and respiratory system disorders in a real and relevant manner. This study used a quantitative method with a one-group pretest-posttest design. The subjects were 31 eighth-grade students of SMP Negeri 1 Selorejo. The instruments used included a scientific literacy test (pretest and posttest), an observation sheet for learning implementation, and a student response questionnaire. Data analysis was carried out in stages, beginning with a normality test to determine data distribution. Because the data were not normally distributed, hypothesis testing was continued using the non-parametric Wilcoxon test. The magnitude of the increase was calculated through the N-Gain value. The results showed a significant increase in scientific literacy, as indicated by the Wilcoxon test, with an N-Gain of 0.70, which falls within the moderate category. These findings demonstrate that integrating Discovery Learning with a contextual approach grounded in urban and rural air pollution data effectively facilitates students' connections between respiratory system concepts and real-world environmental issues. Thus, this learning model contributes to strengthening scientific literacy competencies in a more meaningful and contextual way.
Integration of the Kungkum Sinden Tradition in Sendang Made for the Development of a Critical Thinking E-book Wulandari, Wiwik; Purnomo, Aris Rudi
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11694

Abstract

This research focuses on developing an integrated e-book that incorporates the local wisdom of the Kungkum Sinden tradition in Sendang Made into ecosystem learning to enhance junior high school students’ critical thinking skills. The research addresses the limited availability of contextual teaching materials and the need for digital resources that support 21st-century learning, particularly critical thinking and technology integration. A Research and Development (R&D) method was employed using the ADDIE framework, consisting of analysis, design, development, implementation, and evaluation stages. Data were collected through expert validation involving science education lecturers and a science teacher, as well as readability testing. The e-book achieved high validation scores: 3.18 for presentation (valid), 3.32 for content feasibility (very valid), and 3.41 for language appropriateness (very valid), with an overall validity of 83% and a rating of very valid. The product integrates ecosystem concepts with local ecological values and interactive features designed to train interpretation, analysis, inference, evaluation, explanation, and self-regulation skills. In conclusion, the developed e-book is highly feasible and valid for supporting contextual science learning and improving students’ critical thinking skills.
Effect of Problem-Based Learning on the Student Problem-Solving Skills Utami, Nurvita Putri; Wulandari, Fitria
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.9405

Abstract

Science learning in elementary schools is expected to not only provide conceptual understanding but also foster students' ability to solve real-life problems through active learning. This study was conducted to measure the effect of Problem-Based Learning on the problem-solving ability of fifth-grade students of SDN Krembung 1 in learning science on the human respiratory system. The One Group Pretest-Posttest research design was used to test the instrument's validity and reliability, assess the normality and homogeneity of the pretest and posttest results, and determine the influence using the T Test. The instrument developed by the researcher was based on the problem-solving indicators developed by George Polya: (1) Understanding the problem, (2) Planning Problem Solving, (3) Implementing the problem-solving plan, and (4) Checking the Process and Results of problem solving. Problem-Based Learning is applied through five stages, namely: (1) Orientation to the problem, (2) organising students, (3) guiding the investigation, (4) developing and presenting results, and (5) analysing and evaluating the problem-solving process. The pretest was carried out first, followed by the application of the problem-based learning model, and then the posttest. The average pretest score was 79 (68–89), and the average posttest score was 90 (75–100). The results of the paired sample t-test analysis showed a significance value (2-tailed) of 0.000, which means there is a significant difference between the pretest and posttest results. These findings suggest that integrating Problem-Based Learning into classroom instruction not only enhances students’ problem-solving abilities but also aligns well with the goals of competency-based curricula such as the Merdeka Curriculum, which emphasize active learning and critical thinking. Thus, Problem-Based Learning is effective in improving students' problem-solving abilities.
Halal Science Authentication and Functional Characterization of Local Lampung Tuber Polysaccharides as Emulsifier Substitution in the Food Industry Anggraini, Welly
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11526

