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Jurnal Penelitian Pendidikan IPA (JPPIPA)
Published by Universitas Mataram
ISSN : 24602582     EISSN : 2407795X     DOI : -
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics
Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching in the field of science. The Science Educational Research Journal is published twice in a year in January and July editions. The editors receive writing in Indonesian or English, either from the university or from outside the university.
Arjuna Subject : -
Articles 6,421 Documents
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Isolation of Lipase from Candlenut Seeds and Its Immobilization in Polyacrylamide Gel Zella Yaumin Nasry; Nyoman Maya Krisnawati; Erin Ryantin Gunawan; Jannatin ‘Ardhuha; Agus Abhi Purwoko; Lalu Rudyat Telly Savalas
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1483

Abstract

In general, lipase enzymes are used in the form of free lipase enzymes which can only be used once and are less effective, so that their use is costly. Therefore, to maximize the use of the lipase enzyme, immobilization of the enzyme that allows multiple use is a choice. The purpose of this study was to determine the activity of the candlenut (Aleurites moluccana (L.) Wild) lipase in its free form and in immobilization form. The stability of the immobilized lipase enzyme with repeated use was also investigated. The enzyme was immobilized by trapping method using polyacrylamide gel. The immobilized lipase enzyme was characterized to determine its stability after repeated use with various gel concentrations. The crude extract of the lipase of candlenut seed sprouts had an activity of 2.32 U/mL, whereas the activity of the immobilized lipase enzyme in polyacrylamide gel at concentrations of 6%, 8%, and 10%, were 2.133; 2,259; and 2,311 U/mL, respectively. The optimum temperature for the immobilized lipase enzyme was 30 oC and the optimum pH was 7.5. After five time us usage, the immobilized enzyme showed activities of 49.49%, 72.60% and 86.53%, for 6%, 8% and 10% polyacrylamide gel, respectively. These results indicate that the immobilized lipase enzyme from seed sprouts of candlenut (Aleurites moluccana (L.) Wild) by trapping method using 10% polyacrylamide gel can maintain its stability after five times of use
Pre-Service Elementary Teacher in Global Warming and Environmental Health Issue: Attitude in Natural Science Learning Ilmi Zajuli Ichsan; Rika Sa'diyah; Nur Fadli Hazhar Fachrial; Ainur Rosyid; Rosa Susanti
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1485

Abstract

Pre-service elementary teachers’ attitude in supporting the achievement of the ecosystem and environmental balance is necessary to implement. Most global warming topic taught in natural science learning has yet to be based on environmental orientation. This research purpose was to analyze pre-service elementary teachers’ attitudes in preventing global warming and environmental health issue. The research uses a descriptive method with the data collection technique of the survey. The research samples include 239 students of the Department of Elementary Teacher Education in Jakarta, Bogor, Depok, Tangerang, Bekasi (Jabodetabek) area. These students are pre-service elementary teachers. Data analysis used is by comparing the average score of each item and indicator. The research result indicates that the average score for attitudes is 87.33 suggesting that the attitude score is relatively high. The attitudes, however, have not been fully implemented in the form of attitudes to prevent global warming and environmental health issue.  Natural science learning plays a prominent role in providing understanding related to global warming. The research results also recommend the application of more applicable lecture activities to the pre-service elementary teachers to improve the pre-service teacher attitude in natural science learning. The research concludes that the score of the pre-service elementary teachers’ attitudes is within a high category
Pengujian Validitas dan Reliabilitas Instrumen Konsepsi Pembelajaran Kimia pada Masa Pandemi COVID-19 Menggunakan Pemodelan Rasch Alusti Cundo Manik; Hari Sutrisno; Ifan Rivaldo
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1486

Abstract

This study aims to determine the validity and reliability of students' conception of chemistry learning instruments during the Covid-19 pandemic using Rasch modeling. The developed instrument consists of 24 items tested on 150 students from 3 selected schools classes X, XI, and XII MIPA State Senior High School in Tuban Regency for the 2021/2022 academic year. Two experts tested the content validity of the instrument while the construct validity and item reliability used the Rasch model with Winsteps Rasch software version 3.73. The analysis of the Rasch model used is in the form of item and person separation and reliability, correlation and point measure, Item fit, item rating scale functionality and unidimensionality. The results obtained indicate that the conceptual instrument for chemistry learning that has been developed is valid and reliable. However, the COLS4, COLS6, and COLS11 items are invalid and should be revised or removed
Meningkatkan Hasil Belajar Siswa melalui Pengembangan Perangkat Pembelajaran Berbasis Quantum Learning Pada Materi Hidrokarbon dan Minyak Bumi Muhammad Fakhrurrazi; Mohammad Masykuri; Sarwanto Sarwanto
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1495

