Jurnal Pena Sains
Not a member yet
175 research outputs found
Sort by
BLENDED LEARNING RESEARCH TRENDS: A BIBLIOMETRIC REVIEW FROM 2015 TO 2025
Full text linkBlended learning, which integrates traditional face-to-face (F2F) instruction with online learning, has emerged as a significant pedagogical approach in higher education. As an evolving approach, blended learning still has many under-explored areas, such as new technologies, long-term impact, and applicability in various educational contexts. This study aims to identify research trends, related keywords, potential keywords, key authors, or collaboration patterns between authors so that it can serve as a foundation for future research. The bibliometric analysis was conducted through several systematic stages, including determining research objectives, collecting bibliometric data, validating and completing data, conducting bibliometric analysis, interpreting data, and reporting results The output results from VOSviewer show that blended learning-related research has a wide scope (573 analysed elements) with very diverse topics (58 clusters) The large number of connections (2109) and the high total strength of the relationship (2335) indicate complex relationships between elements, such as keywords or research themes Frequently used keywords. The findings provide a comprehensive overview that not only strengthens the understanding of the current dynamics of blended learning research, but also provides a strategic foundation to steer future research towards greater innovation and relevance
OPTIMIZATION OF NaOH PRETREATMENT ON AGAROSE QUALITY OF Gelidum sp. SEAWEED FROM THE COSTAL AREA OF YOGYAKARTA, INDONESIA
Full text linkSeaweed of Gelidium sp. is a type of red seaweed that can produce agarose. In this study, seaweed Gelidium sp. was taken from costal area in Yogyakarta, Indonesia. Agarose can be produced from Gelidium sp. using a method including alkali pretreatment and agarose extraction using PEG 6000 at 85°C. Agarose extraction pretreatment of Gelidium sp. was carried out in an alkaline environment using NaOH with concentrations of 4%, 6%, 8%, and 10%. The purpose of this research is to obtain the best quality agarose from pretreatment with various NaOH concentrations. The quality of agarose is determined from the results of gel strength, sulfate content, and galactose content. Good quality of agarose has the higher value of gel strength and galactose content, but the lower sulfate content in agarose extracted from Gelidium sp. Based on the results obtained, the highest agarose yield was obtained from pretreatment with a NaOH concentration of 4% of 31.09%. Meanwhile, at 6% NaOH concentration, the highest gel strength was obtained at 151.70 grams/cm2, the lowest sulfate content of 0.4%, and the highest galactose content of 35.76%. Based on statistical analysis using ANOVA with a significance level of 95%, it shows that the variation of NaOH concentration in the extraction pretreatment has a significant effect on gel strength, sulfate content, and galactose content (p 0.05) but is not significant on the agarose yield. In conclusion, the optimization of NaOH pretreatment produced the best agarose quality at a NaOH concentration of 6% because it resulted in the highest gel strength and galactose content and the lowest sulfate content in agarose
THE COEFFICIENTS OF STATIC AND KINETIC FRICTION USING ARDUINO
Full text linkThe friction coefficient plays an essential role in various aspects of daily life. In transportation safety, the friction coefficient between vehicle tires and the road is critical for safety. In design and construction, friction between structural components contributes to building stability. In industries and machinery, the appropriate friction coefficient between machine parts reduces wear and extends machine life. Therefore, determining the static and kinetic friction coefficients is challenging and requires direct experimental observation of friction. Therefore, a better method is needed to measure the friction coefficient accurately. Several previous studies have been conducted to determine the coefficient of friction using auxiliary tools. The measurement of the friction coefficient using auxiliary tools is indeed necessary to obtain accurate results and save time. It can also avoid misconceptions due to complicated and inefficient manual measurements. In this study, measurement were conducted by pulling a block with a pulley on a flat surface using Arduino Uno and ultrasonic sensor HC-SR04. The research method used in this study is an experiment conducted in the IPSE Chemistry Laboratory. The experimental results show that the static friction coefficient is greater than the kinetic friction coefficient
REVIEW OF MISCONCEPTIONS, LEARNING STRATEGIES, AND THEIR IMPLICATIONS FOR REDUCING MISCONCEPTIONS IN ELECTRICAL MATERIALS
No full textMisconception is a conceptual misunderstanding experienced by students where the concept owned by students does not correspond to the scientific concept. Misconceptions are often found in science, especially in the topic of electricity. Electricity is one of the important topics in science that has many phenomena and connections with everyday life. In addition, electricity is assumed as an abstract concept that is difficult to understand by students. This study aims to analyse literatures that discussed about the detection of students’ misconceptions in electricity concepts and the learning strategies to reduce those misconceptions. The method used in this study is a literature review with four stages: designing the review, conducting the review, analysing the literatures, structuring and writing the review findings. The research findings indicate that the most widely discussed misconception is that the lamp closest to the positive pole of the voltage source receives the largest current. In contrast, the next component receives the remaining current from the previous component. These misconceptions are still being