Abstract

As the 2026 deadline for mandatory halal certification in Indonesia approaches, concerns regarding the halal status of imported emulsifiers, particularly E471 (mono- and diglycerides of fatty acids), remain a significant issue. The primary problem lies in halal critical points that are extremely difficult to trace: these materials may be derived from hydrolysed animal fats (bovine or porcine), not slaughtered according to Islamic law. This research aims to explore the functional properties of polysaccharides from local Lampung tubers, namely Porang and Gembili, as authenticated halal emulsifier substitutes. The study employed a Factorial Completely Randomized Design (CRD), testing tuber sources and concentration levels of 1%, 3%, and 5%. Polysaccharides were extracted via freeze-drying and subsequently characterized using physicochemical analysis and FTIR spectroscopy. Based on the results, 3% Porang polysaccharide produced a low Creaming Index (CI) of 3.1 ± 0.3% after 14 days and a high viscosity of 45,200 cP. Statistically, this stability did not differ significantly (p > 0.05) from the commercial E471 standard in its capacity to form an effective interfacial layer that prevents coalescence. The material was authenticated by the absence of a carbonyl absorption peak at 1745 cm⁻¹ in its FTIR spectrum, as part of a molecular halal authentication assessment. This provides scientific proof that the isolates are not contaminated by animal fats or questionable substances. This study concludes that Porang glucomannan and Gembili mucilage are strategic "Halal-by-Design" alternatives that can support national food industry independence and assist business actors, particularly MSMEs, in meeting the mandatory halal certification by 2026.
DNA and Protein-Based Methods for Halal Gelatin Authentication: A Review Azizah, Nurul; Anggraini, Welly
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11539

Abstract

Tracing and tracking halal has emerged as an imperative for Muslim consumers worldwide to ensure that the meat-based products comply with Islamic law and food safety standards. The most challenging technical issue in halal authentication concerns products derived from gelatin. Because extreme manufacturing processes, such as high-temperature and chemical processing, damage the physical and molecular architecture of raw materials, detection is difficult. Objective: This study builds on a systematic literature review with a PRISMA protocol to map DNA- and protein-based detection techniques and compare their efficiencies. Methods: A systematic search was conducted across major databases, including Google Scholar, ScienceDirect, and ResearchGate, for peer-reviewed articles published from 2015 to 2025. From this process, 25 studies with high-impact potential were selected for thematic analysis. The results show that DNA-based methods dominate the literature (80%). Despite this, quantitative PCR (qPCR) remains the "gold standard" owing to its specificity and sensitivity. However, the findings reveal that droplet digital PCR (ddPCR) can detect highly degraded DNA in complex matrices, whereas traditional methods have shown limitations for detecting DNA in pharmaceutical capsules and cosmetics. On the other hand, protein-based methods such as ELISA remain useful for fast, economical screening, but sensitivity is substantially reduced at higher processing temperatures. In conclusion, this study highlights the importance of combining IPC and multi-method frameworks to limit false negatives. The findings of this study are substantial enough to provide the fundamentals for the alternative scaling-up of halal assurance systems, especially in the form of guidelines that provide a scientific framework for strengthening a more reliable authentication system for processed gelatin products, at least within Indonesia.
Effect of Guided Inquiry Learning Model on Students Creative Thinking Skills in the Classification of Living Things Material Saragih, Hanna Turena; Simatupang, Halim; Pohan, Muflihani
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11642

