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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
 66   67   68   69   70 
The effect of kebon kongok waste disposal sites on ground water quality in Suka Makmur Village, West Lombok District Tina Melinda; Taufik Abdullah; Dilla Rahmayanti
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5048

Abstract

The Kebon Kongok waste disposal sites (WDS), Suka Makmur Village, is the final waste disposal site for Mataram City and West Lombok because Mataram City does not have a WDS. The condition of the WDS has exceeded its capacity. Suka Makmur Village is a village close to the Kebon Kongok WDS. This research was conducted in Suka Makmur Village to know groundwater quality with Smell, Taste, TDS, pH, BOD, COD, Ammonia (NH3N), and Total Coliform. The method used to determine the quality of groundwater is by using the Pollution Index Method. In determining the sampling technique, the purposive sampling technique is used, a determination technique with certain considerations. The results showed that the results of the analysis of raw water samples with the parameters Odor, Taste, Total Dissolved Solid, pH, BOD, COD, Ammonia (NH3N), and Total Coliform. The results obtained from the three sample points that exceeded the Water Quality Standard threshold were only the Total Coliform parameter, sample 1 was 230 mg/l, sample 2 was 91 mg/l, and sample 3 was 230 mg/l based on the Regulation of the Minister of Health of the Republic of Indonesia Number 32 2017 concerning Environmental Health Quality Standards and Water Health Requirements for Sanitation Hygiene, Swimming Pools, Solus Per Aqua, and Public Baths. Based on the results of data analysis using the Pollution Index Method (IP), sample one was 3.14, sample two was 1.68, and sample three was 3.13. These results indicate that the condition of the water is included in the Light Polluted category based on the Decree of the State Minister for the Environment Number 115 of 2003 concerning Water Quality Status, the Pollution Index value with an IP score of 1.1 - 5.0 is intended for class I water.
Development of guided inquiry-oriented e-worksheets to improve students' science process skills in acid-base material Dini Catur Anisah; Harun Nasrudin
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5073

Abstract

This study aims to describe the feasibility of guided inquiry-oriented E-worksheets to improve students' science process skills on acid-base material. The research method is Research and Development (R&D), using the 4D development model, which is limited to the development stage and limited trials on 38 eleventh grades at Al-Islam Krian senior high school. The results showed the feasibility of E-worksheets as follows : (1) The validity of E-worksheets based on the criteria of content, presentation, language, and graphics, obtained the mode in E-worksheets 1 and E-worksheets 2, respectively: content criteria 5 and 5; presentation criteria 4.5 and 4.5; language criteria 4 and 4; graphic criteria 5 and 5 with valid and very valid categories, so that the developed E-worksheets are feasible based on the validity criteria. (2) The practicality of the E-worksheets is reviewed from the responses and activities of students. Learner responses based on content, presentation, language, and graphic criteria obtained a percentage of 96.42%; 96.70%; 99.12%; and 100% with a very practical category. Relevant learner activities at meeting 1 and meeting 2 received a percentage of 95.02% and 96.56% in the very practical category. (3) E-worksheets' effectiveness is based on improving science process skills. A normality test showed a significant score on the pretest and posttest of 0.004 and 0.000, respectively, so the significance < 0.05 showed that its data was not distributed normally. Furthermore, pretest and posttest data are analyzed using the Wilcoxon signed rank test, with a significance score of 0.000 < 0.05, showing a significant difference in pretest and posttest results. Data pretest and posttest then also analyze using N-gain with a score from 0.70 to 1.00 with a high category, so students' science process skills are said to increase. E-worksheets effectively improve science process skills.
Acute toxicity test of anthelmintic herbal on Artemia salina larvae I Ketut Devananda Wicaksana; Kamelia Roiyan; Dinatul Aini; Syauzatta Amani; Widya Wulandari; Muhammad Abdurrahman Fardiaz; Raisya Hasina
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.v18i5.5094

Abstract

Jamu X is a traditional medicine that is believed to provide anti-inflammatory effects, contains natural ingredients such as Curcuma xanthorrhiza Robx and Curcuma aeruginaosa Robx, has long been used to treat worm infections in children, but it has not passed preclinical tests. The use of traditional medicine in Indonesia has also increased to 44.3%, 55.3% in liquid form, and the rest in powder form. Therefore, this study aimed to determine the potential acute toxicity of Jamu X to Artemia salina larvae presented as its    Furthermore, to determine the damaged parts of the larval organs using the Brine Shrimp Lethality Test (BSLT) method. This experimental study used 10000, 1000, 100, 10, 1, and 0.1 ppm, and each concentration contained 10 Artemia salina larvae. Then, we obtained the upper limit of 10,000 and the lower limit of 1000. In the following test, the larvae were grouped into six groups consisting of 10 Artemia salina larvae, and each group was given Jamu "X" solution with a series of concentrations 10000, 7820, 5640, .168, 1780, and 1000 ppm. Mortality data of Artemia salina larvae were analyzed by probit analysis to determine the value of   . The results of this study showed the   value was 1548.81 µg/mL, and damage was found in the thorax, antennae, antennule, stigma, and abdomen. It shows that Jamu X does not have the potential for acute toxicity or is non-toxic, which is indicated by the value of   > 1000 ppm.
Development of student worksheets green chemistry oriented to train creative thinking skills on reaction rate topic Amelia Wulandari; Mitarlis Mitarlis
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5100

