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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 1,179 Documents
 93   94   95   96   97 
Development of Guided Inquiry-Based Student Worksheets on the Concept of Classification of Living Organisms to Train Students Science Process Skills Padliah, Siti; Sjaifuddin, Sjaifuddin; Alamsyah, Trian Pamungkas
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.v20i6.9759

Abstract

Science learning in schools should not only emphasize conceptual understanding but also foster science process skills that train critical thinking, analytical reasoning, and problem-solving abilities. However, classroom practice is still dominated by rote memorization, leaving students’ science process skills underdeveloped. This study addresses the gap by developing a Guided Inquiry-based Student Worksheet on the concept of living things classification. The unique contribution of this student worksheet lies in its integration of guided inquiry phases with authentic classification activities, enabling students to engage in exploration, observation, and independent analysis. Unlike conventional worksheets that mainly provide summaries or drill questions, this product is designed to stimulate scientific investigation and active participation. The research adopted the 4D development model (Define, Design, Develop, Disseminate), although this study was limited to the Develop stage. Nine validators (three media experts, three material experts, and three science teachers) and 35 seventh-grade students participated as respondents. Validation results indicated an average feasibility score of 86.9% (“highly feasible”), while student responses reached 87.2% (“very positive”). These findings confirm that the developed student worksheet is not only valid in terms of content and presentation but also well-received by students. Beyond providing an alternative learning material, the broader implication of this study is that Guided Inquiry-based student worksheet can serve as a strategic tool to cultivate science process skills by combining discovery learning with real-life classification practices. Consequently, this product has the potential to enrich science learning with more meaningful and activity-oriented approaches, while preparing students to face 21st-century challenges that demand critical thinking, collaboration, and evidence-based reasoning.
Improving Learning Outcomes on the Musculoskeletal System through Direct Instruction with Biology Magazines Nabila, Nuruliza; Titin, Titin; Wahyuni, Eko Sri
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.v20i6.9789

Abstract

The students of class XI IPA 2 at MAN 1 Kubu Raya demonstrated low understanding of the musculoskeletal system, which resulted in poor learning outcomes. This issue stemmed from the dominance of a teacher-centered approach, where learning relied heavily on lectures guided by textbooks. A potential solution is the implementation of a structured learning model, such as direct instruction, which has the capacity to enhance student learning outcomes. Furthermore, integrating the direct instruction model with biology magazines can stimulate students’ interest, attention, and comprehension of the topic. This research aimed to examine the improvement of student learning outcomes on the musculoskeletal system through the application of the direct instruction model assisted by biology magazines in class XI IPA 2 at MAN 1 Kubu Raya. The research employed Classroom Action Research, conducted in two cycles, each consisting of two meetings following the stages of planning, implementation, observation, and reflection. The research subjects were 33 students of XI IPA 2, with instruments comprising observation sheets and learning outcome test sheets, both validated and confirmed reliable. Data analysis involved calculating the percentage of implementation based on observation results, followed by determining the percentage of classical achievement of learning outcomes. The findings revealed an increase in learning outcomes, from 78.18% in Cycle I to 84.40% in Cycle II, with learning implementation reaching 100% in both cycles. These results indicate that the use of the direct instruction model assisted by biology magazines can significantly improve student learning outcomes on the musculoskeletal system. This implies that integrating the direct instruction model with an innovative learning media (such as magazines) can provide structured, engaging, and comprehensive biology learning experiences that effectively enhance students’ learning outcomes.
Development of an E-worksheet Based on Problem-Based Learning with Prompting Question Technique on Chemical Equilibrium Material Amanda, Putry; Syolendra, Dwi Finna
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.v20i6.9801

Abstract

Students' misunderstandings and low level of active involvement in learning chemical equilibrium and the incomplete application of problem-based learning models. This study was motivated by students' misconceptions and low active involvement in learning chemical equilibrium material. In addition, the implementation of the problem-based learning model has not been fully realized, and students still experience difficulties in connecting and applying chemical concepts to everyday life. The purpose of this study is to develop a problem-based learning e-worksheet with prompting question techniques on chemical equilibrium material that is valid and practical. The method used is research and development (R&D) with the Plomp model, which includes the preliminary research and prototyping phases. Validity analysis techniques were analyzed using Aiken's V scale, and practicality analysis techniques were analyzed using a percentage formula. The validity analysis yielded an average score of 0.925, which is considered valid. The practicality test results showed that the e-worksheet is highly practical, with an average score of 94.375% from teachers and 89.38% from students. Based on the results of the study, it can be concluded that the development of an e-worksheet based on problem-based learning with prompting question techniques on chemical equilibrium material is valid and very practical.
Development of Science Literacy Test Instruments on Temperature and Heat Materials by Integrating Local Wisdom in the Production of Karang Batik, a Speciality of Tuban Regency Muizzah, Novy Ainul; Jauhariyah, Mukhayyarotin Niswati Rodliyatul
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.v20i6.9817