Abstract

The study aims to develop a quantum learning-based learning instrument on hydrocarbon and petroleum; determine the feasibility of quantum learning-based learning instrument on hydrocarbon and petroleum, and determine the effectiveness of quantum learning-based learning instrument on hydrocarbon and petroleum to improve student's learning outcomes. This type of research is research and development (R&D) using the ADDIE model (analysis, design, development, implementation, and evaluation). The product developed consists of a syllabus, lesson plans, teaching materials, and assessment instruments. The validation results were analyzed using Aiken's validation obtained a validity coefficient of more than 0.80 or categorized as valid and suitable for use. The effectiveness test results were analyzed using SPSS22 obtained t-count > t-table, so it could conclude that quantum learning-based learning tools on hydrocarbon and petroleum materials were effective for improving student learning outcomes.
Analysis of the Application of Character Education in Genetic Engineering Materials Tomi Hidayat; Irwandi Irwandi; Nasral Nasral; Lely Yenita Asmara
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1499

Abstract

This study aims to analyze the application of character education in learning biology in Genetic Engineering material at State Senior High School 7 Bengkulu and see what efforts are being made by teachers and schools to instill such character education. This research is qualitative description research with 29 research subjects as grade XII students. The instrument used was in the form of a questionnaire and several interview questions. The results showed that the picture of biology learning character education in Genetic Engineering material in State Senior High School 7 Bengkulu had begun to be embedded but still needed guidance to be more focused on understanding the concepts, impacts, and application of genetic engineering techniques because teachers had not fully applied the teaching methods of character education in class. The picture can be seen in the observation data, questionnaires, and interviews of honest, disciplined, democratic, communicative, and creative values that have begun to develop. Caring, responsibility, and sociality are well entrenched. Independence is still very much needed to be considered while religious have begun to appear. In an effort to create character education attitudes that will be the basis for dealing with scientific and technological progress, the school has also implemented a number of support programs to improve or train character education attitudes
Reaksi Hidrorengkah n-Heksadeka Menggunakan Katalis Nikel-Zeolit Alam Serta Penentuan Energi Aktivasi (Ea) dan Orde Reaksi Ilham Salim; Yohanes B.J. Rusmanta; Jukwati Jukwati
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1514

Abstract

Research has been carried out on the preparation of active natural zeolite impregnated with nickel followed by activity testing through the hydrocracking catalytic reaction of n-Hexadecane. Active natural zeolite was obtained from PT Prima Zeolita Yogyakarta. The nickel concentration in the zeolite sample was carried out by ion exchange method with [Ni(NH3)6]2+ precursor solution with a concentration of 0.06M. The nickel content of the catalyst was determined by Atomic Absorption Spectrophotometer (AAS). The hydrocracking reaction used a fixed bed reactor system. Ratio of feed (n-Hexadecane) : catalyst = 3 : 1 (in gram). Catalysis study also carried out at various temperatures, from 315oC - 450oC at  certain nickel content.  The results of the catalytic reaction at each temperature after passing through the cooling system there was a liquid fraction that had been successfully accommodated then weighed and determined the percent of conversion. Furthermore, for the determination of Ea and the order of the reaction using linear regression calculations. The results showed that the catalytic reaction using an active natural Ni-Zeolite catalyst in the n-Hexadecane hydrocracking process resulted in different conversion results depending on the temperature of the catalytic reaction. The largest conversion was obtained at a temperature of 450oC, which was 35.18%. The reaction order was the first-order reaction (n=1). Meanwhile, the activation energy or activation energy (Ea) of the catalytic reaction in the n-Hexadecane hydrocracking process using a natural Ni-Natural zeolite catalyst with a nickel content of 2.0% (w/w) was 127.071 kJmol-1.
Implementation of Guided Discovery Learning Model with SETS Approach Assisted by Chemistry E-Module to Improve Creative Thinking Skills of Students Yerimadesi Yerimadesi; Yulia Asri Warlinda; Hardeli Hardeli; Andromeda Andromeda
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1522

