Jurnal Pendidikan Matematika dan IPA
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DEVELOPMENT OF BIOTECHNOLOGY LEARNING TOOLS BY UTILIZING THE LOCAL POTENTIAL OF CAMPEDAK SKIN TO IMPROVE THE SCIENCE PROCESSING SKILLS OF CLASS XII STUDENTS AT MA SABILARRASYAD SAMARINDA
Full text linkABSTRACTThis research aimed to produce Biotechnology learning tools by utilizing the local potential of cempedak peel to improve the science process skills of class XII students and determine its validity and effectiveness. This is development research that refers to Borg & Gall’s model modified by Sugiono. The trial subjects were students of class XII at Islamic Senior High Boarding School (Madrasah Aliyah) Sabilarrasyad Samarinda. Each of the product, control and field trial subjects consists of 20 students in each class. The research results were in the form of learning tools which include: a syllabus, lesson plan (RPP), student worksheet (LKPD), and assessment instruments. The results of this research showed that the learning tools that have been developed obtained validity with an average percentage of expert assessment of about 96.2% which fulfilled the very valid criteria, and has been proven to be effectively used in learning activities. Based on the T-test results, it can be seen that school learning tools are not similar (there is a significant difference) with the class taught by the researcher using the learning tools that have been developed. Further, it can also be seen from the improvement of students' learning by about 96% and in students' science process skills by 44%
APPLICATION MULTIPLEX PCR FOR EARLY DETECTION ESCHERICHIA COLI CONTAMINATION IN SOME DRINKING WATER RESOURCES IN ABEPURA, PAPUA INDONESIA
Full text linkAbstract Microbial detection takes a long time to produce positive results, so a quicker detection method was chosen. Multiplex polymerase chain reaction (m-PCR) identified bacterial strains in less than 24 hours, detects E.coli specifically, and is faster than traditional methods. The goal of this study was to use m-PCR to detect early pathogenic E.coli bacteria in several drinking water sources in the Abepura district of Papua Indonesia as a parameter of pollution and water quality. The Chelex100 and microwave combination method was used to extract DNA. The first round of testing was done at four different concentrations: 0.125, 0.250, 0.375, and 0.500 M. The purity of the extracted DNA was good, ranging from 1.80 to 1.94. The optimum primer concentration for multiplexing applications is 0.25 uM for lt primer; 0.125 uM for stx2 and eae primer, with an annealing temperature of 55oC. m-PCR has been shown to quickly detect pathogenic E. coli in water samples. In the PCR process, E.coli DNA template was obtained with high purity (1.80-1.94) and concentration (576.9-4301.6 ng/uL) . Each multiplex set included three primer pairs for the target gene lt-eae-stx2 on ETEC-EPEC and EHEC respectively. The m-PCR process showed excellent results, and this findings can be considered as a reference for water analysis in several drinking sources in Papua Province
META-ANALYSIS STUDY OF THE EFFECT OF GUIDED INQUIRY MODEL ON CRITICAL THINKING SKILLS OF STUDENTS SCIENCE CONCEPTS
Full text linkThe development of education in the 21st century requires educators and students to be able to improve critical thinking skills. The process of improving critical thinking skills requires a learning model, one of which is through a guided inquiry model. The application of the inquiry model is able to train students to have the ability to think about something new so that they can solve students' own concepts or ideas. The purpose of this study was to analyze the effect of the guided inquiry model on students' critical thinking skills. Data collection techniques were carried out by browsing various articles related to the inquiry model and critical thinking skills through Google, Google Scholar, and Scopus. The search results obtained 35 articles or related journals. Data analysis technique was carried out in a quantitative descriptive manner using the help of Microsoft Excel and JASP applications. The results showed that the results of the analysis using the random effect had a significant positive effect or correlation between the guided inquiry model on students' critical thinking skills in science lessons. The results of the egger test and fail safe N analysis show that there is no publication bias in the meta-analytical studies discussed, so that the analyzed meta-analytical studies can be scientifically justified
ENVIRONMENTAL LITERACY PROFILE OF STUDENTS IN NATURAL SCIENCE LEARNING-BASED EXPERIENTIAL