attempted to be reduced or even eliminated. Efforts that have been applied to reduce misconceptions include implementing certain learning strategies that can build students' complete understanding of electrical concepts and combining them with simulations or virtual laboratories that can present concepts visually so that the concepts presented are no longer abstract for students. To conclude, the concept of electricity is abstract and likely to cause misconceptions in students. Therefore, the effective learning strategies have to be implemented to reduce students’ misconceptions in electricity. The list of misconceptions and learning strategies that have been analysed can be used as a reference for teachers to plan appropriate learning strategies in the future to minimize misconceptions.ABSTRACT This study aims to conduct a systematic literature review of studies that have been conducted related to the detection of misconceptions in electrical concepts and the efforts to reduce misconceptions in electrical materials through learning. The method used in this study is a literature review with four stages: designing the review, conducting the review, analyzing, structuring and writing the review. The research study results indicate that the most widely discussed misconception is that the lamp closest to the positive pole of the voltage source receives the largest current. In contrast, the next component receives the remaining current from the previous component. These misconceptions are still being attempted to be reduced or even eliminated. Efforts that have been made to reduce misconceptions include implementing certain learning strategies that can build students' complete understanding of electrical concepts and combining them with simulations or virtual laboratories that can present concepts visually so that the concepts presented are no longer abstract for students. Keywords: misconceptions, learning strategies, electricit
EFFECTIVENESS OF GENIALLY WEBSITE AS A SCIENCE LEARNING MEDIA ON THE EARTH AND SOLAR SYSTEM TOPIC
Full text linkInteractive learning media can be utilized in science learning which is made through software, i.e. Genially website. The Genially website media is supposed to be one of the creative and innovative online learning media that can be implemented in the science learning process. This study is intended to assess the effectiveness of the genially website as a science learning media on earth and solar system material. The method used is quantitative experiment with the type of pre-experiment design research and conducted at SMP Negeri 2 Tanggulangin precisely in class VII-A, this study only uses the experimental class. 31 students were used as samples and made observations, tests, and also questionnaires as tools for data collection. Observations were used to determine the teacher's ability to condition classroom learning, and student activity. Tests were used to determine student learning outcomes by giving 25 multiple choice questions. Questionnaires were used as a measuring tool for student responses regarding the learning media used. The results indicated that the effectiveness of the genially website as a science learning media on the material of the earth and solar system was not effective due to the low student learning outcomes with the N-Gain score reaching 54.83%. To conclude, the use of the Genially website as a science learning media for the Earth and Solar System material was less effective. Therefore, it is necessary to repeat the use of the Genially website media in the learning process so that students are more familiar and their learning outcomes can improve well
ENHANCEMENT OF STUDENTS’ CONCEPT COMPREHENSION THROUGH TEAM GAME TOURNAMENT-BASED COOPERATIVE LEARNING MODEL
Full text linkTeam Games Tournament as one of types in Cooperative learning model is assumed to be able to engage students learning science concepts both individually and in groups actively. The research aims to determine the effectiveness of the Team Game Tournament-based (TGT) cooperative learning model assisted by the Jenga game to improve the students’ understanding of the concept of science lessons on force material. The research used quantitative research of the pre-experimental type with a one group pretest and posttest design which was carried out in four meetings with the research flow starting from giving a pretest followed by giving treatment using the TGT model assisted by the Jenga game then students were given a posttest. The sample of this study was 21 students of SDN 1 Terkesi. Furthermore, the data collected in this study were in the form of observations, interviews, documentation. In addition, the test results were analyzed quantitatively with stages using normality tests, tests and using the N-Gain test. The results obtained from this study are a significant increase in the understanding of science concepts after being given treatment using the TGT model assisted by the Jenga game, the results of the N-Gain test that has been carried out obtained the results that the average value is 76.70% with a very effective category when used in science lessons on force material. According to the findings, it can be concluded that the implementation of the TGT model assisted by the Jenga game can improve the students’ understanding of science concepts
DESIGNING A CHEMO-ENTREPRENEURSHIP PRACTICAL INSTRUCTION IN THE TOPIC OF MACROMOLECULES
