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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
 64   65   66   67   68 
Increasing science process skills using inquiry learning model Ifa Aulia; Astrid Sri Wahyuni Sumah; Marlina Ummas Genisa
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4850

Abstract

The teacher is a facilitator in determining learning objectives to improve the learning process, and students can actively conduct discussions andseek their own experiences. However, teachers must still implement learning models and science process skills in biology lessons so that learning becomes monotonous. Before carrying out science process skills in learning at school, the teacher must first know the profile of students' science process skills (SPS) so that they can support science process skills following the conditions of students. This study aimed to improve students' science process skills by applying inquiry learning models to biotechnology material in class XII IPA 1 MA Aisyiyah Palembang. The research method used was classroom action research by applying an inquiry learning model consisting of 2 cycles with six meetings, with three in each cycle. The subjects of this study were students of class XII IPA 1 MA Aisyiyah Palembang, with a total of 18 students. The results of the study found an increase in students' SPS scores. Cycle 1 basic skills (89.96%) increased in cycle 2 (96.29%), cycle one process skills (90.43%) increased in cycle 2 (94.13%), and investigative skills in cycle 1 (46.29%) also increased in cycle 2 (86.10%). The findings prove that applying the inquiry learning model can increase students' science process skills.
Analysis of cadmium heavy metal content in rice snail (Pila ampullacea) from Rawa Taliwang Lake Indra Wulan; Khairuddin Khairuddin; Muhammad Yamin
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4862

Abstract

Snails are one of the aquatic organisms that can be used as biological indicators of heavy metals in water. This study aims to determine the amount of cadmium heavy metal content in rice snails (Pila ampullacea) from Rawa Taliwang Lake, which can be used to enrich lecture material on environmental knowledge and to determine the feasibility of consumption of rice snails (Pila ampullacea) in accordance with the threshold of heavy metal contamination in food. The research was conducted over ten months, from August 2022-June 2023, at Rawa Taliwang Lake. Data were collected using the purposive sampling method at two research stations, namely the East and West sides. The samples in this study were four rice snails caught using a net. The samples were then deconstructed and analyzed using Atomic Absorption Spectrophotometry (AAS). The rice snail body parts studied were the flesh cleaned and separated from the shell and internal organs. The analysis showed that the average cadmium (Cd) heavy metal content in the flesh of rice snails (Pila ampullacea) from Rawa Taliwang Lake was 0.19 mg/kg, which means that it is suitable for consumption because it is below the maximum threshold of cadmium (Cd) contamination allowed in gastropods which are 0.30 mg/kg according to the Food and Drug Administration Regulation No. 9 of 2022.
Effect of guided discovery learning model based on lesson study learning community on the chemistry of main group elements topics Miftahul Jannah; Dita Yumarni Lase; Yolanda Putri; Nofrianto Nofrianto; Lydia Aryani; Andromeda Andromeda
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4865

Abstract

According to the students of senior high school SMAN 14 Padang, chemistry is one of the most challenging subjects. It causes the learning process in the classroom to be teacher-centered. Therefore, a suitable learning model is needed so that students are active in finding information to create student-centered learning. One of the appropriate learning models used is Guided Discovery learning with the lesson study learning community LSLC learning system. This study aims to determine the effect of the guided discovery learning model based on LSLC on the chemistry of main group elements on student learning outcomes at SMAN 14 Padang. The type of research used is a quasi-experiment. In this study, two classes were used, namely the experimental and control classes, with a simple random sampling technique. In the experimental class XII MIPA 2, the special treatment was applying a Guided discovery learning model based on LSLC on the chemistry of the main group elements. In the control class XII MIPA 3 without LSLC based. The data analysis techniques used were the N-Gain test, normality test, homogeneity test, hypothesis test, and hypothesis testing with t-test. The results showed that in the experimental class, there was an increase in student learning outcomes in the moderate category with an average N-Gain value of 0,6999. In the control class, the average value was 0,6168. It also shows that in the control class, there is an increase in student learning outcomes in the moderate category. The results of data analysis with the normality test and homogeneity test that have been carried out obtained that the data is normally distributed and homogeneous, so hypothesis testing is carried out with the t-test. The learning outcomes of students who apply the guided discovery learning model based on LSLC can be significantly improved than those without LSLC based on the main group element chemical material at SMAN 14 Padang.
Digital science magazine based on contextual learning on the polluted river topic Saptiyah Saptiyah; Lukman Nulhakim; Dwi Indah Suryani
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4867

