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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
 71   72   73   74   75 
Development of learning-based chemistry devices guided discovery to improve critical thinking skills I Nyoman Loka; Wildan Wildan; Jeckson Siahaan; Mukhtar Haris; Lalu Rudyat Telly Savalas
Jurnal Pijar Mipa Vol. 17 No. 6 (2022): November 2022
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.v17i6.5605

Abstract

Learning tools have been developed through lesson plans, worksheets based on learning-guided discovery, and assessment instruments to improve critical thinking skills on the sub-subject factors that affect the reaction rate. The stages carried out in the production process of the two types of learning devices are defining, planning, and development, which are the three stages of the four stages of the 4D model. Two lecturers and one teacher validate the quality of the developed learning tools. Based on the results of data analysis, the lesson plan as a whole has good quality, the student worksheet is in the very good category, and the instrument for assessing students' chemical critical thinking skills has a high category of validity. Based on the integration of learning model guided discovery, the lesson plan and student worksheet have very good quality, and the integration of critical thinking skills in the assessment instrument is very good.
Chemical characteristics during the fermentation process of siam kintamani orange peel (Citrus nobilis) probiotic drink Nadya Treesna Wulansari; A.A Istri Mas Padmiswari; Putu Rima Sintyadewi
Jurnal Pijar Mipa Vol. 18 No. 5 (2023): September 2023
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.v18i5.5613

Abstract

Functional foods containing bacteria that may improve digestive function are called probiotic beverages. The fruit is rich in vitamins, minerals, antioxidants, and bioactive substances that benefit the body's health. Therefore, it can be used to make non-dairy probiotic drinks. Kintamani is a province in Bali that produces fruit, namely Siam oranges. In 2021, citrus fruit production in Kintamani, Bangli, is the second highest, at 104,528 per ton. However, there are still damaged fruits due to poor post-harvest processing and management. Orange peel is one of the citrus wastes that is not utilized, but this waste can still be processed into food with good nutritional value. The skin of Siam oranges contains secondary metabolites composed mainly of flavonoids, phenols, steroids, and triterpenoids. Furthermore, the Kintamani orange peel has better antioxidant potential than its seeds. Metabolites derived from Siam Kintamani orange peel have the potential to be used as probiotic beverages. A SCOBY (Symbiotic Culture of Bacteria and Yeasts) starter produces Siam orange peel probiotic drink. SCOBY is a gel layer formed from a mixture of bacteria and yeast. The desired outcome of this study was to assess the total acid, degree of acidity, pH, vitamin C, and total reducing sugar of Siam Kintamani orange peel as a result of fermented probiotic drinks. This is an experimental study with an entirely randomized approach. The treatment in this study was a variation in fermentation length, including several days (0, 3, 6, 9, 12, 15, and 18 days), with 4 repetitions. ANOVA was used to analyze the data, followed by a multiple-range test based on Duncan's equation, the fermentation time had a substantial impact on the total acid, pH, vitamin C, and total flavonoids of the Siam Kintamani orange peel probiotic drink (Citrus nobilis) (p<0.05). The time of the fermentation process influences the entire amount of acid, pH, vitamin C levels, and quantity of flavonoids in the Siam Kintamani orange peel probiotic drink. The longer the fermentation process, the more the total acid value increases while the pH decreases. The highest content of vitamin C and total flavonoids was produced on the ninth day of fermentation, at 70455.33 mg/100 ml and 25.46 mg QE/100 g, respectively.
Modeling the proportion of measles cases using sparse least trimmed squares Shelly Kilan Cahaya Pulungan; Rina Filia Sari
Jurnal Pijar Mipa Vol. 18 No. 5 (2023): September 2023
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.v18i5.5643