Abstract

This study aims to produce student worksheets with green chemistry oriented to train creative thinking skills in matter with reaction rate proper. The green chemistry principles studied in this research are limited to 1, 5, and 12. The research development method uses a 4-D model (define, design, develop, and disseminate) and is limited to the development stage. Limited trials were conducted on 35 students in class XI IPA 1 senior high school. The development of student worksheets is feasible if it fulfills three aspects, including aspects of validity, practicality, and effectiveness. It is declared valid if it gets a minimum mode value of 3 from the range of values ​​1-5 and is declared practical and effective if the proportion results are ≥ 61%. The results of the development of student worksheets mean that the feasibility of student worksheets in terms of theoretical validity consists of several things, namely content criteria that obtain a mode value of 5, linguistic criteria obtain a mode value of 5, presentation features obtain a mode value of 5, graphical criteria obtain a mode value 4, green chemistry scoring gets a mode value of 5, and criteria for creative thinking skills gets a mode value of 5. The practicality of student worksheets is seen from the student response questionnaire, which is supported by observations of student activities and the implementation of learning, each of which obtains very practical results with an average proportion of 94.64%, 94.5%, and 98.21%. The aspect of effectiveness is viewed from the results of the creative thinking ability test, which obtained 0.85, which is in the high category. Based on the results of validity, practicality, and effectiveness, it can be interpreted that the student worksheets developed are declared feasible for use in the teaching and learning process.
Bacteriological analysis of air quality in the community settlement around waste disposal sites Kebon Kongok, West Lombok Nurhidayah Nurhidayah; Mulhidin Mulhidin; Nurhidayatullah Nurhidayatullah
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5104

Abstract

This study aimed to determine the air quality in the community settlements around the Kebon Kongok Dusun Landfill, Suka Makmur Village, West Lombok Regency. The type of research used was an experiment using NA media as a growth medium for bacteria at 3 points passed by garbage trucks in community settlements and 1 point not passed by garbage trucks in the Kebon Kongok landfill area, Suka Makmur Village. Air quality in residential communities around the waste disposal sites (WDS) Suka Makmur Village does not meet the requirements based on the Minister of Health Regulation number 1077 of 2011 concerning the requirements for biological contaminants, namely the germ count of less than 700 CFU/m3. The air quality index is lower than the other points, namely at Point I of 3,779 CFU/m3, because Point I is a sampling location far from garbage trucks going to the TPA. The highest results in this study were obtained at Point IV, which was 6,933 CFU/m3; this was estimated because the sampling location was in a community settlement which was less than 50 meters from the Kebon Kongok TPA gate with active trucks and heavy equipment activity in the TPA. Microscopic observation obtained gram-positive bacteria at all points.
Development of handouts on acid-base material with the sorogan learning method Siska Widiana Putri; Rinaningsih Rinaningsih
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5151

Abstract

The Sorogan learning method is individual learning with the activities of students giving their learning outcomes (strong) to the teacher. This study aims to determine the feasibility of handouts in improving students' mastery of concepts in acid-base material using the developed Sorogan learning method in terms of validity, practicality, and effectiveness. The research for developing this handout refers to the Research & Development (R&D) development method, which is limited to the limited trial stage. Handout validity consists of content and construct validity. Content validity gets mode 5 with very valid criteria. Construct validity includes graphical, presentation, and linguistic criteria. Graphic criteria get mode 5 with very valid criteria, presentation criteria get mode 4 with valid criteria, and linguistic criteria get mode 4 with valid criteria. The practicality of the handout is seen from the results of observing the activities of the students by obtaining a percentage of 95.71% and the student response questionnaire in terms of the criteria for content, graphics, presentation, and language, getting a percentage respectively 98.33%, 96.67%, 97, 77%, and 100% with very practical criteria. The effectiveness of the handout is seen from the increase in pretest to posttest scores for each student using the N-Gain Score formula, and a value of <g> 0.8 is obtained, or it can be said to increase by 80% with high criteria. Classical completeness gets a percentage of 100% with very effective criteria. It shows that using handouts with the Sorogan learning method in acid-base chemistry learning can improve students' mastery of concepts and learning outcomes. The handout on acid-base material using the Sorogan learning method was declared feasible because it met the validity, practicality, and effectiveness criteria.
The effect of the generative learning model on the student critical thinking ability in environmental conservation topic Fairuz Mumtaz; Sjaifuddin Sjaifuddin; Adi Nestiadi
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5152

