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Students’ Analogical Reasoning Errors in Solving Mathematical Analogy Problems: Differences in Abstract Sequential Thinking Styles
No full textStudents’ ability to construct analogical thinking is an important skill in solving mathematical problems, as it allows them map knowledge from familiar mathematical concepts to new mathematical concepts. Unfortunately, many students make errors in constructing analogies, especially when faced with abstract and complex problems. Individuals with an abstract sequential thinking style, known for their ability to analyze ideas and describe logical sequences are interesting subjects for research on how they solve mathematical analogy problems and what types of analogical reasoning errors emerge during the process. Therefore, this study aims to identify and analyze analogical reasoning errors made by students with an abstract sequential thinking style when solving mathematical analogy problems. This descriptive qualitative research was analyzed using the Miles and Huberman model. The research subjects were Grade 10 senior high school students. Based on the thinking style questionnaire, 31 students with an abstract sequential thinking style were identified from 183 subjects, from which two students were selected as samples. Based on the analysis of the two research subjects, it was found that students with an abstract sequential thinking style experienced analogical reasoning errors at the Applying stage, in the form of errors in the use and construction of concepts. Both subjects also completed the inferring stage before returning to the encoding stage of the target problem
Effect of Ginger on Primary Dysmenorrhea
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Menstruation is an effect of the destruction of the endometrium. Menstrual disorders that often occur are dysmenorrhea. Dysmenorrhea is a gynecological disorder due to the instability of the hormone progesterone in the blood, resulting in pain and often occurs in women. Dysmenorrhea is abdominal pain that comes from uterine cramps and occurs during menstruation. This menstrual pain occurs periodically on menstrual days. Menstrual pain is the most common problem in adolescent and adult women. Menstrual disorders as a health problem for women not only affect reproductive health, but also psychological health and quality of life. Menstrual pain during primary dysmenorrhea is an inconvenience for women around the world that can cause difficulty in carrying out daily life activities. This paper aims to explore the literature on the non pharmacological benefits of natural herbs used to relieve primary dysmenorrhea pain. Previous studies have shown that ginger is very effective in relieving primary dysmenorrhea menstrual pain.
Keywords: Ginger, Dysmenorrhea, Natural herbs, menstrual pain
Enhancing Students’ Chemical Representation Ability Through Problem-Based Learning Assisted by Nearpod on Electrolysis Cell Material
Get PDFThis study aims to show an increase in students’ chemical representation ability through the integration of Problem-Based Learning (PBL) assisted by Nearpod on electrolysis cell material and describe student activities and their ability to complete worksheets. This study used a pre-experimental method with a one group pretest-posttest design and involved second-semester students in the basic Chemistry 2 courses. The results showed that the improvement in chemical representation ability was in the medium category (N-Gain: 0.68), learning activities were carried out very good (88.86%), and the student’s ability to complete worksheets was also classified as high (average score: 89.52). These findings indicate that integrating PBL assisted by Nearpod is an effective, innovative approach to improving students’ chemical representation ability, particularly in abstract electrolysis cell material, by encouraging active participation and conceptual understanding
Analysis of students\u27 learning interests through the use of visual learning media with a problem-based learning model in science lessons for class IV SDN 95/II Muara Bungo
Get PDFThe background of this research is that the learning conditions of students appear less conducive, many students appear unenthusiastic in participating in lessons. They often make noise, daydream, sleep in class and even fight with each other. The teacher who teaches has difficulty attracting their attention, because most students are more interested in playing than studying. In addition, the teacher rarely uses media and learning models when teaching, he only often uses the lecture method, so that students are easily bored and uninterested in participating in learning. This can be evidenced by the lack of student interest in participating in learning and low learning outcomes, and resulting in learning objectives not being achieved. With these various factors, students\u27 interest in learning at the school is low, which has an impact on their less than satisfactory academic achievement. This study used a qualitative descriptive research method. The results of this study, namely the application of visual learning media (images) combined with the Problem Based Learning (PBL) model effectively increased student learning interest in science learning. This improvement was seen in five main aspects: students showed a feeling of enjoyment while learning, were more active and involved in learning activities, had a high interest in the material, paid more attention when the teacher delivered the material, and had a strong desire to learn