Abstract

Measles is a highly contagious disease and a health problem in several countries, including Indonesia. In 2022, Indonesia will experience an extraordinary situation (KLB) of measles cases, with the number of measles cases reaching 3,341 across 223 districts/cities. This data shows an increase of 32 times compared to 2021. North Sumatra is one of the provinces included in the list of regions and outbreak status, with 127 measles cases recorded in 2022. This study aims to find the factors that influence the number of measles cases in North Sumatra: one dependent variable, 34 independent variables, and 33 observations made up the study's variables. The data model chosen contains information on the percentage of measles cases linked to health, economic, human resource, and environmental variables. In addition, this study employs high-dimensional (data with many explanatory factors) data and includes outliers. Data with a large number of explanatory factors and outliers can be handled with LTS sparse analysis. The 34 independent variables were successfully chosen and reduced to 14 using the LTS sparse model. In addition, based on the  and RMSE values ​​for model evaluation, sparse LTS shows satisfactory results compared with classical LASSO, with  and RMSE values ​​for sparse LTS being 93.75% and 0.2933, respectively. Then, the  and RMSE values ​​for LASSO are -62.4% and 2.1734. The government can use these elements to guide lowering the number of measles cases in North Sumatra.
The effect of the resources-based learning model in ecosystem learning to improve student learning outcomes Teti Apriati; Syahruddin AR; Jamaluddin Jamaluddin; Baiq Sri Handayani
Jurnal Pijar Mipa Vol. 18 No. 5 (2023): September 2023
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.v18i5.4564

Abstract

This study aims to determine the effect of the Resource Based Learning (RBL) model in Ecosystem learning and its effect on biology learning outcomes at SMAN 3 Mataram. This type of research is research using a quantitative approach. The sample of this research was the students of class IX of SMAN 3 Mataram, which amounted to 32 students of X MIPA 1 for the control class and 32 students of X iMIPA i2 for the experimental class. The research data was obtained from a questionnaire on implementing the lesson plan and a learning outcome (post-test score) on ecosystem materials. The data analysis results show that the questionnaire score interval level for implementing the Resource Based Learning (RBL) model is 100% (very high). The conventional model shows the score interval that is implemented is 87.5%, and that is not implemented is 12.5%, and the level of validity of the questions in the cognitive domain, including the very valid criteria and the level of reliability of the questions in the cognitive domain, the criteria for reliable. The results of the data analysis of learning outcomes showed differences in the average post-test scores between the experimental class through the application of learning using the resource-based learning (RBL) learning model and the control class through the application of the conventional learning model. The post-test mean in the experimental class was 91.36, while the post-test mean in the control class was 71.69. The significance value of the count sample obtained is 0.532, the significance value obtained is greater than 0.05 Ho is rejected, and H1 is accepted, which means that the use of the Resource-based Learning (RBL) learning model is effective on student biology learning outcomes at SMAN 3 Mataram.
Growth and Development of Mouse Secondary Spermatocytes (Mouse muscle) After Giving Extra Kepel Fruit (Stelechocarpus burahol) Merta, I Wayan; Kusmiyati, Kusmiyati
Jurnal Pijar Mipa Vol. 19 No. 6 (2024): November 2024
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.v19i6.3415

Abstract

Indonesia has a tropical climate is rich in flora diversity. Many medicinal plants, including the Kepel (Stelechocarpus burahol), are herbal medicines. Kepel Fruit (Stelechocarpus burahol) contains secondary metabolites of alkaloids, flavonoids, polyphenols, saponins, triterpenoids and quinones. Some of these compounds have anti-fertility properties. Antifertility compounds are compounds that can prevent fertility by interfering with several normal reproductive mechanisms, both in men and women. This study aims to analyze the effectiveness of Kepel fruit extract on the growth and development of secondary spermatocytes in mice (Mouse muscle). This research uses true experiments and Posttest-Only Control with a quantitative approach. The samples used for this research design, both experimental and controlled, were taken randomly. Testing the significance of the treatment effect uses parametric statistics, namely the One-Way ANOVA test at a significance level of 5% (α = 0.05). Then, if there are differences, continue with the LSD further test (Least Significant Difference) at a significance level of 5% (α = 0.05). This research design used a Randomized Block Design (RAK) with a total sample of 32 mice (Mouse muscle) with 8 repetitions and 3 treatment groups. The growth and development of secondary spermatocytes in mice are determined by counting the number of secondary spermatocytes in the seminiferous tubules of mouse testicular incisions. The results of the one-way Anova test show that the calculated F is 6.41, and the value is sig. (P.Value) of 0.002, these results suggest  P.Value (0.002) < the α value (0.05), which means that the number of secondary spermatocytes is significantly different in each group so that this study can conclude that the administration of Kepel fruit extract (Stelechocarpus burahol) can significantly reduce the number of growth and development of mouse secondary spermatocytes (Mouse muscle ).
Diversity of Beautiful Beetles in the Suranadi Nature Tourism Park Area Ilhamdi, Mohammad Liwa; Idrus, Agil Al; Santoso, Didik; Raksun, Ahmad; Kusuma, Anindita Suliya Hangesti Mandra
Jurnal Pijar Mipa Vol. 19 No. 6 (2024): November 2024
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.v19i6.3950