Abstract

The local wisdom of Karang Batik from Tuban can provide a contextual basis for developing scientific literacy test instruments that are more meaningful. This study aims to develop a science literacy test instrument integrated with the local wisdom of Karang Batik making, which is unique to Tuban, and to identify students' science literacy profiles on the subject of temperature and heat. The development was carried out using the ADDIE model with data collection through interviews, validation questionnaires, and tests. Data analysis included content validity (Aiken's V and Percentage of Agreement), empirical validity (item–total correlation), reliability (Cronbach's Alpha), difficulty level, and discriminating power. The instrument was tested on 30 university students and implemented for 70 students at Tuban 1 State Senior High School. The results showed that content validity was in the very good category (PoA ≥ 97%), 67% of the items were empirically valid, and reliability was 0.690, which is classified as high. The level of difficulty ranged from easy to moderate, with sufficient discrimination. Students' science literacy profiles varied from very low to very high, with the majority of students in the high category. These findings indicate that the developed instrument is suitable for measuring science literacy and contributes to contextual learning efforts based on local wisdom.
Formulation of Takokak Leaf Powder (Solanum torvum Swartz.) with Cinnamon and Palm Sugar as a Herbal Drink Ginitri, A.A. Bulan; Agung, Ida Ayu Mirah
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.v20i6.9819

Abstract

Public health is increasingly becoming a major concern, especially in efforts to prevent disease through healthier and more natural consumption patterns. Herbal drinks have become one of the most widely developed alternatives because of their health benefits. Various medicinal plants have been traditionally used in folk medicine, including takokak leaves (Solanum torvum Swartz.), cinnamon (Cinnamomum spp.), and palm sugar (Arenga pinnata). Takokak leaves are known to contain bioactive compounds with potential antioxidant properties, while cinnamon and palm sugar contribute to enhancing palatability while enriching bioactive compounds. This study aims to formulate takokak leaf powder (Solanum torvum Swartz.) with cinnamon and palm sugar as a herbal beverage and evaluate its functional potential. This study is an experimental study with a completely randomized design (CRD) comprising six treatment combinations and one control. The results showed that the addition of cinnamon and palm sugar to the takokak leaf herbal beverage significantly affected the levels of flavonoids, phenols, tannins, and IC50. Flavonoid levels ranged from 6.38 to 9.71 mg/100g, phenolic content ranged from 4.67 to 6.49 mg/100g, tannin content ranged from 3.74 to 7.19 mg/100g, and IC50 values ranged from 19,293.34 to 42,290.50 ppm. The results also showed that all positive treatments contained alkaloid and saponin compounds. Based on the hedonic sensory test results, treatment P1 (2% cinnamon and 3% palm sugar) received the highest preference score compared to other treatments based on the parameters of color, aroma, taste, viscosity, and overall acceptance. These findings indicate the potential of takokak herbal beverage formulations as a source of natural antioxidants that are sensorially acceptable. Further research is recommended to evaluate takokak leaf herbal beverages with the addition of cinnamon and palm sugar in vitro and in vivo.
Development of the Science Knowledge Application on Temperature, Heat, and Expansion to Improve Student Learning Outcomes Mokoginta, Chindy Dahlia; Mursalin, Mursalin; Payu, Citron S.; Abdjul, Tirtawaty; Ntobuo, Nova Elysia; Uloli, Ritin
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.v20i6.9882

Abstract

Sains Knowledge is an application developed to support student learning. This study aims to examine the validity, practicality, and effectiveness of the Sains Knowledge application in improving student learning outcomes on the topics of temperature, heat, and expansion. The research employed a One-Group pretest–posttest design, with data analyzed using the N-gain test. The study was conducted with seventh-grade students (Class VII-A) at SMP Negeri 11, Gorontalo City, and employed a Research and Development (R&D) approach based on the 4D model, comprising the stages of define, design, development, and dissemination. The findings show that Sains Knowledge met the eligibility criteria as a learning medium, with an average validation score of 94%. The practicality instruments indicated a 92% implementation rate, while student responses fell into the “very good” category at 80% and the “good” category at 20%. In terms of effectiveness, student activity reached 86%, and learning outcomes improved from an average score of 48 (pretest) to 90 (posttest), with an average N-gain of 0.81 in the “high” category. These results demonstrate that the Sains Knowledge application is valid, practical, and effective in enhancing student learning outcomes, with broader implications for improving digital learning media in secondary education.
Elementary School Teachers Perceptions toward Teaching Reproductive Material as Part of Science Education in Elementary Schools Iskandar, Suhendra
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.v20i6.9885