Full text linkThe issue of environmental damage has been widely discussed in recent years in various parts of the world. Environmental literacy is very necessary for the prevention of environmental problems and for creating a healthy environment. One effective model to improve environmental literacy in schools is Experiential Learning, which invites students to design actions to care for the environment and actively participate in providing solutions to environmental problems. This study aims to determine the environmental literacy profile of students at SMPN 4 Depok in experiential learning-based science learning. This research is a quantitative descriptive study with a cluster random sampling technique, namely 50 students of classes VIIA and VII C. The data collection instrument used was 7 environmental literacy description test questions developed from 4 environmental literacy indicators (knowledge, attitudes, skills, and behavior). Data analysis was carried out quantitatively by calculating the percentage to determine the category of students' environmental literacy. Based on the results of data analysis, it was found that the average achievement of the knowledge aspect was 86.2%; the attitude aspect is 65.5%; the skill aspect is 82.5%, and the behavioral aspect is 71.4%. The average of these results shows the level of environmental literacy is 76.4% which is included in the high category. After knowing the environmental literacy profile of students, it is necessary to develop research on interesting and innovative media in science learning so that the four stages of Experiential Learning can run more optimally
APPLICATION OF PROBLEM BASED LEARNING MODELS ON NATURAL SCIENCES TO IMPROVE MOTIVATION AND LEARNING OUTCOMES
Full text linkThe purpose of this study is to analyze the motivation and learning outcomes of science after applying the problem based learning (PBL) models. This research is a classroom action research (CAR) which was carried out in 2 cycles, each cycle using the PBL model. The research subjects were 32 students of class VIII E odd semester at SMP Negeri 3 Jombang. The data collection technique used a learning motivation questionnaire which was conducted preconditioning, post-cycle 1 and post-cycle 2, and data on student science learning outcomes obtained from the pretest conducted before PBL was applied and posttest after PBL. The data analysis technique used is descriptive quantitative analysis, analysis of the results of the questionnaire on learning motivation using a Likert scale and analysis of student learning outcomes using the paired sample T test using SPSS 20. The results of this study indicate the average precondition learning motivation is 56.40%, post cycle I 72.81% and post cycle II 83.73%. the increase in precondition-post-cycle I was 16.412% and the increase in post-cycle 1-post-cycle II was 10.918%. The results of the paired sample T test have a significant value of 0.000. This shows that learning using PBL can be effective in increasing students' motivation and learning outcomes in science learning
THE INFLUENCE OF PROBLEM-BASED LEARNING ON SCIENCE LITERACY ABILITY OF PHYSICS STUDENTS
Full text linkThis study aims to determine the effect of problem-based learning on the ability of physics science literacy at SMAN 4 Bengkulu City. The research was conducted in class XI IPA 2. The method used was a pre-experiment with a one group pretest-posttest design. The first stage is the assessment of the test in the form of a pretest (initial test) after which it is given the learning treatment using the problem-based learning model. The last step is given a final test in the form of a posttest. There is an influence on the results of hypothesis testing and the results of students' scientific literacy ability tests before being given treatment and after being given treatment. The test results were hypothesized using the help of SPSS software version 25 obtained H_0 was rejected and H_1 was accepted, using the problem based learning learning model on students' scientific literacy skills on the concept of material Elasticity and Hooke's Law seen from the test results which showed an average posttest result of 80.19% higher than the pretest average (48.52%). Based on the results of the hypothesis test, there is an effect of problem-based learning on the scientific literacy abilities of physics students at SMAN 4 Bengkulu City
BIBLIOMETRIC ANALYSIS OF MATHEMATICAL COMMUNICATION SKILLS USING SCOPUS DATABASE