Abstract

This research is driven by the need for more utilization of opportunities for technological advances in the field of education, one of which is the creativity of educators in creating and using a learning media, resulting in less efficient learning implementation. digital science magazine (DSM) can be an alternative to interesting learning media that utilizes technology well. This study aims to determine DSM's validity and student attractiveness based on contextual learning on the theme of my polluted river. The method applied is Research and Development along with the ADDIE model (Analysis, Design, Development, Implement, and Evaluate). Material experts, media experts, and expert practitioners completed the validation assessment. At the same time, the assessment of attractiveness was carried out by students using student response questionnaires. Overall from the experts, the developed DSM obtained a validity level of 88.4% which is categorized as very valid. Based on the research, DSM, based on contextual learning developed, has a good level of validity and attractiveness so that it can be used in learning at school or independently at home by junior high school students.
Antioxidants in the extract of balinese salak rind (Salacca amboinensis (Becc) Mogea) as an alternative substance to decrease blood sugar levels among Mus musculus L. with hyperglycemia Ida Ayu Manik Damayanti; Ni Wayan Sukma Antari; Sri Dewi Megayanti; Kadek Buja Harditya; I Made Bayu Jaya Kusuma; Ni Wayan Kesari Dharmapatni
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4889

Abstract

This study aims to determine the antioxidant potential of Balinese salak rind extract (Salacca amboinensis (Becc) Mogea) (BSRE) as an antihyperglycemic agent in male white mice with hyperglycemia. The research was conducted in three stages extraction of Balinese salak rind using 96% ethanol, phytochemical screening, and antihyperglycemic activity testing. Mice were hyperglycemia induced by alloxan. Mice were divided into five groups consisting of negative control (Aquadest), positive control (Glibenclamide 13 mg/Kg BW), dose 1 (200 mg BSRE/kg BW), dose 2 (400 mg BSRE/kg BW), dose 3 (600 mg BSRE/kg BW). Phytochemical screening showed that the BSRE was positive for containing alkaloids, flavonoids, tannins, saponins, and steroids. The analysis results on the BSRE showed an IC50 value of 81,76 ppm, including strong antioxidant activity. The activity of blood glucose levels showed that BSRE could decrease blood glucose levels of Mus musculus L. with hyperglycemia.
Ecotourism: A practical guide of Megapodius reinwardt for prospective teacher Muhammad Yamin; A. Wahab Jufri; Alifman Hakim; Gunawan Gunawan; AA Sukarso
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4917

Abstract

Learning activities can be carried out in or outside the classroom. Learning outside the classroom, such as field observations, is an excellent learning activity. This paper discusses the development of a field observation practicum guide for bird bioecology Megapodius reinwardt. The goal is to develop and assess the feasibility of the developed practical guide, the process of scientific literacy, and the critical thinking skills of prospective biology teacher students through three stages: define, design, and develop. Data collection through observation, interviews, questionnaires, tests, and documentation. The data obtained were analyzed by descriptive quantitative. An average of 77% obtained the results of the practical guide validation, which means worthy. The process of scientific literacy of prospective biology teacher students, on average, obtains a good predicate. User response is positive, so it is suitable for use as a bioecological Field Observation Guide Megapodius reinwardt for the literacy process scientific and thinks student critical biology teacher candidate.
Analysis of the structure and content of the merdeka curriculum on green chemistry materials Real Fandi; Faizah Qurrata Aini; Zonalia Fitriza
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4920

Abstract

This research aims to describe the compatibility between the structure and content of Merdeka’s curriculum on green chemistry based on the revised Bloom's Taxonomy, Dave and Dyers' Taxonomy, and chemistry textbooks. This research is descriptive with a qualitative approach with a content structure analysis research design derived from the Model of Educational Reconstruction (MER). The data collection technique was carried out based on a literature study, while the data analysis technique was carried out based on the Milles and Huberman data analysis technique. The instruments used were standard content analysis tables and structural analysis tables. The standard content analysis table was prepared according to the revised Bloom's and Dave and Dyers' taxonomy. The content structure analysis table measures the breadth of the material, guided by the senior high school textbook from the Ministry of Education and Culture, and the depth of the material is guided by the Handbook of Green Chemistry and Technology by James Clark & Duncan Macquarrie. The research results obtained  (1) Elements of chemical understanding were following the revised Bloom taxonomy, (2) Elements of process skills only dominated abstract skills, (3) Elements of the Pancasila student profile contained abstract skills and the realm of attitude. Whereas in content analysis, (1) the breadth of material on the learning outcomes of green chemistry is by high school books from the Ministry of Education and Culture, (2) the depth of material contained in high school chemistry textbooks published by the Ministry of Education and Culture has not explained in more detail less in presenting the questions, and some material is was not suitable to be placed for phase E high school based on the Merdeka’s curriculum.
Suitable technology for a household scale workshop systems for the treatment of wastewater Azwarudin Azwarudin; Hijriati Sholehah; Diano Karno; Muhamad Majdi
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4927