Abstract

Teaching reproductive education at the elementary school level remains a sensitive issue, balancing the need to prevent sexual abuse through proper knowledge with concerns about social, religious, and cultural norms. This study aims to explore the perceptions of prospective elementary school teachers in Gorontalo regarding reproductive content in science education. Using a descriptive quantitative design, data were collected from 60 respondents through a closed-ended questionnaire. The findings show that while most respondents opposed teaching reproductive material at the elementary level due to moral and cultural concerns, many were not against the content itself but rather the method of delivery and the consideration of children’s maturity. This suggests that reproductive education could be implemented if presented through contextual and values-based approaches, such as moral-educational narratives. The study highlights both the sensitivity of the topic and the potential pathways for its gradual and culturally aligned integration into science education.
Phenolic and Antioxidant Activity of Moringa-Bean Sprouts Extract as PGRs for Soybeans Itsnaini, Putri Nur; Anggarani, Mirwa Adiprahara
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.v20i6.9941

Abstract

The demand for soybeans continues to increase, but local production remains insufficient, requiring strategies to enhance productivity and quality, such as the application of Plant Growth Regulators (PGRs). Natural PGRs derived from moringa leaves and mung bean sprouts, which are rich in auxins and cytokinins, have the potential to accelerate growth and stimulate the production of secondary metabolites. This study investigated various proportions of moringa leaf and mung bean sprout extracts to evaluate their phenolic content, antioxidant activity, and potential as natural PGRs in soybean cultivation. The extracts were analyzed using the Folin–Ciocalteu method for total phenolics and the DPPH assay for antioxidant activity. Among the treatments, Variation E, with a higher proportion of mung bean sprout extract, proved to be the most effective, enhancing both antioxidant activity and phenolic compound production. These findings highlight the novelty of combining moringa leaf and mung bean sprout extracts as a natural PGR strategy, demonstrating promising potential to support soybean growth and improve crop quality.
The Influence of the Think-Pair-Share Cooperative Learning Model on Learning Outcomes on the Topic of Work and Simple Machines Akuba, Siskawati; Odja, Abdul Haris; Buhungo, Trisnawaty Junus
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.v20i6.9966

Abstract

Science learning is often regarded as difficult by students due to the many concepts that are abstract and not well understood. Therefore, a learning model is required that can enhance students' academic performance. One of them is the cooperative learning model known as Think-Pair-Share (TPS), which encourages students to think independently, engage in paired discussions, and share ideas within their groups. This research aims to determine the effect of the Think-Pair-Share type cooperative learning model on the learning outcomes of simple machines and efforts in SMP Negeri 1 Kwandang. This study is an experimental research, utilising a one-group pretest-posttest Design. The sampling technique employed in this research is Cluster Random Sampling. The sample in this study uses class VIIIC as the experimental class, grouped through a random lottery. Data for this research were collected using a testing technique, which included normality tests, hypothesis tests, and n-gain tests. The analysis results indicate that the calculated values for all sample classes are greater than the tabulated values; thus, the hypothesis (H1) is accepted. The N-gain value of 0.80 indicates an improvement in learning outcomes that falls under the high category. The application of the Think-Pair-Share model, specifically for the material on simple machines and business, has rarely been researched before. This model has been proven to help students connect abstract concepts with real-life situations, fostering active participation in the learning process. Thus, the TPS type cooperative learning model has a significant impact on improving students' learning outcomes. This research also provides practical benefits as a basis for teachers to implement the cooperative model of Think Pair Share in learning to create a more active, effective, and meaningful learning atmosphere.
Comparison of the Effects of a Combination of Centella asiatica and Mentha piperita Leaf Extracts on the Number of Normal Brain Cells in Male Mice (Mus musculus) Padmiswari, Anak Agung Istri Mas; Antari, Ni Wayan Sukma; Gandamayu, Ida Bagus Maha; Adiana, I Nengah
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.v20i6.9998

Abstract

Chronic stress is known to cause neuronal damage in the hippocampus, particularly in the CA1 and CA3 areas, which play a crucial role in memory and learning. One way to prevent this damage is by using natural ingredients with neuroprotective properties. This study aimed to compare the effects of Centella asiatica and Mentha piperita leaf extracts, either singly or in combination, on the number of normal neurons in the hippocampus of male mice exposed to stress. Twenty-five male mice were divided into five treatment groups: K− (control without treatment), K+ (stress without extract), P1 (stress + Centella asiatica extract), P2 (stress + Mentha piperita extract), and P3 (stress + combination of Centella asiatica and Mentha piperita). Stress was induced using a restraint stress method, while the extracts were administered orally at the prescribed dosage. After the treatment period, the hippocampus was removed, and histological slides were prepared with Hematoxylin-Eosin staining to count the number of normal neurons in the CA1 and CA3 areas. The results showed that the K+ group experienced a significant decrease in the number of normal neurons compared to the K− group. Administration of gotu kola (P1) and mint (P2) extracts increased the number of neurons compared to K+, but not to the same extent as K−. The combination of Centella asiatica and Mentha piperita extracts (P3) showed the most optimal effect, with the number of normal neurons approaching that of the negative control group. These findings indicate that the combination of Centella asiatica and Mentha piperita has synergistic potential in protecting hippocampal neurons from stress-induced damage. Further research is needed to explore the molecular mechanisms underlying this neuroprotective effect.

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