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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
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Project-based learning model to promote students critical and creative thinking skills Salsadella Andini; Rusmini Rusmini
Jurnal Pijar Mipa Vol. 17 No. 4 (2022): July 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.617 KB) | DOI: 10.29303/jpm.v17i4.3717

Abstract

This study aimed  to assess the worthiness of the project-based learning model in training critical and creative thinking skills on colloidal material. This research is a pre-experimental design with a one group pretest-posttest design. 31 students of XI MIPA 4 at MAN 1 Mojokerto were the targets studied in this study. The results of this study are: 1) The average percentage of the project-based learning treatment obtained is 78% in the good category (1st meeting) and 88% in the very good category (2nd meeting). 2) The activity of students is declared good with a percentage of 88%. 3) Critical and creative thinking skills have high criteria, as shown in the results of N-Gain 0.70, 0.73, and 0.73. 4) Student learning outcomes increase, which indicated from one complete student to 28 complete students. 5) A total of 95% positive responses were obtained from 31 students on the Project-Based Learning model. So the conclusion that can be drawn is that the project based learning model can train students' critical and creative thinking skills on colloidal material. project based learning model can be used as an alternative learning strategy to practice critical and creative thinking skills as the demands of 21st-century skills. It is more maximal and meaningful so that the desired learning activities and better results study can be achieved.
Students problem-solving skills ability on work and energy topics with different science process skills using a problem-based learning model Denda Nadia Miranti; Ahmad Harjono; Satutik Rahayu
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3171

Abstract

This study aims to: (1) determine the effect of the problem-based learning model on students' problem-solving abilities; (2) study the effect of science process skills on students' problem-solving abilities; (3) find the interaction between problem-based learning PBL models and science process skills on students' problem-solving abilities. The type of research is quasi-experimental research with Factorial Design 2 x 2. Population in research of all tenth-grade science students at senior high school SMA Negeri 1 Gunungsari in 2017/2018 academic years. Sampling in this study uses the cluster random sampling technique, in which the X MIA is an experiment class, and the X MIA 1 is a control class. The research instrument used was a description test taking into account the problem's validity, reliability, power difference, and level of difficulty and using observation sheets of science process skills. The data of this study were analyzed by two-way variance analysis with a 2 x 2 factorial design. Based on the result of the study, the average value of the post-test experimental class was 80.29, and the control class was 73.25. The normality and homogeneity tests showed that the two classes were normally distributed and homogeneous at a significant level of 0.05. Then proceed with hypothesis testing using a two-way ANOVA test. The result showed that: (1) FA>Ftable that is 29.35>4.02 means that there is an influence of the PBL model on students' problem-solving abilities; (2) FB>Ftable, namely 29.35 > 4.02 means that there is an influence of science process skills on students' problem-solving abilities; (3) FAB< Ftable, is 3.93<4.02 means that there is no interaction between PBL models and science process skills on students' problem-solving abilities.
Analysis of mathematical representation ability on pythagoras theorem reviewed from learning style of junior high school students Ni Nyoman Yustini Wikantari; Laila Hayati; Wahidaturrahmi Wahidaturrahmi; Baidowi Baidowi
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.v17i6.3311

Abstract

This study aims to determine the mathematical representation ability of class IX students with visual, auditory, and kinesthetic learning styles on the Pythagoras Theorem material at SMPN 1 (public junior high school) Gunungsari Indonesia in the 2021/2022 academic year. This type of research is descriptive with a quantitative approach. The populations in this study were all students of class IX SMPN 1 Gunungsari. The research sampling technique used purposive sampling, and the sample was class IX-H. The instruments used are learning style questionnaires, mathematical representation ability tests, and interview guidelines. The results of this study indicate that the mathematical representation ability of students with visual learning styles is 35.56% in the low category, or students have yet to be able to meet the overall visual, symbolic, and verbal representation indicators. Furthermore, the mathematical representation ability of students with auditory and kinesthetic learning styles is 49.86% and 41.87% in the medium category. Respectively, students have been able to meet the indicators of visual and symbolic representation quite well but have yet to be able to fulfill the visual and symbolic representation and verbal representation indicators.
Analysis of student mathematical investigations ability on transformation geometry in terms of cognitive style Nina Muthmainnah; Sri Subarinah; Amrullah Amrullah; Arjudin Arjudin
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3391

