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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.
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Articles 20 Documents
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Search results for , issue "Vol. 6 No. 2 (2020): July" : 20 Documents clear
The validity of Physical Learning Device Based on Discovery Learning Model Assisted by Virtual Laboratory Apriani, Ni Wayan Riska; Doyan, Aris; Sridana, Nyoman; Susilawati, Susilawati
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.413

Abstract

The purpose of this study was to determine the validity of physics learning devices based on discovery learning models assisted by virtual laboratories. This type of research is research and development that refers to the 4-D development model. The 4-D development model consists of four steps namely, defining, designing, developing and disseminating. Learning tools developed in the form of syllabi, lesson plans, student worksheets, and evaluation instruments. This article only focuses on the process of testing the validity of learning tools by experts. The results of the analysis of the validity and reliability state the learning device is categorized as valid and can be used in physics learning.
Implementation of ISO 6142- Gas Analysis - Preparation of Calibration Gas Mixtures - Gravimetric Method: Composition Determination and Uncertainty Estimation of Gas Reference Material Muhammad Rizky Mulyana; Harry Budiman; Oman Zuas
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.444

Abstract

Reference material plays an important role in determining the validity of measurement results based on SNI ISO/IEC 17025: 2017. In order to obtain a valid and accurate composition, the standard procedure for making gas reference material has been regulated in ISO 6142. Thus, this article will discuss in detail about the determination of the reference material composition along with its uncertainty based on ISO 6142. Starting with the results of a precise weighing, the concentration of each component of the gas reference material is determined gravimetrically and verified by analytical methods, one of which is gas chromatography (GC). The concentration uncertainty of each component is a combination of the contribution from repeatability of the weighing results, the uncertainty of the composition of the gas raw material, the molecular mass of the gas component, and the total uncertainty of the reference material verification. It is hoped that the detailed discussion in this article can improve the competence of stakeholders in the field of gas measurement in determining the composition of gas reference material concentrations and estimating uncertainty.
Colonisation Capacity of Vibrio sp. strain Alg 3.1 and Abn 1.2 in the Gastrointestinal Tractof Gnotobiotic Abalone Faturrahman Faturrahman; Iman Rusmana; Anja Meryandini
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.339

Abstract

The use of Vibrio strains as probiotics in Indonesia is very rarely reported. The purpose of this study is to select and develop Vibrio probiotic strains that can increase the rate of abalone growth. The ability of bacterial isolates to colonize the abalone digestive tract is one of the important parameters in the selection of probiotic candidates. The research method consisted of 3 main stages namely modification of Vibrio sp isolates to rifampicin mutants, manufacture of gnotobiotic abalone and colonization capacity test. The treatment given in the colonization capacity test is a type of bacteria that consists of Vibrio sp. line Abn1.2RfR, Alg3.1RfR, combination of Abn1.2RfR + Alg3.1RfR, and control without the addition of Vibrio sp. Each type of bacterial treatment was entered in a 10 liter aquarium capacity containing 10 abalone size ± 3.5 cm. Feed in the form of Gracilaria cake containing Vibrio sp. (final concentration of 107 cfu / mL) was given at the beginning of the study. Abalone is observed for 24, 48 and 72 hours without water replacement. Then count the total number of bacteria and the number of agarolytic bacteria. The results showed that the growth characteristics of wild-type Vibrio with mutant Vibrio were not different.Thus it is expected that the use of the two mutant isolates for in vivo testing has the same effectiveness as the wild type.The capacity of colonization of a single isolate or a combination of rifampicin mutant Vibrio continues to decrease with increasing time of observation. Nevertheless, the percentage of mixed isolates remained higher than that of single isolates during the observation time
Development of Student Worksheets Based on Comics to Improve Students' Motivation and Learning Outcomes on Material Vibration, Waves and Sound Niswatul Khaira; Yusrizal Yusrizal; Abdul Gani; Muhammad Syukri; Elisa Elisa; Evendi Evendi
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.424

Abstract

This research develops a comic-based student worksheet to learn about feasibility, learning outcomes, and motivation of the student worksheet. The research was carried out using research and development (R&D) methods with the ADDIE development model. The implementation of this comic-based Student Worksheet uses a pretest-posttest control group design. The population in this study were students of class VIII at MTsN 3 Banda Aceh. The samples in this study were 57 students in the class of Abu Bakar Ash Siddiq and Zaid bin Thabit who were selected by purposive sampling. Data collection using validation tests, written tests, and questionnaires. The results of the feasibility test showed that the Developed Student Worksheet was included in the feasible category with an average score of assessments by experts and natural science teachers of 91.25% and 99.03%. Analysis of learning outcomes data using the t-test, obtained tcount>ttable (4.42> 2.01) shows that there are differences in the value of student learning outcomes between the experimental and control classes where the value of the experimental class is higher than the control class. Results of analysis Motivation of students tcount>ttable (15,53> 2,01) also shows the use of comic-based worksheets can increase students' learning motivation so that it can be concluded that the use of comic-based worksheets is feasible, it can improve student learning outcomes and motivation
The Influence of Jigsaw Type Cooperative Models on Communication Skills of Elementary School Students Dini Maielfi; Sisri Wahyuni
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.431

