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Jurnal Pijar MIPA

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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 22 Documents

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Search results for , issue "Vol. 17 No. 3 (2022): May 2022" : 22 Documents clear

Analysis of vocational high school student metacognitive capabilities on geometry topics during the Covid-19 Pandemic Ina Nurhayati; Nani Ratnaningsih; Khomsatun Nimah
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This study aims to analyze students' metacognitive abilities in terms of metacognitive awareness inventory on geometry topics during the Covid-19 pandemic. The method used in this research is a descriptive qualitative method. The research was conducted at Vocational High School Swadaya Karangnunggal Indonesia in the 2020/2021 academic year. The population in this study was the eleventh-grade student of office automation and governance, totaling 24 students. The questionnaire consists of 35 statement items with five indicators, namely planning (7 items), strategies for managing information (10 items), monitoring of understanding (7 items), improvement strategy (5 items), and evaluation (6 items). The stages in metacognitive ability are planning, monitoring, and evaluating stages. The results showed that students with good metacognitive abilities could carry out all metacognitive stages well, solving problems, planning, monitoring, and evaluating. Students with moderate metacognitive abilities cannot carry out all metacognitive stages in solving problems. They can carry out the planning stage, and some indicators cannot be completed properly. Then at the monitoring stage, they cannot monitor implementation activity to solve the problem because one of the subjects misunderstood the intent of the problem. The other subject experienced a calculation error when solving the problem. While at the evaluation stage, they could not complete all the indicators. Students with low metacognitive abilities cannot carry out all metacognitive stages in solving problems. They can only carry out the planning stage. Some indicators cannot be completed properly. Then they cannot carry out the monitoring and evaluation stages with all indicators.

Mental model and scientific reasoning ability of chemistry education students during Covid-19 Pandemic online learning Supriadi Supriadi; Wildan Wildan; Aliefman Hakim; Jeckson Siahaan; Mukhtar Haris; Sunniarti Ariani
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This study aims to find: (1) the development of students' scientific reasoning abilities; (2) mental models developed by students in understanding the concept of dissolving weak acids and weak bases; and (3) the relationship between scientific reasoning abilities and mental models. The research approach is a descriptive study. The research subjects were 38 first-year students of the Chemical Education Study Program, Faculty of Teacher Training and Education, The University of Mataram. The research data collected were scientific reasoning ability data and student mental model data on the concept of dissolving weak acids and weak bases. Students' scientific reasoning ability was measured using the revised Classroom Test of Scientific Reasoning (CTSR) instrument in 2000, developed by Lawson and translated into Indonesian. The translation test has a reliability coefficient, calculated by the KR-20 formula, of 0.74. Identification of mental models using written tests and interviews. The content validity of the mental model test instruments is 94.2%. The data obtained were analyzed descriptively. The identification of mental models is made by using a constant comparative technique. The results showed a delay in developing students' scientific reasoning abilities compared to the criteria set by Lawson. Most of the students developed initial mental models in understanding dissolving weak acids and bases. In addition, the higher the student's scientific reasoning ability, the mental model developed tends to approach the scientific mental model.

Students' responses to learning multimedia on the human digestive system during Covid-19 Pandemic I Wayan Merta; Kusmiyati Kusmiyati; Johanes Purwadi
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This study aimed to determine students' satisfaction with learning multimedia on the human digestive system topic at a public high school (SMA Negeri 1 Praya Tengah). This study applied a quantitative approach with a survey method. The population in this study were students of class XI MIPA SMA Negeri 1 Praya Tengah. Meanwhile, the sample was determined by purposive sampling with the category of students using multimedia learning media on human digestive material. Therefore, the sample was 35 students from class XI MIPA 3. The data on students' satisfaction was conducted using a Likert-scale questionnaire instrument. The data analysis technique used was calculating the percentage of the data and then interpreting the data percentage score. The results of data analysis showed that the level of students' satisfaction was 94.14%, with the interpretation in the category of very satisfying. It can be concluded that students are very satisfied with multimedia learning media on the human digestive system material at SMA Negeri 1 Praya Tengah.