Abstract

Mathematical investigation is an activity that can encourage an experimental activity, collect data, make observations, identify patterns, make and test conjectures and make generalizations used to improve skills and develop students' mathematical thinking processes optimally. Different cognitive styles can affect students' ability to think and reason, especially in solving mathematical investigative problems. Therefore, this paper will examine mathematical investigations' ability in reflective and impulsive cognitive styles in qualitative descriptive analysis. The subjects in eleventh-grade senior high school at SMA Negeri 2 Mataram, Indonesia. Students were selected using a purposive sampling technique, and six students were selected as subjects in the interview consisting of three reflective students and three impulsive students. The instruments used are mathematical investigation tests, Matching Familiar Figure MFFT tests, and interview guidelines. The results showed that students with a reflective cognitive style were more thorough and systematic in writing down the answers to each point and always thought first in solving problems. Most students went through 4 stages of mathematical investigations: specialization, conjecture, generalization, and justification. While students with impulsive cognitive styles mostly managed to go through 3 stages of mathematical investigations, specialization, conjecture, and generalization, due to a lack of accuracy in solving questions and providing as simple answers as possible according to the question request.
Analysis of misconceptions of senior high school students on biodiversity materials, interactions, and their role in nature Mohammad Liwa Ilhamdi; Aulia Vina Rahmani; Muhamad Syazali
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.v17i6.3436

Abstract

Forming the student's right and correct concept in Biology science is necessary. Lack of understanding of concepts in students can lead to a discrepancy of concepts called misconceptions. This study aims to identify the profile of students' misconceptions in grade tenth on material biodiversity, interactions, and their roles in nature. The results showed that the average conception of students was more significant than those who experienced misconceptions. The average concept is 50.00%, while the average who experiences misconceptions is 29.41%, and 20.59% of students do not answer. If it is categorized in the assessment category, the percentage of misconceptions is in low category.
Determination of flavonoid content of ethanol and ethyl acetate extract from purple passion fruit peel Siti Delta Aisyah; Khoirul Ngibad
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3463

Abstract

Purple passion fruit is a fruit that is widely cultivated in Indonesia for syrup and juice making. Purple passion fruit has a high nutritional value, such as antioxidants. Passion fruit contains vitamin A, vitamin C, β-carotene, flavonoid, and fiber components. However, passion fruit peel is a waste that can not be appropriately facilitated, so it becomes a waste that can pollute the environment. In addition, the passion fruit peel contains flavonoids that can be used as antidiabetic drugs. This study aimed to determine the difference in flavonoid levels in the peel extract of purple passion fruit by using ethanol and ethyl acetate solvents. The total flavonoid test using the AlCl3 method is then read on a UV-Vis spectrophotometer. The results showed total flavonoid levels of passion fruit peel extract with ethanol and ethyl acetate solvents of 15.01 mg QE/g samples and 1.27 mg QE/g extract. The highest total flavonoid levels were obtained in ethanol extract of 15.01 mg QE/g extract.
The effect of vermicompost and NPK fertilizer on the growth of Spinach (Amaranthus tricolor) Ahmad Raksun; I Wayan Merta; I Gde Mertha; Mohammad Liwa Ilhamdi
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3464

Abstract

Spinach is a plant usually cultivated for its leaves to be consumed as green vegetables. Spinach contains vitamins, protein, fat, carbohydrates, and minerals. Research on the effect of Vermicompost and NPK fertilizer on the growth of spinach has been carried out from July to September 2021 in Lombok, Indonesia. The objectives of the study are to determine:  (1) the effect of Vermicompost on the growth of spinach, (2) the effect of NPK fertilizer on the growth of spinach, (3) the interaction effect of Vermicompost and NPK fertilizer on the growth of spinach. This research was conducted experimentally using a factorial, completely randomized design with two factors and three replications. The first factor was the dose of NPK fertilizer which consisted of 4 treatment levels, namely 0 g, 0.5 g, 1 g, and 1.5 g for each plant. The second factor is the dose of Vermicompost, which consists of 5 levels, namely 0 kg, 0.6 kg, 1.2 kg, 1.8 kg, and 2.4 kg for 1 m2 of agricultural land. The vermicompost treatment was carried out ten days before planting. The NPK fertilizer treatment was carried out ten and 20 days after planting. Spinach growth parameters were stem diameter, plant height, total leaf, leaf length, and leaf width. The results of the study were: (1) the treatment of NPK fertilizer had a significant effect on the number of leaves, leaf length, leaf width, stem height, and stem diameter of spinach, (2) the application of Vermicompost had a significant effect on the number of leaves, leaf length, leaf width, and stem height but did not significantly affect the diameter of the stems, (3) the optimum dose of NPK fertilizer was 1 gram per plant, (4) treatment 1.8 kg vermicompost resulted in better growth of spinach compared to other.
Analysis of higher-order thinking skills of science students at Madrasyah Tsanawiyah Muslim Nahdatul Ulama during the Covid-19 Pandemic Adinda Dwi Saputri Sugino; Erman Erman
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3607