Development of Geoheritage-based Media Education for Sustainable Development to Improve Ecoliteracy in Elementary Schools
Get PDFThe lack of students\u27 ecoliteracy skills due to the absence of appropriate Education for Sustainable Development (ESD)-based learning materials is a significant problem that must be addressed immediately by educators. This study aims to develop and test the feasibility and effectiveness of using ESD-based learning media, in the form of e-modules, to cover the essential material on ecosystems and environmental change. The type of research used is research and development (R&D), with a sequence of potential and problem analysis, data collection, product design, design validation, design revision, product trial, product revision, usage trial, and mass production. Data were collected through tests (pretest and posttest), interviews, observations, and questionnaires. Data analysis employed both descriptive statistics and parametric inferential statistics. The study\u27s results showed that, based on media expert assessments, the level of media feasibility was in the very feasible category, with a score of 92%. Similarly, based on material expert assessments, it was also categorized as very feasible, with a score of 94%. The level of significance obtained was 0.004 on a small scale and 0.00 on a large scale, indicating a statistically significant difference. It can be concluded that the e-module on the Geoheritage of Semarang City has been successfully developed as a sustainable development education medium that is both feasible and effective for use as a learning tool in Elementary Schools. This research product can serve as a learning medium and can be followed up on for further research.The lack of students\u27 ecoliteracy skills due to the absence of appropriate Education for Sustainable Development (ESD)-based learning materials is a significant problem that must be addressed immediately by educators. This study aims to develop and test the feasibility and effectiveness of using ESD-based learning media, in the form of e-modules, to cover the essential material on ecosystems and environmental change. The type of research used is research and development (R&D), with a sequence of potential and problem analysis, data collection, product design, design validation, design revision, product trial, product revision, usage trial, and mass production. Data were collected through tests (pretest and posttest), interviews, observations, and questionnaires. Data analysis employed both descriptive statistics and parametric inferential statistics. The study\u27s results showed that, based on media expert assessments, the level of media feasibility was in the very feasible category, with a score of 92%. Similarly, based on material expert assessments, it was also categorized as very feasible, with a score of 94%. The level of significance obtained was 0.004 on a small scale and 0.00 on a large scale, indicating a statistically significant difference. It can be concluded that the e-module on the Geoheritage of Semarang City has been successfully developed as a sustainable development education medium that is both feasible and effective for use as a learning tool in Elementary Schools. This research product can serve as a learning medium and can be followed up on for further research
PENERAPAN METODE STIMULASI PIJAT ENDORFIN, OKSITOSIN, DAN SUGESTIF (SPEOS) UNTUK PENINGKATAN PRODUKSI ASI PADA IBU POST SECTIO CAESAREA DI RSUD BUDHI ASIH JAKARTA: APPLICATION OF THE ENDORPHIN, OXYTOCIN, ANDSUGESTIVE MASSAGE STIMULATION (SPEOS) METHOD FORINCREASING ASI PRODUCTION IN MOTHERS POSTCAESAREA SECTIO AT RSUD BUDHI ASIH JAKARTA
Get PDFPersalinan dengan metode sectio caesarea merupakan prosedur bedah yang dilakukan untuk melahirkan bayi. Sebagian ibu yang menjalani operasi ini mengalami keterlambatan dalam pengeluaran ASI, yang berdampak pada munculnya kecemasan dan menghambat produksi hormon prolaktin serta oksitosin. Salah satu cara nonfarmakologis untuk mengatasi hambatan ini adalah dengan terapi pijat SPEOS. Metode SPEOS (Stimulasi Pijat Endorfin, Oksitosin, dan Sugestif) bertujuan merangsang produksi oksitosin melalui pijatan yang memicu hormon endorfin dan oksitosin serta memberikan efek sugestif yang memperkuat rasa percaya diri ibu dalam menyusui. Tujuan dari studi kasus ini adalah untuk memberikan asuhan keperawatan kepada pasien pasca sectio caesarea yang mengalami gangguan menyusui dengan intervensi pijat SPEOS. Pendekatan studi menggunakan metode deskriptif berdasarkan proses keperawatan melalui wawancara, observasi, pemeriksaan fisik, serta kuesioner produksi ASI dengan melibatkan dua responden. Hasil menunjukkan bahwa masalah menyusui pada kedua responden dapat diatasi pada hari kedua intervensi. Dengan demikian, pijat SPEOS terbukti efektif dalam meningkatkan produksi ASI pada ibu pasca sectio caesarea yang mengalami hambatan menyusui
BARITO RENEWABLE ENERGY (BREN) AND THE FTSE INDEX: A CASE STUDY ON GLOBAL CLIMATE FINANCE\u27S DIRECTION
Get PDFThe exclusion of Barito Renewables Energy (BREN), Indonesia\u27s largest renewable energy company, from the FTSE Global All Cap Index has highlighted critical gaps in global climate finance and the role of index providers in shaping investment flows. This exclusion resulted in significant market volatility, reflecting the influence of major index providers like FTSE Russell, MSCI, and S&P Dow Jones on emerging markets. BREN\u27s focus on geothermal energy underscores its importance in Indonesia\u27s renewable energy transition, contributing to nearly 40% of the national renewable energy targets. However, the lack of transparency in FTSE’s exclusion criteria raises concerns about equitable access to global finance for developing nations. This paper explores the implications of BREN’s exclusion, the broader issues in ESG investment, and the potential for a revised anthropocentric International Relations theory to drive sustainable economic growth in Indonesia. The study employs a qualitative research methodology, drawing on primary data from Bursa Efek Indonesia (BEI), FTSE Russell, and PT Barito Renewables Energy Tbk (BREN), as well as secondary data from financial reports, media analysis, and market research. The findings reveal the inconsistencies in FTSE’s screening process, raising questions about transparency and the potential for arbitrary decision-making that disproportionately affects emerging markets. Additionally, the exclusion underscores the broader misalignment between global index criteria and the sustainability efforts of developing nations.
Key words: Barito Renewables Energy (BREN), FTSE Global All Cap Index, global climate finance, Indonesia clean energy, index providers
STEM (Science, Technology, Engineering, and Mathematics) Instructional Analysis Towards Learning Competencies Achievement as Reviewed from Vocational Education Students’ Critical Thinking
Get PDFA proper instructional process is a process that is designed to meet the expected educational goals; hence, an innovative strategy in the learning process is required. One of the instructional models appropriate for use in teaching vocational lesson material is the STEM model. The aim of this study was to analyze the level of usefulness of the STEM model on the learning competencies achievement of vocational students’ in Kupang as reviewed from their critical thinking, with a focus on the materials about automotive engine components maintenance and reparation. The method of this study was a pre-experimental in the form of one group pretest post-test. The subjects studied were twenty-six Light Vehicle Engineering students of Class X Group B of 2022/2023. The data collection techniques used in this study were documentation and 20-question item test sheets implemented in the pre-test and post-test. The data were analyzed with a T-test using SPSS version 29. The descriptive test results showed a significant difference between the means of tests, which was of 23% proving that the STEM model significantly improved students\u27 critical thinking skills. Therefore, it is recommended that the STEM approach be used as an alternative model for teaching engineering subjects
Increasing Students\u27 Critical Thinking Ability with the Teams Games Tournament (TGT) Learning Model
Get PDFThis inquire about points to survey the affect of executing the Groups Recreations Competition learning demonstrate on numerical issue fathoming abilities in lesson VII understudies at MTs Tarbiyah Islamiyah Ulumahuam. Employing a quantitative approach with a pre-experimental inquire about plan of the One Gather Pretest-Posttest sort, this inquire about included 27 understudies as a test from the lesson VII populace. Based on information investigation, the normal pretest score gotten was 38.00, whereas in treatment, the posttest score experienced a critical increment with an normal of 85.33. The measurable test comes about appear a t-count esteem of 5.55 which is more noteworthy than the t-table of 2.04 at a importance level of 0.01, expressing that there\u27s a critical impact of the TGT demonstrate on students\u27 numerical issue understanding capacities. The application of the TGT show has demonstrated to be successful in moving forward students\u27 capacities since it can increment center, imagination and collaboration in fathoming scientific issues. By utilizing this model, understudies are more effectively included within the learning prepare, which closes in a significant increment in science learning results.
Keywords: Mathematical Critical Thinking Ability, Teams Games Tournament (TGT) Model
Potensi Antioksidan Rumput Kebar (Biophytum Umbraculum) dengan Metode 2.2-Diphenyl-1-Picrylhydrazyl (DPPH) dan Ferric Reducing Antioxidant Power (FRAP)
Get PDFOxidative stress is one of the causes of heart disease, atherosclerosis, and cancer. Efforts to overcome oxidative stress include the use of natural antioxidants. Flavonoids and phenolics are secondary metabolite compounds in plants that have antioxidant activity. Plants that are believed to be able to overcome oxidative stress include Kebar grass. Kebar grass (Biophytum umbraculum) is one of the plants that empirically has many benefits including as a female fertility drug by the Kebar-Papua community. The study aimed to determine the antioxidant potential and total phenolic and flavonoid content of Kebar grass extract. Kebar grass extract was obtained through maceration extraction with 96% pro-analysis (p.a) ethanol solvent. Antioxidant testing used the 2.2-diphenyll-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) methods using antioxidant standards, namely ascorbic acid (vitamin C) and gallic acid, while measuring total phenolic and flavonoid levels used the Folin-Ciocalteu and aluminium chloride methods, respectively. The results showed that the total phenolic and flavonoid levels of Kebar grass extract were 52.26 ± 3.94 mg GAE/g dw (dry weight) and 22.15 ± 2.79 mg QE/g dw Kebar grass extract, respectively, while the antioxidants of Kebar grass extract with the DPPH method had an inhibition concentration 50 (IC50) value of 183.44 ppm and a vitamin C standard of 4.46 ppm, and antioxidant testing using the FRAP method obtained a reducing power 50 (RP50) value of Kebar grass extract of 5043.76 ppm with a gallic acid standard value of 101.8 ppm.Oxidative stress is one of the causes of heart disease, atherosclerosis, and cancer. Efforts to overcome oxidative stress include the use of natural antioxidants. Flavonoids and phenolics are secondary metabolite compounds in plants that have antioxidant activity. Plants that are believed to be able to overcome oxidative stress include Kebar grass. Kebar grass (Biophytum umbraculum) is one of the plants that empirically has many benefits including as a female fertility drug by the Kebar-Papua community. The study aimed to determine the antioxidant potential and total phenolic and flavonoid content of Kebar grass extract. Kebar grass extract was obtained through maceration extraction with 96% pro-analysis (p.a) ethanol solvent. Antioxidant testing used the 2.2-diphenyll-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) methods using antioxidant standards, namely ascorbic acid (vitamin C) and gallic acid, while measuring total phenolic and flavonoid levels used the Folin-Ciocalteu and aluminium chloride methods, respectively. The results showed that the total phenolic and flavonoid levels of Kebar grass extract were 52.26 ± 3.94 mg GAE/g dw (dry weight) and 22.15 ± 2.79 mg QE/g dw Kebar grass extract, respectively, while the antioxidants of Kebar grass extract with the DPPH method had an inhibition concentration 50 (IC50) value of 183.44 ppm and a vitamin C standard of 4.46 ppm, and antioxidant testing using the FRAP method obtained a reducing power 50 (RP50) value of Kebar grass extract of 5043.76 ppm with a gallic acid standard value of 101.8 ppm