Abstract

21st-century skills include several important components, including creative thinking. One skill that needs to be developed through the learning process in schools is creative thinking, as it helps students find solutions to problems and independently construct conceptual understanding. This study aims to determine the effect of the guided inquiry learning model on students’ creative thinking ability in the topic of classification of living organisms. This research is a quantitative study using a quasi-experimental design with a nonequivalent control group. The study population consisted of all seventh-grade students at SMP Negeri 17 Medan. The research sample was selected using a cluster sampling technique and consisted of two classes: class VII-7, the experimental class taught using the guided inquiry learning model, and class VII-9, the control class taught using direct instruction. The research instrument used was a test of creative thinking ability. The data were analyzed by testing the hypothesis using an Independent Samples t-test and normalized gain (N-Gain) analysis. The study's results indicate that the guided inquiry learning model affects students’ creative thinking abilities. The experimental class obtained an average posttest score of 81.56 with an N-Gain value of 63.92, which falls into the quite effective category, while the control class obtained an average posttest score of 69.38 with an N-Gain value of 44.28, which falls into the quite effective category. These results indicate that students’ creative thinking ability, when taught using the guided inquiry learning model, is better than that of students taught using conventional learning methods.
Development of Live Worksheets Based on Problem-Based Learning to Improve Science Critical Thinking Skills Sari, Fitri Kartika; Andriani, Aldina Eka
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11695

Abstract

Optimizing the use of student worksheets in science learning is a strategic effort to improve the quality of the learning process and foster students' critical thinking skills. This study aims to describe the design, determine the feasibility, and examine the effectiveness of Live Worksheets based on Problem Based Learning in improving the critical thinking skills of fifth-grade students at SD Negeri Jatibarang 03 on the topic of the human respiratory system in improving the critical thinking skills of fifth-grade students at SD Negeri Jatibarang 03 on the topic of the human respiratory system. This research employed a Research & Development (R&D) method using the ADDIE development model, which consists of analyze, design, development, implementation, and evaluation stages. The research subjects were 20 fifth-grade students. Data collection techniques included tests (pre-test and post-test) and non-test methods such as observation, interviews, questionnaires, and documentation. Data were analyzed qualitatively and quantitatively using normality tests, paired sample t-tests, and N-gain analysis. The Live Worksheets based on Problem-Based Learning were developed in Canva and accessed through the Live Worksheets platform. The product consists of a cover page, group identity page, general information page, core learning materials with problem-based questions, and a final page containing reinforcement materials and developer profiles. The feasibility results indicated very feasible criteria, with validation percentages of 92% from material experts and 94% from media experts, and positive responses from 90% of teachers and students. The effectiveness results showed a significant increase in scores from 47.5 to 71.25, a Sig. (2-tailed) value of 0.000 < 0.05, a 22% improvement in critical thinking skills, and an N-gain of 0.4741 (moderate category). Thus, the Live Worksheets based on Problem-Based Learning were deemed successfully developed, feasible, and effective in improving students' critical thinking skills in science.
Development of Interactive Web Learning Media Based on Problem-Based Learning on the Topic of Work Energy and Simple Machines for Junior High School Students Triana, Komang Regina; Erlina, Nia; Sarini, Putri
Jurnal Pijar MIPA Vol. 21 No. 2 (2026)
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.v21i2.11709

Abstract

The rapid development of digital technology in education requires innovative learning media to support students’ problem-solving skills in science learning. This study aims to develop an interactive web learning media based on problem-based learning on the topic of work, energy, and simple machines for junior high school students. This research employed a Research and Development (R&D) approach using the ADDIE model, focusing solely on the development stage. The data were collected using validation questionnaires (content, media, and language) and practicality questionnaires for teachers and students. The validation data were analyzed using the Gregory validity coefficient, while the practicality data were analyzed using descriptive statistical analysis. The validity test was conducted by two experts in content, media, and language relevant to their respective fields. The practicality test involved three science teachers and twelve students of SMP Negeri 1 Seririt. The results showed that the KVG for content validity was 0.95, while the media and language validity reached 1.00, both categorized as very high validity. The teacher's practicality score was 100, and the student's practicality score was 44.66, both categorized as very practical. These findings indicate that the developed interactive web-based learning media is valid and practical, and has the potential to support the development of students’ problem-solving skills in learning the concepts of work, energy, and simple machines.

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