Abstract

This study aims to describe the higher-order thinking skills of Muslim students of Madrasyah Tsanawiyah Muslim Nahdatul Ulama Sidoarjo Indonesia during the Covid-19 pandemic. The type of research is descriptive analysis with a quantitative approach by analyzing students' higher-order thinking skills on the structure and function of plant tissues, vibrations and waves, and the circulatory system. The subjects of this study were one science teacher and 36 students in the eighth grade. The research instrument consisted of a HOTS test sheet, questionnaire, and interview sheet. The interview sheet consists of 9 questions analyzed with NVIVO 12 software and a test containing five questions on each material, including the HOTS indicator. The data analysis technique used is descriptive statistics. The results showed a decrease in students' HOTS abilities during the pandemic. It is marked by the achievement of average scores and students' abilities in the creative component, which tended to be low in the three materials measured. The decline in students' HOTS abilities before and during the pandemic occurred in the three indicators with the most significant reduction, namely the creating indicator, followed by analysis and evaluation. During the pandemic, the implementation of HOTS-based learning takes place with various forms of adaptation. The difference in implementing HOTS-based learning lies in the frequency of implementing HOTS-based learning for each material and learning model used, and the learning steps. The results of this study can be used as input for science teachers to implement HOTS-based learning during the pandemic.
Optimization time and mass of eggshell adsorbent in improving waste cooking oil quality Sani Widyastuti Pratiwi; Srie Gustiani; Kenanga Triulfa Amadea; Ratna Nurmalasari; Inggis Pinarti
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3654

Abstract

Oxidation and hydrolysis damage to cooking oil can occur due to repeated use of cooking oil. Adsorption by utilizing eggshells, which contain high calcium carbonate and have a natural pore structure that can improve the quality of used cooking oil. This study aims to determine the physical properties and characteristics of the thermally activated chicken eggshell adsorbent and to determine the ability of the adsorbent to absorb acid and metal cadmium. The steps carried out in this study were the manufacture of adsorbents, quality tests of the adsorbents produced, and testing of adsorbents on used cooking oil samples based on acid numbers and decreasing levels of metal cadmium in the samples. The adsorption process of used cooking oil was carried out with variations in the mass of the adsorbent, namely 5, 7, 9, and 11 grams, and stirring time for 10, 20, 40, and 60 minutes. Based on the results of the study, it was found that the optimum conditions for decreasing the acid number with the use of an adsorbent mass of 11 grams and a stirring time of 60 minutes resulted in an acid number was 0.9974 mg NaOH/g with a decrease in the acid number of 76.54%, while for cadmium metal it decreased by 100% with adsorption capacity of 2.57124 mg/g.
Students perception of augmented reality learning media on solar system topics Muhammad Andika Putra; Erman Erman; Enny Susiyawati
Jurnal Pijar Mipa Vol. 17 No. 5 (2022): September 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.v17i5.3660

Abstract

The purpose of this study was to describe students' perceptions of augmented reality learning media in solar system topics. The type of research used was descriptive research. The participants involved in this study were 32 students from class 8C of State Junior High School 3 Sidoarjo, Indonesia. The instruments used consist of a student perception questionnaire and an interview. The questionnaire has been validated previously and consists of 5 questions about the concept of planets and the concept of the moon concerning augmented reality learning media. The results showed indicators 1, 4, and 6 obtained the highest score of 97%. It means that students can easily understand these indicators using augmented reality. Indicator 2 got the lowest result of 72%, meaning that students have little difficulty understanding the indicator using augmented reality but are still in the good category. As many as 87% of students rated that augmented reality learning media is very helpful in understanding the material of the solar system. Data from interviews with six students also support this result. They stated that augmented reality is the most effective learning media in studying solar system topics because students considered it more transparent, more interesting, more comfortable to use, and more accessible for students to understand. In conclusion, augmented reality learning media has proven to be effectively used in learning solar system topics. It also can be applied to other abstract science topics that are difficult for students to find in everyday life.

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