EduFisika: Jurnal Pendidikan Fisika

IDENTIFICATION OF STUDENTS' CONCEPTUAL UNDERSTANDING OF TEMPERATURE AND HEAT MATERIAL

Erine Trisnasari, Sarina Oksiana — Thu, 12 Dec 2024 00:00:00 +0700

The purpose of this study was to determine the conceptual understanding of eleventh-grade students in Science-Three at Senior High School 8 Malang on the topic of temperature and heat. The study used a survey method with a multiple-choice question instrument that had been tested. The data analysis technique used was quantitative descriptive analysis based on the percentage of students' level of understanding. The questions were analyzed by the level of difficulty. The results of the study indicated that students' conceptual understanding score was 45.4%. It can be concluded that eleventh-grade students in Science-Three at Senior High School 8 Malang have a moderate level of understanding of the concepts of temperature and heat. The study revealed that many students had misconceptions about heat capacity and heat equilibrium. This study revealed that many students have misconceptions about heat capacity and heat equilibrium indicating that students do not fully understand this material. The author analyzed students' responses to questions categorized as difficult to determine the extent of their conceptual understanding when answering.

EFFECTIVENESS OF PHYSICS INTERACTIVE LEARNING MEDIA IN IMPROVING LEARNERS’S SCIENCE LITERACY SKILLS: SYSTEMATIC LITERATURE

Fri, 13 Dec 2024 00:00:00 +0700

This study reviews the literature in an effort to determine how well students' science literacy can be raised by utilizing interactive learning resources for physics. Understanding scientific ideas, using science knowledge in daily situations, and analyzing and resolving science-related issues are all components of science literacy. This study has identified and analyzed a variety of interactive learning media, including interactive magazines, interactive kinematics learning applications, interactive electronic learner worksheet based on LiveWorksheets, Higher Order Thingking Skill-based interactive modules, and learning videos based on the 5E learning cycle model. The study's findings show that interactive learning media can be a very useful tool for teaching physics, but its effectiveness depends largely on how well it is implemented, how well the design of the instruction is done, and how well the learning environment supports the student.

BIOACTIVE GLASS BONE IMPLANT MATERIALS FROM CANE WASTE AND EGG SHELL WASTE

Fri, 13 Dec 2024 00:00:00 +0700

Sugarcane bagasse and eggshell waste are common types of waste found in Indonesia. This article introduces an innovation to utilize these two waste materials as bone implant materials, offering a way to increase their economic value. Bone implant materials primarily consist of SiO2 and CaO, both of which can be derived from sugarcane bagasse and eggshell waste. The process of making bone implants begins with the purification of sugarcane bagasse and eggshell waste to produce SiO2 and CaO compounds. Characterizations conducted at each stage of the reaction process in this research include FTIR, XRD, and SEM.The purification of sugarcane bagasse into SiO2 is carried out using a hydrothermal reaction, while the purification of eggshell waste is performed using the calcination method. Once the high-purity raw materials are obtained, the process continues with the production of bioactive glass. Bioactive glass is a biomatrix material used as a bone implant material. Its composition requires SiO2 = 45%, Na2O = 25%, CaO = 25%, and P2O5 = 5% (weight/weight). The sol-gel method is employed to produce the bioactive glass.After the bioactive glass material is produced, it is further characterized to evaluate its structure and properties. Additionally, bioactivity testing is conducted using SBF (Simulated Body Fluid) to ensure its safety when used as a bone implant and its interaction with body tissues.

DETERMINATION OF EARTH'S GRAVITATIONAL ACCELERATION USING PHET SIMULATION MEDIA WITH A WEIGHTED AVERAGE TECHNIQUE

Putri Ani Saumarachmawati, Moh Toifur — Sun, 22 Dec 2024 00:00:00 +0700

The value of gravitational acceleration (g) varies across different locations depending on the distance from the surface to the Earth's center of mass. Additionally, the value of ggg is influenced by the data processing method employed. This study aims to determine the Earth's gravitational acceleration in the Banten region using a pendulum assisted by the Phet pendulum-lab simulation. The experiment was conducted using two methods: the average technique and the weighted average technique. For the average technique, the period was measured 10 times for a string length of 80 cm. For the weighted average technique, the period of the pendulum swing was measured at varying string lengths from 80 to 100 cm, with five variations, each measured 10 times. The results of the study showed that the gravitational acceleration determined using the average technique was 9.72 ± 0.28 m/s², while the weighted average technique yielded 9.78 ± 0.08 m/s². With the reference value of gravitational acceleration being 9.80 m/s², the weighted average technique successfully corrected the relative error from 0.82% to none. Moreover, the determination of gravitational acceleration using the weighted average technique produced more accurate results compared to the average technique. This study also confirms that the PhET simulation is an effective and reliable tool for measuring gravitational acceleration, particularly when physical experimental conditions are less than ideal. The weighted average technique significantly contributes to improving measurement precision, making it valuable for both physics research and education

THE RELATIONSHIP BETWEEN SCIENCE PROCESS SKILLS AND 21ST CENTURY SKILLS IN SCIENCE LEARNING: SYSTEMATIC LITERATURE REVIEW

Miftahul Zannah Azzahra, Ahmad Mansur Nawahdani, Ilham Falani — Sun, 29 Dec 2024 00:00:00 +0700

The purpose of this study was to explore and analyze the relationship between science process skills and 21st-century skills in science learning through the Systematic Literature Review approach. Data collection was carried out using a reference manager application, namely Publish or Perish. The search strategy used keywords developed from the main concepts, namely science process skills and 21st-century skills in science education. The collected data were then stored in *.ris format for further analysis using VOSviewer software. Bibliometric analysis was used to assess opportunities for future scientific research. This study used metadata from 400 articles. This metadata was extracted from the Scopus and Google Scholar databases. Metadata was evaluated using Vosviewer to build its visualization. This mapping process consists of three types of visualizations, namely network visualization, density visualization, and overlay visualization. The results of the study indicate that science process skills are closely related to 21st-century skills, especially in terms of critical thinking, computational thinking, and inquiry-based learning.