Abstract

Beetles exhibit unique shapes and color variations and play important ecological roles in the environment. Suranadi Nature Tourism Park (TWA Suranadi), a nature-based tourism area, has the potential presence of beautiful beetles. This study aims to examine the diversity of beautiful beetles in TWA Suranadi to support its tourism appeal. Sampling was conducted in May 2024 by surveying predetermined paths. The beetles collected were identified using identification books, relevant articles, and taxonomic name verification through websites. Thirteen species were identified, belonging to six families (Cerambycidae; Chrysomelidae, Erotylidae, Eucnemidae, Hydrophilidae, Scarabaeidae). The Chrysomelidae and Scarabaeidae families were species-rich and exhibited diverse shapes and colors. Beetles found along the forest edge path showed greater diversity (H’=2.3842) compared to the other two paths, namely the water path (H’=2.2893) and the middle path (H’=1.9804). The diversity (H’) of beautiful beetles in TWA Suranadi was 2.3532.
Development of an Ointment to Medicate Medicine for Dosage Caused by Mucus in Babies with the Active Compound Sotong (Sepia sp.) and Essential Oils Cymbopogon citratus Hakim, Aliefman; Burhanuddin, Burhanuddin; Siahaan, Jeckson; Irawan, Jono; Fitri, Zelisa Nudia
Jurnal Pijar Mipa Vol. 19 No. 6 (2024): November 2024
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.v19i6.6445

Abstract

Sumbawa society is rich in culture, especially in traditional medicine. People use materials from the surrounding environment, including plants and animals, as active ingredients for medicine. Newborn babies and toddlers are susceptible to blockage of the respiratory tract with mucus. In babies, it is usually caused by an imperfect suction process, while in toddlers, it is caused by bacteria or viruses. The Samawa people use a mixture of cuttlefish (Sepia sp.) and eucalyptus oil as a medicine that effectively removes mucus from the body. The active ingredient in cuttlefish has an unpleasant odour and cannot be stored for long. When they need cuttlefish, people must look for them in markets or traders on the coast. Of course, this takes time to use. The ointment production innovation has many advantages, including practicality, no fishy smell, ease of obtaining, and ease of storage for the long term. Using the natural active ingredient lemongrass, essential oil adds aromatherapy and provides warmth to the chests of babies and toddlers. Natural active and gel-based ingredients are safe to use without side effects. The ointment was tested for active ingredient content using GCMS and organoleptic tests for gel stability, spreadability (homogeneity), pH, and skin irritation. Based on the description above, it can be concluded that the ointment product is made from an anti-skin irritation gel base, pH 7, and gel spreadability of 5.5 cm. The active substance comes from cuttlefish Sepia sp. by inhibiting the COX-2 enzyme and reducing the production of prostaglandin E2 (PGE2), an essential inflammatory mediator in the pathogenesis of asthma and bronchitis. The simple production process means that the price of the ointment is within people's purchasing power.
Application of the Search Solve Create Share Learning Model to Metacognitive Awareness and Learning Outcomes Kusmiyati, Kusmiyati; Merta, I Wayan
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
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.v19i5.6462