Abstract

This research is motivated by the low student communication skills caused by 1) when learning, students have not been able to convey their ideas either when discussing with friends, presentations, or when solving problems in learning; 2) students are shy to ask questions, tend to be silent, and when learning takes place the attention of students is not focused on learning or the other person; 3) students who are less academic yet able to convey the essence of learning if asked to become a tutor. This study aims to determine the impact of jigsaw on the communication skills of fourth-grade students at SDN 22 Kuranji Padang. This type of research is Pre-Experimental Design. The results of this study were obtained µ1 <µ2, (67.66 <82.05), with a significance of N-Gain 0.45 in the medium category. Then Ha is accepted. From the results of this study, it was proven that jigsaw had a significant impact on the communication skills of fourth-grade students of SDN 22 Kuranji, Padang city
Mastery Concept of Harmonic Vibration with Meaningful Instructional Design Learning Model through Experimental Methods Mila Armiati; Ahmad Harjono; Susilawati Susilawati
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.353

Abstract

This research was aim to identify the effect of meaningful instructional design (MID) learning model through experimental methods on mastering the concept of harmonic vibration. This type of research was quasi experiment with nonequivalent control group design with pre-test and post-test. The population was all students class X MIA SMAN 7 Mataram in the academic year 2018/2019 with a purposive sampling technique. Class X MIA 4 was chosen as the experimental class with MID learning model through the experimental method and class X MIA 5 as the control class with conventional learning. Concept mastery data were analyzed using the polled variance t-test. The results of the analysis were tcount>ttable (4.39 > 2.00) at a significant level of 5% which means that Ha was accepted and H0 was rejected. Concluded that there was the effect of the meaningful instructional design (MID) learning model through the experimental method of mastering the concept of harmonic vibration
Development of Interactive Electronic Student Worksheets on Electromagnetic Induction Based on Scientific Approaches Rita Asma; Asrial Asrial; Maison Maison
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.387

Abstract

This study aims to develop an interactive electronic student worksheet (eLKS) on electromagnetic induction material with a scientific approach using 3D PageFlip, Camtasia Studio 8, and Adobe Flash Professional CS6. The research design used is a research & development design with instructional design procedures that refer to the ADDIE stage as a fundamental process in developing learning resources. The revision process is carried out through formative revisions based on data obtained from an individual, small group, and field trials. The results of the validator assessment of the validity of electronic student worksheet products were analyzed with the Cohen's Kappa formula and obtained k = 1.00 (valid) for the material and k = 0.89 (valid) for the media. The results of the implementation to 177 students and Level 1 evaluations showed that students had a good perception of the content and the media of eLKS. They also perceive that they are involved or participate in learning using eLKS. Level 2 evaluation results that use the independent-sample t-test method to compare the average scores of students who learn using eLKS and who don't use eLKS, show that there are significant score differences for learning with eLKS (M = 73.87, SD = 22.56) and learning does not use eLKS (M = 27.73, SD = 15.51); t (54) = 10.51, p = 0.00 (two-tailed). The difference in the mean value of 46 (95% confidence level) is large (eta squared = 0.58).
Effect of Red Bean Extract (Phaseolus vulgaris, L) on the Development of Female Mice Eggs (Mus musculus) Balb/C strains Miftahul Hasanah; Syamsul Bahri; I Wayan Merta
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.390

Abstract

Research was conducted to study the effect of red bean extract (Phaseolus vulgaris, L) on the development of mouse egg follicles (Mus musculus) This study used a completely randomized design consisting of 4 treatment groups. Each treatment group used 5 female mice aged 2 months weighing 18-22 grams. The research parameters were the number of egg follicles at various stages of development which were observed from the histological incision of the ovarium. The data obtained were analyzed by Two Way Variance Analysis and DMRT Test. The results showed that the treatment of red bean extract had a significant effect on the development of egg follicles in mice with balb/c strains
Antioxidant Activity of Fruit Extract Powder Beans (Phaseolus vulgaris L.) Using DPPH Method Rizki Nugrahani; Yayuk Andayani; Aliefman Hakim
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.409

Abstract

Free radical effect is one of many factors that can cause coronic desease, heart coronary desease, diabetes militus.  Beans plant (Phaseolus vulgaris L.) countant antioxidant compound. Antioxidants could inhibit oxidation reaction, that is cousing free radical compounds. The objective of this research was to determine the potential of bean extracts as an antioxidant. DPPH method was used to measure antioxidant activity, absorbances was measured using UV-Vis spectroscopy. Scrining phytochemical used to identified secondary metabolites in samples. The result showed IC50 1268.18; 2512; 1698.18 and 4442.75 μg/mL for all variety of stroge (less 1, 1, 2, 3 months) and IC50 control BHT was 1.744 μg/mL. Extract of bean powder sample classified as very weak antioxidant activity, variety of storage could effect to antioxidant activity. Phytochemical screening results obtained flavonoids, phenols, alkaloids, saponins, steroids and terpenoids present in the sample, while tannin are not included in the sample
Improving Critical Thinking Skill of Junior High School Students through Science Process Skills Based Learning Diego Pradana; Mohamad Nur; Nadi Suprapto
Jurnal Penelitian Pendidikan IPA Vol. 6 No. 2 (2020): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v6i2.428

Abstract

This study aimed to investigate impact the science process skill-based learning on critical thinking skills of Junior High School students. Subjects were eighth grade students of Rengel Junior High School 1 that were selected by purposive random sampling. Measurement data by means of science process skills test and critical thinking skill test was analyzed by using inferential statistical one-tailed t-test and linear regression. The results showed that implementation of science process skill-based learning was effective to improve the critical thinking skill of Junior High School student

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