Abstract

One of the causes of water pollution is the presence of workshop activities. Gasoline residue from washing spare parts and washing hands after repairing and maintaining motor vehicles can harm the surrounding environment, namely water pollution. This study aims to determine the efficiency of reducing the levels of pH, BOD, COD, TSS, oil and grease, Ammonia, and total coliform in wastewater from Astra workshop operations using three treatment and treatment units in the piping section and to determine the design of wastewater treatment tanks for operation astra workshop. Based on the preliminary test results, the waste from Astra workshop activities had a pH content of 7.2, a BOD content of 2.9 mg/l, a COD content of 58 mg/l, a TSS content of 2.45 mg/l, an oil and fat content of 8.702 mg/l, the ammonia content was 0.027 mg/l. The total coliform content was 2000 MPN/ml. Of these values, there is one parameter that does not meet the quality standards according to the Decree of the Minister of Environment and Forestry No. 68 of  2016 concerning Domestic Waste Quality Standards, namely a pH concentration of 6-9, a maximum level of BOD of 30 mg/l, a maximum level of COD of 100 mg/l, a maximum level of TSS of 30 mg/l, a maximum concentration of oils and fats allowed 5 mg/l, maximum ammonia concentration of 10 mg/l, and maximum permitted total coliform content of 3000 MPN/ml. This workshop liquid waste treatment uses three treatment and treatment units in the piping section with one filtration media, which is carried out in duplicate to anticipate and minimize the possibility of errors that can occur during the process. Efficiency in reducing parameters in liquid waste from Astra workshop operations using filtration media and treatment in the piping section can reduce the pH concentration by -15.29%, from an initial concentration of 7.2 to 8.5, TSS by 59.18% from an initial concentration of 2.45 mg/l to 1 mg /l. BOD was 72.41% from an initial concentration of 2.9 mg/l to 0.8 mg/l. COD was 65.51% from an initial concentration of 58 mg/l to 20 mg/l. Fatty oil was 45.41% from an initial concentration of 8,702 mg/l to 4.75 mg/l. Ammonia by 48.14% from the initial concentration of 0.027 mg/l to 0.014 mg/l, and Total Coliform by 100% from 2000 MPN/ml to 0 MPN/ml.
Correlation in biological literacy and critical thinking skills of science students through problem-based learning model integrated by macromedia flash Anindita SHM Kusuma
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4928

Abstract

Biological literacy and critical thinking skills are two abilities students studying biology must possess. This study aimed to determine the correlation between biological literacy skills and critical thinking skills of class XI Science at Senior High School 1 Aikmel Through the Problem-Based Learning model integrated by Macromedia Flash. The research method is correlational research. The sample in this research were students of class XI Science 1 and XI Science 3 at Senior High School I Aikmel. The data analysis used in this study is a simple linear regression analysis. The results showed a relationship between biological literacy skills and critical thinking skills of class XI Science at Senior High School 1 Aikmel Through the Problem-Based Learning model integrated by Macromedia Flash. The value of the correlation coefficient (r) of biological literacy with critical thinking skills is 0.712 (high). The direct relationship between biological literacy and critical thinking skills is positive. The coefficient of determination (r2) is 50.8%. The regression line equation for the relationship between biological literacy and students' critical thinking skills in learning using the Problem-Based Learning model with Macromedia Flash is Y =43.847+0.568X.
Betel leaf extract as an anti-bacterial agent in solid soap formulation and characterisation Rima Wulandari; Ika Kusuma Nugraheni; Mariatul Kiptiah
Jurnal Pijar Mipa Vol. 18 No. 3 (2023): May 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.v18i3.4940

Abstract

Used cooking oil is a waste oil derived from plants used as cooking oil. Used cooking oil can be reused by a purification process and used in soap making by a saponification process using a base (KOH or NaOH). Based on this, waste cooking oil is handled as a raw material for making solid soap. This study aimed to characterize solid soap from used cooking oil with betel leaf extract and explain the anti-bacterial ability of solid soap from used cooking oil with betel leaf extract. Solid soap is made by purifying used cooking oil by immersion in 15% NaOH and adding bleaching earth, making betel leaf extract by maceration method. The process of making solid soap with the addition of stearic acid, propylene glycol, glycerin, ethanol, and TEA. Characterization of solid soap by testing water content, amount of fatty acid, free alkaline, free fatty acid, mineral oil, foam stability, acidity test (pH), and anti-bacterial test. Testing the water content and the number of fatty acids shows that all samples did not meet the standards required by SNI 06-3532-1994. All samples in the free alkaline test (except sample F0), free fatty acids, mineral oil, and foam stability were tested to meet the standards required by SNI 06-3532-1994, and the anti-bacterial test of sample F4 has the best anti-bacterial properties because it can reduce the growth of bacteria compared to other samples.

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