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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) WAPFI (Wahana Pendidikan Fisika) Jurnal Pengajaran MIPA JURNAL FISIKA Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI PENA SAINS Journal of Teaching and Learning Physics Jurnal Inovasi dan Pembelajaran Fisika Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Pendidikan Fisika Momentum: Physics Education Journal Indonesian Journal of Science and Mathematics Education Journal of Science Learning Jurnal Pendidikan Fisika dan Keilmuan (JPFK) PENDIPA Journal of Science Education Jurnal Kajian Peradaban Islam Silampari Jurnal Pendidikan Ilmu Fisika Indonesian Review of Physics (IRiP) Physics Education Research Journal Didaktika: Jurnal Kependidikan Jurnal Kajian Peradaban Islam INSECTA: Integrative Science Education and Teaching Activity Journal Indonesian Journal of Multidiciplinary Research (IJoMR) Indonesian Journal of Teaching in Science Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Pendikdas: Jurnal Pendidikan Dasar JSEP (Journal of Science Education and Practice) Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Proceeding Seminar Nasional IPA JIPI (Jurnal IPA dan Pembelajaran IPA) International Journal of Renewable Energy Development Symbiotic: Journal of Biological Education and Science Journal of Environment and Sustainability Education Journal of Innovative Science Education Jurnal Pendidikan IPA Indonesia Jurnal Pendidikan MIPA JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Pendidikan Fisika Indonesia IJIS Edu : Indonesian Journal of Integrated Science Education
Eka Cahya Prima
Universitas Pendidikan Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Pengujian Efikasi Antimikroba Ekoenzim terhadap Staphylococcus aureus dan Escherichia coli sebagai Aktivitas Partisipatif Siswa dalam Materi Bioteknologi untuk Pengelolaan Limbah Makanan Fina Nurul Arifah; Eka Cahya Prima
Symbiotic: Journal of Biological Education and Science Vol. 6 No. 1 (2025): Symbiotic: Journal of Biological Education and Science Vol. 6 No. 1 April 2025
Publisher : Institut Agama Islam Negeri Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/symbiotic.v6i1.156

Abstract

This study investigates the antimicrobial efficacy of eco-enzymes derived from organic waste, specifically fruit and vegetable peels, against Escherichia coli and Staphylococcus aureus bacteria. Eco-enzymes were produced through a simple fermentation process involving kitchen scraps, brown sugar, and water. Antibacterial activity was evaluated using agar diffusion assays, where different concentrations of eco-enzymes were tested against bacterial cultures. Results showed significant inhibition zones, indicating effective antimicrobial properties against both bacterial strains. Higher concentrations of eco-enzymes correlated with larger inhibition zones, highlighting their potential as natural alternatives for bacterial control in various applications, including food processing and wastewater treatment. Furthermore, eco-enzymes contribute to sustainable organic waste management by converting waste into useful bio-sanitizers, floor cleaners, bio-pesticides, and plant fertilizers. This research underscores the dual benefits of eco-enzymes in reducing environmental impact and promoting sustainable development goals.
Natural pigment-based dye-sensitized solar cells utilizing Caulerpa racemose and Gymnogongrus flabelliformis as photosensitizers Unwakoly, Semuel; Liliasari, Liliasari; Hartati, Sri; Munawaroh, Heli Siti H; Arramel, Arramel; Rusliani, Prima Fitri; Prima, Eka Cahya
International Journal of Renewable Energy Development Vol 14, No 3 (2025): May 2025
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.61083