Full text linkThe purpose of this study is to analyze how the development of research publication trends in mathematical communication skills in mathematics learning for the 2016-2021 period published in Scopus indexed scientific journals, review citation analysis, and examine trend analysis of terms or keywords by authors in journals and journals. The sample uses 142 article titles. Bibliometric analysis methods through quantitative studies are used to collect, process, and analyze data related to mathematical communication skills in mathematics learning. Data retrieval using PoP (Publish or Perish) software. Data analysis is descriptive quantitative. The results showed that the trend of scientific publications regarding the trend of mathematical communication skills increased from 2016-2021. It can be seen from the data that the number of articles published during 2019-2020 was the most researched on mathematical communication skills. The most cited articles related to mathematical communication skills occurred in 2019 with 97 citations. The Pisa question, communication technology, prospective mathematics teacher and self-efficacy are variables that are still rarely studied
ANALYSIS OF STUDENT ERRORS IN WORKING ON HOTS QUESTIONS FOR ALGEBRA MATERIALS ON WATSON’S CRITERIA BASED ON GENDER
Full text linkThis study aims to determine what errors students made in working on algebraic Higher Order Thinking Skill (HOTS) questions based on gender. This type of research method uses qualitative research methods. Data collection techniques in the form of essay test instruments, student interviews, and triangulation were used to test the validity of the data. This research was conducted on tenth-grade high school students in Jakarta by taking research subjects, namely those with high and low abilities. The results showed that the indicators of errors made by high-ability male students occurred in indicators of inaropriate procedures, errors other than the 7 criteria (not solving the problem), missing conclusions, and indirect manipulation. Meanwhile, women made mistakes on error indicators other than the 7 criteria (not solving the problem), incorrect procedures, and missing conclusions. As for the error indicator, the male student with low ability made an error on the error indicator other than the 7 criteria (not solving the problem), but the procedure indicator did not. Meanwhile, female students made mistakes on indicators other than the 7 criteria (not solving the problem), incorrect data, incorrect procedures, missing conclusions, indirect manipulation, and hierarchical problems
IMPLEMENTATION OF ANDROID-BASED INTERACTIVE MULTIMEDIA ON ATOM STRUCTURE MATERIALS ON LEARNING OUTCOMES AND STUDENT MOTIVATION
Full text linkThe purpose of this study was to determine the effect of implementing Android-based interactive multimedia on learning outcomes and student motivation at SMA Negeri 1 Binjai, Langkat Regency. The method used in this research is the descriptive quantitative research method. The data collection instruments used in this study were questionnaires (questionnaires) and tests. The data analysis technique used in this research is a quantitative descriptive analysis using the one-sample t-test formula and correlation test. The learning outcomes of students who are taught using Android-based interactive multimedia obtained by students are higher than the KKM value set at school, which is 75, with an average value of student learning outcomes of 86.91 and a sig. = 0.000 <0.05 from the results of the one-sample t-test conducted. The results of the student's motivation towards android-based interactive multimedia obtained an average percentage of 87.57 in the highly motivated category. Motivation and learning outcomes of students have a positive relationship with a very strong strength with the obtained Pearson Correlation value of 0.941 and a coefficient of determination of 88.5%
ANALYSIS OF DISEASE SEVERITY ON CITRUS LEAVES (CITRUS spp.) USING IMAGEJ AND PLANTIX SOFTWARE
Full text linkThe purpose of this case study is to determine the severity of citrus leaves using Plantix software and ImageJ software. Based on the results of this case study, it was found that the severity of the disease using ImageJ software was on citrus leaves at the first location (10.641%), citrus leaves at the second location (53.278%), and citrus leaves at the third location (15.828%) which were generally the fruit plants caused by fungi and based on the results of Plantix software data, diseases in the first, second, and third locations of citrus leaves were caused by bacterial diseases. Based on the results of bacterial cell culture, isolates were found to be round white in color with a slight yellowness which is a characteristic of Xanthomonas axonopodis bacteria with a large number of ±12 colonies and a smaller number of ±35 colonies. Using software and imageJ can help farmers to find out the types of pests that attack citrus plants so that farmers can handle plants to minimize damage to citrus plants caused by pests