Abstract

Creative thinking skills can train and develop thinking processes in finding new ideas and ideas to solve chemical problems and problems through discovery, exploration, experimentation, showing and demonstrating similarities, differences, and consistency. Therefore, it is necessary to update what has been learned, such as choosing the right strategy. This study aims to demonstrate the effect of implementing a guided discovery learning model using a SETS approach supported by the chemical Young's modulus on the creative thinking skills of students in the SMAN 1 Padang XI class. The method used was a quasi-experimental study with a randomized control group posttest-only design. The population of this study is all SMAN 1 Padang Class XI students enrolled in the 2021/2022 academic year, which includes 7 classes. A study population is grouped using random sampling techniques. The non-testing tools used were the Student Profile Assessment Form and the Creativity Assessment Criteria. The data analysis technique in this study was quantitative data analysis, testing hypotheses by using two unpaired samples in the mean similarity test analysis tcount> ttable. The result of the hypothesis test indicates that the research hypothesis is accepted. This means that the implementation of the Guided Discovery Learning Model using the SETS approach supported by the Electrochemistry module has had a significant impact on the creative thinking skills of students in Class XI at SMA 1 Negeri Padang
Analysis of Physical and Chemical Quality of PDAM Water in Teluk Ambon Baguala Sub-District Asry Nelannya Latupeirissa; Jolantje Latupeirissa
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1535

Abstract

A study has been carried out on the analysis of the physical and chemical quality of PDAM water in the Teluk Ambon Baguala sub-district. The purpose of this study was to analyze the physical and chemical quality of water from the Regional Drinking Water Company (PDAM) in Halong, Lateri, and Passo villages, including smell, taste, color, temperature, a total of dissolved solids (TDS), pH and hardness. The method used is the observation in the field at the time of sampling, then measurement and analysis in the laboratory. The results of the study indicate that the physical and chemical quality of PDAM water in the Teluk Ambon Baguala sub-district, which are smell, taste, color, total of dissolved solids (TDS), pH and hardness have met the drinking water quality standards according to the Regulation of the Minister of Health No. 492/Menkes/per/IV/2010.
Monitoring the Characteristics of High School Physics Learning Devices Refers to the 2013 Curriculum Content and Process Standards M. Ibnusaputra; Jumadi Jumadi
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1549

Abstract

This research is a qualitative research method with the type of document analysis and supported by interview studies. The purpose of this study is to describe the characteristics of high school physics learning tools that reach the content standards and process standards of Curriculum 2013. The documents analyzed are in the form of high school physics learning tools soft files from four teachers as respondents from different schools. The selection of the teachers was carried out by purposive sampling and the learning device data were analyzed descriptively. The research step begins by asking each teacher for the same type of learning tools, consisting of lesson plans, student’s worksheet, and instrument test for daily exams. Supporting step is an interview study with a semi-open model. The results of the data analysis of learning devices there are still 2 teachers who do not meet these types of learning tools, and only 1 teacher in the aspect of learning time allocation does not reach the standard process, which is only 30 minutes. Then generally each teacher is still not able to achieve aspects of the standard content, namely the achievement of basic competencies
Peningkatan Motivasi Belajar Melalui Penerapan E-Modul Fisika Berbasis Flipped Learning Yohana Atwina Aspiranti Ndoa; Jumadi Jumadi
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1556

Abstract

Face-to-face learning is being enforceable limitedly. To improve the quality of time in class, teachers can apply the flipped learning method. Flipped learning combines face-to-face in class with online learning. Physics e-module are acceptable as independent teaching material for students before participating in learning activities in class. The learning process in class gets used for discussion and practicum. This research implementation to know the application of physics e-modules based on flipped learning to increase students' learning motivation. This type of research is a pre-experimental type one-group pretest-posttest design. The samples were 16 students in class X Mathematics and Natural Sciences at Public Senior High School Wolowae. The data collection instruments used were questionnaire validation sheets and student learning motivation questionnaires. Based on data analysis, Asymp.Sig. (2-tailed) obtained is 0.00 < 0.05. Thus, there are differences in students' learning motivation before and after of physics e-module based on flipped learning. The increase of students' learning motivation with the acquisition N-Gain value was 0.64. This increase includes the medium category. The application of a physics e-module based on flipped learning in physics learning, especially the material of quantities and measurements, can increase the learning motivation of high school students in class X

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