Full text linkThe CEP approach combines chemical knowledge with entrepreneurial concepts. In the manufacture of macromolecular products, a deep understanding of chemistry is essential. Entrepreneurship education is very important because it raises enthusiasm and motivates students to start a business when they graduate from school. The research objective is to design practical instruction for Chemo-Entrepreneurship (CEP) focusing on the subject of macromolecules. The type of research used for the development of practical instructions in this study is Research and Development. The development method is ADDIE (Analysis, Design, Development, Implementation, and Evaluation). The product developed was validated by six validators in the valid category according to Aiken's V table with a validity value of 0.846. The research subjects in the product trial developed in this study were students of class XII MIPA SMAN 1 Cepu. The assessment of student responses was in the very good category with a percentage of 94.3%. It can be concluded that the CEP-practical guide is feasible to use. The resulting product is expected to be used as a learning resource on the macromolecule topic
VISIBLE WAVELENGTH EFFECT ON TEMPERATURE CHANGE IN GREENHOUSE EFFECT: LABORATORY DESIGN
Full text linkSchool internships typically adhere to a standard format, employing basic tools for educational purposes. Among these, the greenhouse effect modelling laboratory, traditionally conducted under direct sunlight, faces challenges due to the variability introduced by cloud cover. This variability limits the ability to study the influence of light wavelength on the greenhouse effect, an aspect not accounted for when using sunlight alone. This research aims to explore the impact of light wavelength on temperature changes within greenhouse effect models. In our methodology, we employed an experimental setup that simulated the greenhouse effect using artificial light sources of varying wavelengths: red (641 nm), orange (592 nm), yellow (586 nm), green (536 nm), and blue (474 nm). The experiment involved monitoring the temperature increase within the model greenhouse under each light condition, thereby isolating the effect of wavelength from other environmental variables. The results revealed a direct correlation between light wavelength and the rate of temperature increase in the greenhouse model. Specifically, longer wavelengths were associated with a quicker rise in temperature, highlighting the significant role of wavelength in the greenhouse effect's efficiency. This study underscores the necessity of incorporating wavelength considerations into greenhouse effect models, particularly in educational settings. By integrating such experiments into school curricula, students can gain a deeper, more nuanced understanding of the greenhouse effect, moving beyond the limitations of traditional sunlight-based experiments
STUDENTS’ RESPONSE TOWARD THE COMPETENCIES OF TEACHERS: AN EXPLORATORY STUDY
Full text linkTeachers are one of the main key holders of the success of an education process. As the spearhead of education, the ability of teachers determines the success of education. Teachers apply their competences in conducting the learning process. This research aims to determine students’ responses toward the integrity of honorary teachers and civil servant teachers in the Lamongan, Tuban and Bojonegoro residency areas. The method used in this research is a qualitative approach using a questionnaire distributed via Google Form to high school or equivalent students in several residency areas in Lamongan, Tuban and Bojonegoro. As well as literature studies to strengthen the information we obtain through library materials in the form of previous research articles that are relevant to the topic discussed. There are several differences in the responses of high school or equivalent students in the Lamongan, Tuban and Bojonegoro residency areas regarding the integrity of honorary teachers and civil servant teachers. Regarding the timeliness of starting and ending lessons, the percentage of discipline for honorary teachers is higher than that of civil servant teachers, in creating and using learning media, honorary teachers are more creative; in giving pre-tests and post-tests, honorary teachers carry them out more often. However, in terms of behavioral discipline when teaching in class, civil servant teachers are more disciplined than honorary teachers and in explaining material in class, students more easily understand the material presented by civil servant teachers. To conclude, teachers must have high integrity as educators, namely acting consistently between what has been said or taught with behavior in accordance with the values of a teacher, namely honesty, responsibility and discipline
ANALYSIS OF STUDENTS’ THINKING SKILLS IN BIOLOGY LEARNING: STUDY AT A SCHOOL IN PADANG, INDONESIA
Full text linkThere are several skills used to face the challenges of 21st century development which are abbreviated as 4C, namely critical thinking, collaboration, creativity and communication skills. The concept of 21st century learning, in its development, provides global challenges to the current generation that is developing and this needs to be considered. However, those 21st century skills have not been fully implemented in the learning process, especially in the senior high schools in Padang. The purpose of this study was to determine the 21st Century Skills of Class XII MIPA Students in Biology Learning at Adabiah Padang Private High School. This type of research is descriptive research. The population was all class XII MIPA students at Adabiah Padang Private High School totaling 162 students. The sample taken was 40 students using random sampling technique. The instrument used in collecting data in this study was a test in the form of multiple-choice objectives totaling 17 questions to assess critical thinking skills and observation sheets for creativity, collaboration and communication. The questions used in this study were questions that had been tested for validity and reliability. The results showed that the value of 21st century skills of class XII MIPA students at Adabiah Padang Private High School was 69.57 with high criteria. In detail, students' 21st century skills in critical thinking skills, creativity, collaboration and communication were respectively 73.21; 65.10; 69.64 and 70.31 with high criteria. Therefore, it can be concluded that students' 21st Century skills in biology learning at Adabiah Padang Private High School with high criteria