Abstract

The low level of students' critical thinking ability makes students need help understanding science concepts. The application of an interactive learning model can be a solution to this problem. This research aims to analyze the effect of the Generative learning model on the critical thinking ability of 7th graders in Environmental conservation Materials. The research method used is the Quasy Experiment method carried out in class VII junior high school SMP Mutiara Insani Tangerang. Students' critical thinking abilities are measured by a written test instrument in the form of essay questions made according to indicators of critical thinking ability that have been adjusted as many as ten questions tested for validity and reliability. The selected experimental class comes from a population that is normally distributed, has a homogeneous variance, and has the same mean. The research results show that the experimental class with the Generative Learning model and the control class with the Discovery Learning model are normally distributed. Hypothesis testing is done by t-test, and the significance level is based on the results of the Posttest; there is a significant influence of the Generative Learning learning model on the critical thinking ability of class VII students. In conclusion, the Generative Learning Learning Model affects the Critical Thinking Ability of 7th graders Students in Environmental Conservation material.
Student worksheets with virtual laboratory to train science literacy in acid-base learning Yulisa Dwi Anggraeni; Achmad Lutfi
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5155

Abstract

This study aimed to obtain Student Worksheets suitable for training students' scientific literacy. This research includes research and development. The research procedure carried out to develop this teaching material refers to the steps of the ADDIE model but is only carried out until the development stage and limited trials are carried out. The problem was carried out in one class that was randomly selected. Feasibility was tested based on validity, practicality, and effectiveness. An expert validator carries out the validity, and a score is determined using the mode. Validity results obtained a score of 4 with a very valid category on student worksheets 1 and 2. The results of the practicality analysis were viewed from the effects of student responses and observations of student activities. A practicality percentage of 90%-100% was obtained in the very practical category, then the results of observations of students' activities with relevant activities at meeting 1 amounted to 97.04%, and at meeting two amounted to 98.03%. From the two activity percentages, the relevant activity percentage obtained ≥ 61%, so it can be said that student worksheets are very practical. The results of the analysis of the effectiveness of student worksheets were measured based on the results of scientific literacy ability scores, which were analyzed using the t-test and obtained a significance value of 0.000 so that the developed student worksheets were said to be effective. Based on the results of the validation, practicality, and effectiveness analysis, it was found that the student worksheet with a virtual laboratory to train scientific literacy that was developed was feasible to use.
Development of electronic worksheets based on project-based learning assisted by a virtual laboratory to train students' critical thinking skills Dwi Wilujeng Fattikasari; Harun Nasrudin
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5162

Abstract

This research aims to explain the validity, practicality, and efficacy of electronic worksheets based on Project Based Learning assisted by a virtual laboratory to train students' critical thinking skills on the sub-material of factors that affect the reaction rate. The 4D development model (Define, Design, Develop, Disseminate) is used, limited to the development stage. The results of electronic worksheets validation on content validity and construct validity obtained a score with a mode of 5 for the four electronic worksheets, so the electronic worksheets developed were categorized as very valid. In the electronic worksheets practicality test on student activity observation outcomes, the relevant activity outcomes were 93.89% for meeting 1, 94.44% for meeting 2, 92.22% for meeting 3, and 93,33% for meeting 4. According to the learner response questionnaire results, the share was 91.24%, and the developed electronic worksheets were classified as very practical. The electronic worksheets efficacy test on the pretest and posttest results found that the classical completeness was 0% but increased to 83.33% in the posttest. The Wilcoxon test results showed a significant difference between the pretest and posttest scores, confirming his acquisition of an N-Gain score in the high category, so the developed electronic worksheets met the efficacy criteria.
Development of assessment for learning-oriented electronic student worksheets to improve student learning outcomes on acid-base titration material Afiqa Azra Amanina; Muchlis Muchlis
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 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.v18i4.5188

Abstract

This study aims to describe the feasibility of an Electronic Student Worksheet-oriented assessment for learning to improve the learning outcomes of class XI students of SMAN 1 Menganti Gresik, Indonesia, on acid-base titration material. The feasibility of the Electronic Student Worksheet developed is reviewed based on three aspects: validity, practicality, and effectiveness. This study used a Research and Development (R&D) method development design that refers to the Borg and Gall research and development model. This research was limited to the limited trial stage. The little trial was conducted on 18 SMAN 1 Menganti Gresik students who had received acid-base titration material. The feasibility of the Electronic Student Worksheet was reviewed from the validity aspect obtained based on the assessment results by the validator, which consisted of two chemistry lecturers from FMIPA Surabaya State University and one chemistry teacher from SMAN 1 Menganti Gresik. Validation by experts related to content validity and construct validity obtained a mode of 5 with a highly valid category. Practicality in students' responses by getting a positive reaction of 97.22% with a very practical category and observation of students' activities as supporting data which obtained more excellent students' relevant activities with an average percentage at the first meeting and the second meeting of 95%. Effectiveness in terms of the results of students' cognitive learning tests which have increased with the percentage of students who get N-gain in high criteria by 11%, while the percentage of students who get N-gain in medium criteria is 83%, and the percentage of students who get N-gain in low criteria is 6%. In the second meeting, the rate of students who got N-gain in high criteria increased by 89%, while the percentage of students who got N-gain in moderate criteria was 11%.

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