Abstract

This research aims to determine metacognitive awareness and learning outcomes through the search, solve, create and share (SSCS) learning model. This research was conducted on second-semester Biology Education Study Program students who took the Introduction to Education course. Metacognitive awareness data was collected using a modified questionnaire from the Metacognitive Awareness Inventory, then analysed qualitatively with four categories from not yet developed to very well developed. Learning outcome data is collected through tests and then analysed qualitatively, using five categories: very poor to very good. The metacognitive awareness results were dominated by students in the very well-developed category, as many as 48 people (96%), while the learning outcomes were dominated by students in the good category, as many as 24 people (48%). In conclusion, through the SSCS learning model, students can: (1). Manage their cognitive abilities and overcome their shortcomings very well; (2). Building independence, critical thinking, creativity, and self-confidence improves learning outcomes.
Critical Thinking Skills in Assessment Essays to Improve Motivation and Learning Outcomes: Bibliometric Analysis Hirahmah, Atifah; Yani, Intan Purnama; Festiyed, Festiyed; Emiliannur, Emiliannur
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
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.v19i5.7163

Abstract

As the demands of the modern world increase, critical thinking skills become increasingly important for students to succeed in education and life. Therefore, assessment essays are a tool to assess students' critical thinking skills. This research aims to analyse trends and developments in research on critical thinking skills in assessment essays to increase motivation and learning outcomes. This type of research is bibliometric analysis. Bibliometric methods are used to analyse scientific publications related to this topic. Data were collected from various scientific databases, including Scopus, Web of Science, and Google Scholar. The analysis results show that research on critical thinking skills in assessment essays has continued to increase in recent years. This topic is becoming increasingly important for educational researchers and practitioners. The analysis also indicates that this research comes from various scientific disciplines, such as physics. The main finding of this research is that critical thinking skills in assessment essays can increase student motivation and learning outcomes. This can be achieved by implementing various strategies, such as providing appropriate essay prompts, using clear grading rubrics, and providing constructive feedback to students. This research has several important implications for educational practice. First, this research shows that critical thinking ability is an essential skill for students to develop. Second, this research indicates that assessment essays can improve students' critical thinking skills. Third, this research guides teachers and other educators on effectively implementing essay assessments to increase student motivation and learning outcomes.
Improving Students Learning Outcomes through Implementing Make-a-Match Cooperative Model on Human Respiratory System Topic Nufitasari, Nufitasari; Mardiyyaningsih, Asriah Nurdini; Tenriawaru, Andi Besse
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
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.v19i5.7421

Abstract

The make-a-match cooperative model is a learning model in which the teacher prepares cards containing questions or problems and prepares answer cards, and then students look for their card pairs. The direct involvement of learners in the learning process will lead to the formation of knowledge and skills that will improve learning outcomes. Implementing the make-a-match learning model is more directed to the game because each learner can search for answers or pairs of question cards obtained more freely and actively. Science learning at MTs Negeri I Kubu Raya still needs to provide a pleasant learning experience. Students' interest in participating in science learning still needs to be higher. It impacts unsatisfactory learning outcomes, as seen from the many student learning outcomes below the Minimum Completion Criteria set by the school. This condition requires science learning that can encourage students to be directly involved and play an active role during learning so that the learning process can run well. The cooperative model of the match type is predicted to increase collaborative learning and student participation in a fun learning situation wrapped in a game situation. This model requires students to find question-answer pairs through interaction with friends in one class. This study aims to measure the improvement of students' learning outcomes in class VIII B MTs Negeri I Kubu Raya on the material of the human respiratory system using the make-a-match cooperative model. The research was conducted over two cycles, and each cycle consisted of two meetings with four stages: planning, action, observation, and reflection. The research subjects totalled 32 people, all of whom were female. Data collection techniques include observation and tests using observation sheet instruments and learning outcomes test questions that have been previously validated. The improvement in learning outcomes focused on this research is the improvement of cognitive learning outcomes. The data was presented as a percentage score of observation of the learning process of the match cooperative model and classical completeness. The results showed that the achievement of implementing the learning process using the make-a-match cooperative model was 100% in both the first and second cycles. The average learning outcome of students on human respiratory system material in the first cycle was 79.68 and increased to 84.84 in the second cycle. Activities carried out by students also increased in each cycle. The increase leads to the activeness or participation of students during learning. Based on the study's results, it can be concluded that learning using the make-a-match cooperative model can improve learning outcomes and students' activeness.

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