The effect of using integrated learning model on science learning in junior high school: Systematic Literature Review Sri Aryani; Zarkasih Zarkasih; Radeswandri Radeswandri; Rian Vebrianto
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

The implementation of the 2013 curriculum in learning uses a scientific approach, student-centered learning, integrated learning, developing of students' thinking skills, instilling spiritual and social attitudes, as well as exploring students' communication and collaboration skills. Based on the literature review, many schools teach science partially. It turns out that teachers face many obstacles when implementing integrated science learning. One of them is the difficulty of teachers designing integrated science learning models, causing the learning process not to achieve the desired results. It affects students' low learning outcomes and cognitive abilities. Therefore, this study aims to determine the effect and effectiveness of the Integrated Science learning model on science learning in junior high schools. The method used is a systematic literature review using PRISMA diagrams. The database used to search for literature is two digital libraries, namely Google Scholar and Mendeley. Literature screening was conducted to obtain scientific article publications from 2017 to 2021, which discuss using the Integrated Science learning model in science learning in junior high schools. The results of the scientific article search contained eight articles that would be analyzed and synthesized. The analytical technique used is the narrative method by grouping the extracted data. The results of this study affect students due to the use of the Integrated Science learning model, namely in terms of learning outcomes, 21st-century skills, and attitude competence. The use of the Integrated science learning model has proven to be effective in the science learning process in junior high schools.

Implementation of PhET simulation with discovery learning model to improve understanding of dynamic electricity concepts Vera Meidy Anisa; Dyah Astriani
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This study describes the implementation of learning using PhET simulation with a discovery learning model, the effect on increasing understanding of dynamic electricity concepts in science subjects, and student responses after participating in the lesson. This type of research uses a pre-experiment in the form of a one-group pretest-posttest design. The research was conducted on class IX IJHS students at Al-Islahiyah junior high school. Collecting data using the test method, questionnaire method, and observation method, with instruments in the form of test sheets, student response questionnaire sheets, and learning implementation observation sheets. The results of this study are 1) the implementation of learning using PhET simulation media with discovery learning model at first to fourth meetings is categorized as very good with percentages of 95.05%, 94.78%, 99.47%, and 100%. 2) The average n-gain value of all sub-concepts in class IX-A and class IX-B of 0.68 and 0.66, respectively, in the medium category indicate an increase in concept understanding. 3) The students show a positive response to the implementation of learning with PhET simulation with a discovery learning model with an average percentage of 74.28%. Thus, PhET simulation learning with a discovery learning model can improve students understanding of concepts.

The practicality of problem-based learning tools assisted by interactive simulations to improve students' creative thinking ability Ratnah Ratnah; Wildan Wildan; Muntari Muntari
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Learning tools are important to facilitate students in improving creative thinking skills. The ultimate goal of this research is to produce practical problem-based learning tools assisted by interactive simulations. This research uses a 4D development model: define, design, develop, and disseminate. The interactive simulation-assisted problem-based learning tool that was developed consisted of a syllabus, lesson plans, worksheets, and evaluation instruments. The research subjects used were students of class XI MA in Mataram City. The practicality test is carried out by observing the implementation of learning, the process of creative thinking skills during learning, and teacher and student responses related to learning and learning tools. The results of the practicality test showed in the practical category. They received a positive response from both teachers and students, with the percentage range of the practicality of all indicators being 60% to 80%.

Problem-based learning model assisted by google meet for parabolic motion topic to improve student learning outcomes Wahyuni D. Sumayow; Trisnawaty Junus Buhungo; Ritin Uloli; Supartin Supartin
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This research aims to produce quality physics learning tools using the Problem Based Learning (PBL) learning model. The study was conducted at a public senior high school (SMA Negeri 1 Tapa), Gorontalo, Indonesia. The device was developed using the 4D development model developed by Thiagarajan and Semel. The research results on the device show that the developed device is of high quality. Learning tools are said to be valid for use with little revision. It can be seen based on the average validation results of 3.5 to 3.6. The effectiveness of learning devices is seen in the increase in student learning outcomes. It consists of the cognitive domain from the first meeting until the second meeting. It obtained N Gain 0.54 with N Gain criteria moderate, in the attitude domain with an average percentage of 81.77%. The results of observing student activities during two meetings: 71.80% with good criteria. The psychomotor aspects with an average percentage of 80.36%, and the practicality of the developed devices seen from the observation sheet on the implementation of learning 84.78%, as well as teacher response questionnaires and student response questionnaires with an average the percentage of 79.88% and 84.80% got a positive response. There is an influence on student learning outcomes after the problem-based learning model is set with the help of the google meet application on parabolic motion material in the development of learning devices.