LITERATURE REVIEW: THE IMPACT OF PROBLEM-BASED LEARNING (PBL) MODEL ON STUDENTS' COLLABORATION SKILLS IN 21ST CENTURY SCIENCE EDUCATION

Sri Wina Oktavia, Jodion Siburian, M. Arif Rahman Hakim — Sun, 29 Dec 2024 00:00:00 +0700

The research aims to review the impact of the Problem-Based Learning (PBL) model on students' collaboration skills in science learning through a literature review of various related studies. The method used is a literature review by analyzing several articles that discuss the use of PBL in science learning and its impact on improving students' collaboration skills. The results showed that PBL significantly contributed to the improvement of students' collaborative skills. With the implementation of PBL, students actively participate in solving problems, discussing and working together effectively, which contributes positively to improving their learning outcomes and scientific communication skills. The research also revealed that the success of PBL implementation is strongly influenced by the teacher's role in managing group dynamics and facilitating the learning process. The implication of the study is that PBL can be adopted as an effective learning model in improving students' collaboration skills. Proper implementation and strong teacher support can ensure the success of PBL implementation in improving students' collaborative skills in various learning contexts, especially in science.

FIVE-TIER FORMAT MISCONCEPTION DIAGNOSTIC INSTRUMENT: SYSTEMATIC LITERATURE REVIEW

Elza Triani, Ilham Fahlani — Sun, 29 Dec 2024 00:00:00 +0700

This study aims to identify the types of misconceptions in physics learning and their causes through a systematic literature review. Misconceptions, triggered by internal factors such as incorrect initial understanding and external factors such as inappropriate learning resources, are a major challenge in physics learning. The five-level diagnostic instrument offers an effective solution to comprehensively analyze misconceptions by evaluating students' answers, the reasons behind them, and their beliefs about the answers. A bibliometric analysis of 317 articles (2015–2024) using VOSviewer showed three main themes: students' understanding, diagnostic tool development, and teaching effectiveness. The findings showed that students' misconceptions often occur in abstract physics concepts, such as motion and force. The five-level instrument allows for deeper identification than other instruments, helping teachers to carry out more targeted learning interventions. The results of this study confirm that the use of the five-level diagnostic instrument significantly improves students' understanding of physics concepts and reduces misconceptions. In addition, this study highlights the need to develop more effective diagnostic instruments to support better physics learning processes

ANALYSIS OF ENERGY CONCEPTS THROUGH PHET SIMULATION: A CASE STUDY ON SKATE PARK

Sudirman Sudirman, Putut Marwoto, Sunyoto Eko Nugroho — Mon, 30 Dec 2024 00:00:00 +0700

This study aims to analyze students' understanding of energy concepts through the PhET simulation in the case of the Skate Park. Energy concepts, including kinetic energy, potential energy, and mechanical energy, often present challenges in physics education, particularly in the context of visual and interactive comprehension. In this study, the PhET "Energy Skate Park" simulation was used to observe energy changes in objects moving along a skate park track at various heights. The study involved high school students conducting experiments using this simulation to understand the basic principles of physics related to energy changes. Data were collected through direct observations and pre-test and post-test quizzes to assess the improvement in students' understanding of energy concepts. The results showed that using the PhET simulation significantly helped students understand the changes between kinetic energy, potential energy, and mechanical energy in a more tangible and visual context. The average post-test score (86.67) demonstrated an increase of 24 points compared to the pre-test score (62.67), with the standard deviation decreasing from 7.91 to 6.05, indicating a more consistent understanding among students. The simulation effectively assisted students in building conceptual schemas through interactive visualization and virtual experiments, aligning with constructivist theory, experiential learning, and multimedia learning theories.The simulation also demonstrated its potential to enhance student engagement and their ability to apply physics concepts to real-life situations.

EFFECT OF FERMENTATION DURATION ON THE ELECTRICAL PROPERTIES OF KETAPANG AND TAMARIND EXTRACTS

Ririn Mauliza, Juniar Afrida — Tue, 31 Dec 2024 00:00:00 +0700

Ketapang fruit (Terminalia catappa L.) and tamarind fruit (Tamarindus indica L.) contain electrolytes that have the potential to serve as alternative energy sources for bio-batteries. This study aims to examine the effect of fermentation duration of extracts from both fruits on pH, electrical voltage, electrical current, and electrical power. This is an experimental study. The fruit samples were fermented for 10 days with varying concentrations of 50, 100, 150, 200, and 250 ppm for each solution. Measurements were carried out using a digital pH meter and a multimeter to determine the electrochemical characteristics. The results showed that the pH of the solution tended to increase during fermentation, with the lowest pH recorded on day 0 in the tamarind solution (250 ppm, pH 6.4) and the highest on day 10 in the ketapang solution (50 ppm, pH 8.1). The electrical voltage of the ketapang solution at all concentrations showed a fluctuating trend. The electrical current consistently showed negative results (-0.010 to -0.020 mA), indicating that the direction of charge flow was opposite to conventional outputs. The electrical power was directly proportional to the voltage and current but showed instability in the ketapang solution. The alkalization process during fermentation contributed to changes in the electrochemical properties of the solution. The increase in pH influenced ion conductivity and electrochemical mechanisms, such as the movement of hydroxide ions (OH-minus). This study indicates that ketapang and tamarind fruits can be utilized as alternative energy sources for bio-battery.