Abstract

This research examines natural dyes' chemical and physical characteristics for potential use in dye-sensitized solar cells (DSSCs). Chlorophyll pigments were extracted from two macroalgae species, Caulerpa racemosa and Gymnogongrus flabelliformis, and analyzed using absorbance spectroscopy, band gap energy calculations, and dye-sensitized solar cell performance evaluation. Fourier Transform Infrared (FTIR) characterisation was used to identify the pigments contained in the dye. The absorbance spectra of chlorophyll pigments extracted from both macroalgae species showed broad peaks at 400–800 nm wavelengths, with Gymnogongrus flabelliformis showing the highest absorbance peak at 403 nm. The redox potential analysis for both macroalgae species showed energy gaps (HOMO/LUMO) of 1.3 eV, 1.4 eV, 2.3 eV, and 2.4 eV, respectively, indicating that these natural dyes are suitable for use in DSSC applications. DSSC devices were fabricated using components such as liquid electrolyte, mesoporous titanium dioxide (TiO₂) photoelectrode, reduced graphene oxide (rGO) as counter electrode, and ITO glass as conductive substrate. Meanwhile, to evaluate how well the photovoltaic system worked, we looked at short-circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF), and overall photoelectric conversion efficiency (η). The results showed that the highest performance for Gymnogongrus flabelliformis was Jsc 0.041 mA/cm², Voc 0.28 V, FF 0.239, and η 0.020%, while the highest performance of Caulerpa racemosa was Jsc 0.023 mA/cm², Voc 0.46 V, FF 0.244, and η 0.019%. These findings indicate the potential for using and developing natural dyes derived from these two macroalgae species in DSSC technology. This research offers insight into the feasibility of marine-derived pigments as a sustainable and environmentally friendly alternative for photovoltaic applications.
Measurement of Sound Speed Using a Frequency Generator-assisted Resonance Tube for STEM-based Learning Nurpratiwi, Febrianty; Hernani, Hernani; Prima, Eka Cahya; Septiyanto, Arifin
Jurnal Pendidikan Matematika dan Sains Vol. 13 No. 2 (2025): December 2025
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v13i2.86417

Abstract

This study investigates the measurement of the speed of sound in air using a resonance tube assisted by a smartphone-based frequency generator, designed to support STEM-based learning. The experiment follows a quantitative approach, with the length of the air column as the independent variable and the speed of sound as the dependent variable. Control frequencies of 495 Hz, 755 Hz, 1010 Hz, 1270 Hz, and 1530 Hz were generated via a mobile application. Resonance points were identified by observing the peak sound intensity using a digital sound level meter, which indicated the formation of standing waves. The results showed a strong linear relationship between wavelength (λ) and wave period (T), with regression equations λ = 347.62T + 0.0098 (open pipe) and λ = 361.59T − 0.0176 (closed pipe), each with a correlation coefficient of R = 0.99. At room temperature (24.4°C), the measured speed of sound was (347.6 ± 0.2) m/s for the open pipe and (361.6 ± 0.1) m/s for the closed pipe. These results demonstrate that low-cost, smartphone-assisted setups can produce accurate, reliable data. This method enhances student engagement and understanding of acoustic phenomena, providing an accessible and effective model for implementing hands-on STEM-based learning in physics education.
The correlation of student’s motivation and self-concept: A case study in science learning Kurniawan, Luthfiyah Azzahra; Rahmat, Adi; Winarno, Nanang; Prima, Eka Cahya
Journal of Environment and Sustainability Education Vol. 3 No. 2 (2025)
Publisher : Education and Development Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62672/joease.v3i2.75

Abstract

Although the relationship between student motivation, self-perception, and achievement in science education is well established, there is still a lack of focused studies on these aspects at the lower secondary level, particularly in private school settings where student demographics and learning environments may pose unique challenges. The purpose of this study is to: (1) assess lower secondary students' motivation and self-concept in scientific learning; and (2), using correlational analysis and qualitative feedback, determine ways to improve these aspects. Using a quantitative descriptive survey design, this study assessed 60 grade 7-9 students from a private lower secondary school. The Students’ Motivation Toward Science Learning (SMTSL) and adapted Chemistry Self-Concept Inventory (CSCI) measured motivation and self-concept, respectively. Data analysis included mean scores for both variables and Spearman’s rank correlation (accounting for Liker-scale ordinality and non-normal distributions). A moderate-high level of motivation (Active learning strategies [ALS]=4.0-4.1 highest, Performance Goal [PG]=2.8-3.1 lowest) and self-concept (Positive Perception of Science Self Concept [PSSC]=3.8-3.9 highest, Mathematic Self-Concept [MSC]=2.9-3.2 lowest) with moderate positive correlation (r = 0.572, p < 0.001) underscores that self-concept and motivation are interrelated, suggests interventions should simultaneously promote active learning (to enhance ALS) while addressing mathematical confidence (to improve MSC). These findings suggest that teachers can boost engagement through active learning and confidence-building strategies, while school and policymakers should design targete interventions to support students with low scientific confidence and high performance pressure.
IoT-MQTT Protocol-Based Water Sensor System to Monitor Citarum River Water Quality using Arduino Uno R4 Wifi Saputra, Winata Tegar; Prima, Eka Cahya; Fajar, Muhammad Cahyana Bintang; Rozi, Muhammad Fahru; Destanto, Nady Artan; Hadjar, Azzahra Siti; Amadudin, Muhamad Nur Yasin; Ashidiq, Rizki Maulana
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Vol. 9 No. 1 (2025)
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/eltikom.v9i1.1335

Abstract

River water quality is critical for sustaining life, necessitating advanced monitoring technologies. This study presents a novel IoT-based water monitoring system using the Arduino Uno R4 WiFi and the MQTT protocol, offering significant improvements in real-time data acquisition, reliability, and accessibility. Unlike conventional systems, this approach uniquely integrates advanced microcontroller capabilities and efficient data transmission to address limitations in accuracy and usability in water quality monitoring. The system measures key indicators, including pH, temperature, total dissolved solids (TDS), and turbidity, and provides real-time updates via a solar-powered web interface. Using an exploratory sequential design, the study developed, calibrated, and tested the system, achieving high accuracy with relative errors of 2.50% for pH, 4.15% for temperature, 4.73% for TDS, and 3.08% for turbidity. Feedback from 59 residents near the Citarum River underscores the system's effectiveness and societal relevance, highlighting its potential to enhance public health, support sustainable environmental management, and set a new standard in water monitoring technology.
Analysis of the Viscosity Value of Packaged Oil with Bulk Oil Using Tracker Video Analysis Budiman, Budiman; Prima, Eka Cahya; Riandi, Riandi; Suwarma, Irma Rahma
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 12 No 2 (2023): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v12i2.15174

Abstract

The utilization of STEM-based technology is essential for activating students in learning. One of the media that can be used in STEM-based learning is the Analysis Video Tracker. Analysis Video Tracker is an application used to analyze speed, velocity, acceleration, force, gravitational field, conversion, and energy conservation. This study used the Video Tracker Analysis application, which aims to observe the effect of object mass in measuring viscosity. Second, to assess the viscosity values between bulk oil and packaged oil. Finally, to examine the reliability of data generated by video tracker analysis application. The research method used in this study is an experimental method of analyzing video recordings of the motion of falling objects into a liquid with Tracker Software version 6.1.0. This research data was analyzed through the Analysis Video Tracker application, excel, and SPSS version 25. The results of the research in this article. First, the mass of the object used to measure affects viscosity time (s), distance traveled (cm), speed (cm/s), and acceleration (cm/s2). Secondly, the viscosity value of bulk oil is higher (3.978 Nm/s2) than packaged oil (3.124 Nm/s2). Third, the data obtained from the video tracker analysis application is reliable or consistent. The results of this research are expected to serve as a reference and alternative in using learning media, especially on the topic of viscosity, and to become a reference in selecting oils for food processing.
Design of a Microcontroller-based Hydrostatic Pressure Experiment Tool in Science Education Angjelina, Putri; Prima, Eka Cahya; Riandi, Riandi; Anwar, Sjaeful
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 12 No 1 (2023): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v12i1.15177

Abstract

This study aims to create a microcontroller-based hydrostatic pressure experiment tool in science education. The digital system makes the tools used more effective and time-efficient. The digital system used in this tool consists of a microcontroller, digital display (LCD), and the MS5637 Barometer sensor. This series of tools processes digital data into hydrostatic pressure, displayed on the LCD. The method used in this study is following Archimedes' principle. The independent variable in this study is the depth of the funnel thrust into the measuring cup, while the dependent variable is the hydrostatic pressure displayed on the LCD. The results showed that the hydrostatic pressure valuesobtained were close to theoretical calculations. Then, the r-squared result between Δh of water and hydrostatic pressure through experiments with a microcontroller (Arduino) is 0.9981. This value is good enough to show the proportion or percentage of hydrostatic pressure affected by Δh of water. Thus, experiments using this tool are quite effective in science learning.
Web-Based Inquiry in Science Learning: Bibliometric Analysis Dewi, Pramita Sylvia; Widodo, Ari; Rochintaniawati, Diana; Prima, Eka Cahya
Indonesian Journal of Science and Mathematics Education Vol. 4 No. 2 (2021): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijsme.v4i2.9576

Abstract

Web-based inquiry is an intermediary medium that supports broad sharing of data and ideas, in visualizing, analyzing, and offering knowledge integration. This study aims to analyze the scope of scientific research related to web-based inquiry using bibliometric studies starting from the last 10 years. Database information is obtained from Scopus indexed papers, via the Publish or Perish application. Based on the search and selection results, 65 articles were obtained which were then reviewed with Zotero and processed with the VOS viewer. The analysis used is based on the title area, according to web-based inquiry in supporting science education research. Overall, this study provides information regarding research opportunities in science learning with web-based inquiry, especially during this pandemic. This research also illustrates the publication opportunities in various countries that have a high interest in the topic of inquiry. The mapping of the bibliometric results also supports the scientific explanation between the theory and the evidence of probability. Therefore, the literature is expected to be a reference for further science research.
How Far are Students’ Science Thinking in Inquiry Learning? Dewi, Pramita Sylvia; Widodo, Ari; Rochintaniawati, Diana; Prima, Eka Cahya
Indonesian Journal of Science and Mathematics Education Vol. 6 No. 1 (2023): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijsme.v6i1.13741

Abstract

This study aims to identify science learning activities for junior high school students. The research design is descriptive and quantitative. The sample in this study was 38 students, and the questions tested consisted of 28 items analyzed by Rasch analysis. Question items are correct if students can answer questions according to their guided inquiry abilities. The results showed that almost all samples could not participate in science learning using guided inquiry. Of the 28 questions tested on students, only three had a score above 50%, and the rest were almost, on average, below 50%. It can be concluded that students have yet to realize that guided inquiry is the essence of science learning, which helps them conduct and develop science learning in the classroom. This study recommends the application of guided inquiry to students to be able to harmonize thinking in science learning in junior high school.
The Development of Web-Based Learning using Interactive Media for Science Learning on Levers in Human Body Topic Astuti, Lia; Wihardi, Yaya; Rochintaniawati, Diana; Prima, Eka Cahya
Journal of Science Learning Vol 3, No 2 (2020): Journal of Science Learning
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jsl.v3i2.19366

Abstract

Integrated curriculum is a popular way to develop 21st-century skills, but most of the materials are written on the books separately. Furthermore, web-based learning is an online learning media that can be accessed using an internet connection anytime and anywhere. However, many educational websites do not apply the principles of effective learning. Besides, the traditional learning methods tend to be bored for the students. In order to solve this problem, this study designed a website education that uses interactive content to assist students in learning levers in the human body topic as one of the integrated science materials. The process of developing an educational website consists of three steps: (1) analysis, (2) design, (3) construction making. This research method used descriptive method, and the experts' judgment will evaluate it on content, language, and media/IT. The questionnaires used the technology acceptance model (TAM) and five-dimensional interactivity to investigate the readability of the subjects' perception responses. The research subject was three science teachers and 31 students on private Junior High School in Bandung. According to the result, generally, it has a good evaluation of each aspect. But, the website education needs a strong signal to access for not taking load time consumer.
Co-Authors 'Ain, Khaula Noorul A Z Y Muntaz A. Suhandi Abi Sofyan Adhara Jasid Adi Rahmat Agus Fany Chandra Wijaya, Agus Fany Chandra Agus Setiabudi Ahmad Sugiana Ahmad, Nur Jahan Ainun Jariah Aldia Ridwani Putri Amadudin, Muhamad Nur Yasin Amri, Muhammad Fahriza Andhy Setiawan Anggun Zuhaida, Anggun Angjelina, Putri Anisa Rahmawati Ari Widodo Ari Widodo Arifah, Fina Nurul Arramel, Arramel Ashidiq, Rizki Maulana Astuti, Lia Azhari Ebeid Abu elreish Budiatin, Aniek Setiya Chun-Yen Chang Destanto, Nady Artan Diah Wahyuni Dian Regita Cahyani Diana Rochintaniawati Duden Saepuzaman, Duden Dwiyanti, Ulfa E. Suhendi Ekarani, Putri Eliyawati , E. Eliyawati Eliyawati Endi Suhendi F Muslihah Fadzil, Hidayah Mohd Fahmi Amhar Fajar, Muhammad Cahyana Bintang Fajarwati, Andini Fajri, Nurullina Farhan Farhan Fathurrohman, Irfan Febrian Virijai Fina Nurul Arifah G S A Muharam Hadjar, Azzahra Siti Hanifa, Husna Hasanah Purnama, Aisyah Nurul Herdianto, Nendar HERNANI - Ida Kaniawati Inandang, Siska Handayani Irfan Fathurrohman Isnawati Isnawati Kurniawan, Luthfiyah Azzahra L A Kurniawan Labibah, Haura Laelandi, Rahayu Lestari, Nimas Ayu Liliasari , Lilik Hasanah Lilit Rusyati Lutianasari, Lia M F Ulfi Meilisyah Putri Utami Melati, Putri Sekar Mellyzar, Mellyzar Mohamad, Maslawati Mr Amprasto Mr Sjaeful Anwar Muamar, Aina Salsabila Muhamad Gina Nugraha Muhammad Nurul Hana Muharam, Ghevira Syaharani Aulia Muji Pangesti Prihandini Mukti, Rizka Nurfarida Munawaroh, Heli Siti H Muslim Muslim Nabilah, Shofa Nahadi Nanang Winarno Naufal Rabah Wahidin Nuraeni Kamdi Nurahman, Arip Nurjannah Hanum Mahmudah Siagian Nurpratiwi, Febrianty Nurul Azizah Al Mar&#039;ati Nuryani Rustaman Pramita Sylvia Dewi Putri Angjelina Putri Sekar Melati R. Riandi, R. Rastiadi, Hasna Aisyah Ratna Ekawati Renika, Jelita Riandi Riandi Riandi Riandi Riandi Riandi Riandi Riandi Ridwan Ridwan Rika Rafikah Agustin Rini Solihat Riski Muliyani Riski Muliyani, Riski Risnawati, Ika Rizki Maulana Ashidiq Rozi, Muhammad Fahru Rusliani, Prima Fitri Saeful Karim Sahidin Sahidin Salma Almira Hamdani Salsabilla, Adinda Saputra, Winata Tegar Selly Feranie Semuel Unwakoly Septiyanto, Arifin Setiya Utari Setiya Utari Sholahudin, Nabila Putri Sihombing, Dewa Alvario Sinaga, Lastama Siti Sriyati Siti Sriyati Sjaeful Anwar Sri Astuti Sri Hartati Sumardani, Nur Ichsan Taj Rosyidah Ulfa Dwiyanti Utami, Meilisyah Putri W T Saputra W Widia Warliani, Resti Wihardi, Yaya Yulianita Nursakinah Yulianti, Lisna Zahra Raudi Maulidia