Analyze breaking palm oil dormancy through chemical processes using multivariate analysis of variance Widya Reza; Vitri Aprilla Handayani; Eko Sulistyono
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Palm oil is a dormant plant. The main cause of oil palm seed dormancy is the hard and thick seed coat or shell, inhibiting the effective absorption of water and gases. The presence of a seed coat barrier causes the germination process of oil palm seeds to be hampered. This study aims to determine the effect of chemical treatment on breaking palm oil dormancy by immersion in a solution of strong acids, namely H2SO4, KNO3, and HCl. This study used a completely random design (CRD) with three treatments, four observations, and five replications. The results of the following study were analyzed using MANOVA with the parameters observed were germination rate, germination rate, seedling height, and most extended root length. Based on the analysis results, it was found that immersion with a solution of a strong acid, namely H2SO4, KNO3, and HCl, had different effects on breaking palm oil dormancy. The highest average germination rate was through immersion with HCl, which produced an average of 65.24. The highest average germination was through immersion in H2SO4 with an average of 8.52. In contrast, the average seedling height and most extended root length were soaked in HCl with an average of 35.28, and 15, respectively. Based on the results obtained, the best chemical treatment for breaking palm oil dormancy is through soaking with HCl.

Development of student worksheets with contextual teaching and learning (CTL) approach to train critical thinking skills responsibility of students on thermochemistry concepts Sitti Kholifah Amartyah; Rusmini Rusmini
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This study aims to produce and describe the feasibility of student worksheets with a contextual teaching and learning CTL approach in training critical thinking skills and responsibility in thermochemical material. This study uses a research and development type, the ADDIE (Analysis, Design, Development, Implementation, Evaluation). The research sample was 24 students of class XI IPA MA Nurut Taqwa Grujugan Cermee Bondowoso, West Java, Indonesia. The results showed that: 1) Validity analysis obtained an average percentage of 87% with very valid criteria; 2) Practical analysis based on the percentage of response questionnaires and student activity observations of 88% and 98% with very practical criteria; 3) Analysis of effectiveness based on pretest-posttest data: a) Normality test of cognitive knowledge and critical thinking skills 0.985 and 0.297 normally distributed; b) Paired Sample t-Test 0.000 showed an increase in learning outcomes; c) The N-Gain test of cognitive knowledge and critical thinking skills scored 78% and 76% showed an increase in learning outcomes and attitude of respondents obtained a score of 87% with very good criteria. IN conclusion, the developed student worksheet with the CTL approach is categorized as feasible with valid, practical, and effective criteria. The development of student worksheets as teaching material to improve students' critical thinking skills becomes a choice for learning to make learning more meaningful, accompanied by the attitude of students who are full of responsibility, which is an important thing to do.

Determination of percentage yield and total phenolic content of ethanol extract from purple passion (Passiflora edulis f. edulis Sims) fruit peel Sisminnitah Dewi Nofita; Khoirul Ngibad; Achmad Fathoni Rodli
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Free radicals can trigger various diseases, such as cancer, cardiovascular, arthritis, diabetes, neurological disorders, and aging. Thus, antioxidants are needed to reduce these free radicals. The peel of the purple passion fruit (Passiflora edulis f. edulis Sims) has many phenolic compounds that indicate antioxidant capacity. This study aims to determine the percentage yield and total phenolic contents in the ethanol extract of purple passion fruit peel. Extraction of purple passion fruit peel using the method of maceration with ethanol solvent. Measurement of total phenolic levels in ethanol extract from purple passion fruit peel using the UV–Vis Spectrophototometry method with Folin-Ciocalteu reagent. The principle of this method is based on the reagent between gallic acid and the Folin-Ciocalteu reagent that will produce a molybdenum-tungsten complex. Furthermore, the addition of Na2CO3 solution will change the color of the solution to blue, and its absorbance can be measured at a wavelength of 765 nm. The results showed that the ethanol extract from purple passion fruit peel yielded 1.363% and total phenolic levels of 30.758 mg of gallic acid equivalent per the gram of extract. The existence of the total phenolic content proves that the ethanol extract from purple passion fruit peel has the potential to be used as an alternative source of natural antioxidants.

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Saprizal Hadisaputra

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Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

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Nusa tenggara barat

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Saprizal Hadisaputra

Contact Email rizal@unram.ac.id

Phone +6287738066422

Journal Mail Official pijarmipa@unram.ac.id

Editorial Address Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Saprizal Hadisaputra

Contact Email
rizal@unram.ac.id

Phone
+6287738066422

Journal Mail Official
pijarmipa@unram.ac.id

Editorial Address
Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA