bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of water purification polluted by heavy metal Fe with active charcoal media of palm oil and bamboo
Authors: Ariyadi R , Fatmawati S , Syar N I , Nasir M , Maulina D , Suhartono  
Published: March 2021

Abstract
The design of a water purifier contaminated with heavy metal Fe has been made using activated charcoal media from palm oil shell and bamboo. The best oil palm shell activated charcoal with the following conditions: yield; 78.79%, water content; 0.50%, ash content; 10%, volatile matter content; 59.13%, bound carbon content; 41%, while the best activated bamboo charcoal with conditions: yield; 68.64%, water content; 0.50%, ash content; 8%, volatile matter content; 61.80%, bound carbon content; 38%. The experiment was started by making a sample of Kahayan river water according to data from the environmental service of Central Kalimantan province with a Fe content of 5.59 mg / L. The sample was tested using an Automic Absorption Spectrophotometer (AAS). From the data, it can be concluded that the absorption of heavy metal Fe with a length of 5 cm of activated charcoal can reduce all levels of Fe in the sample so that variations in the length of activated charcoal filling exceeding 5 cm are more effective
Developing an e-learning-based critical-thinking assessment as a physics learning evaluation media with Kahoot! interactive quiz
Authors: Diana N , Latifah S , Yuberti  , Komikesari H , Rohman M.H. , Tiyan Lady 
Published: March 2021

Abstract
This study aimed to determine process, feasibility, validity, and reliability of the developed E-learning-based critical thinking assessment as a physics learning evaluation media with Kahoot!. The Research and Development method used was by Borg & Gall. The instrument used was a questionnaire. The type of data produced was quantitative data. The final product was declared feasible with the obtained score percentage of 85.89% by media experts, 80.50% by the material expert, and 94.93% by information and technology expert. The developed product was deemed attractive with the obtained attractiveness score percentages in the small-group trial of 86.10% and the field trial of 83.03%. The items of the product were reliable. The objective of this study was only to develop a physics learning evaluation product using Kahoot! and did not seek the influence of the use of the developed product. Therefore, for further research it can be found the effect of using the following products on student achievement. Based on the research results, the developed product in the form of an E-learning-based critical thinking assessment as a physics learning evaluation media with Kahoot! interactive quiz is said to be feasible and can be used to evaluate physics learning activities.
Bibliometric analysis: Augmented reality-based physics laboratory with VOSviewer software
Authors: Putri Cindi Ratna , Soleh Sofyan M , Saregar Antomi , Anugrah Adyt , Susilowati Nur Endah 
Published: March 2021

Abstract
Augmented reality (AR) is a breakthrough in future technology trends that combine information and virtual objects that draw the user’s imagination into a real scene. The implementation of AR into the world of education will greatly affect the transformation of education, especially in the physics education laboratory. The purpose of this research was to analyze the application of the AR in the physics laboratory by providing bibliometric analysis so that the opportunities for further research can be presented. The data had been collected from the Scopus database. There were 80 articles found using the keywords “Augmented Reality and Physics”, 21 articles were found using the keywords “Augmented Reality and Physics Education” and 10 articles were found using the keywords “Augmented Reality and Physics Laboratory”. Then all data was classified according to the type of co-occurrence analysis based on the keywords of the author, co-authorship for unit countries, publication density, and year of publication using VOSviewer software. Based on the analysis, research on the augmented reality-based physics laboratory on the Higher-Order Thinking Skill (HOTS) aspect has never been studied. Previous research discussed physics laboratory experiments based on AR technology using Smart glasses to foster the concept of heat conduction and the effects of AR technology on students’ cognitive in the physics laboratory. Thus, HOTS on AR-based physics laboratories can be opportunities for future research.
Mathematical modeling for awareness, knowledge, and perception that influence willpower to pay tax using multiple regression
Authors: Rinaldi Achi , Devi Yulistia 
Published: March 2021

Abstract
One effort to increase revenue is to increase the source of funds obtained from within the country, namely taxes. The taxpayer’s willingness in their tax payments is essential to optimize tax revenue, so it needs a particular study on this matter. This study discusses the factors that influence the willingness to pay taxes for private taxpayers using multiple regression. The model of willingness to pay taxes through 3 variables, namely: awareness, knowledge, and perception of taxpayers. The study location in Lampung Province was divided into five regions based on the tax office that sheltered it. The samples were taken 100 respondents through a questionnaire with a stratified random sampling technique. The regression model in this study gives significant results for all independent variable coefficients. The variable that has the most significant effect on the willingness to pay taxes is the awareness variable with p-value < 0.05. Stakeholders have to improve awareness, knowledge, and perception to increase state tax revenue.
Digital flipbook immunopedia (DFI): A learning media to improve conceptual of immune system
Authors: Ristanto Rizhal Hendi , Mahardika Reza Dino , Rusdi  
Published: March 2021

Abstract
The research purpose is to analyze digital flipbook immunopedia (DFI) learning media implementation for immune system concept mastery improvement. The research method used quasi-experimental method with one group pretest-posttest design. The research carried out at SMAN 1 Cibinong, Indonesia in Grade XI of MIPA. Samples consisted of 62 students. Instruments used in the research were in the form of multiple-choice questions of 40 questions. The instrument grid refered to a revised Bloom’s Taxonomy levels with indicators of C1 to C6. The instruments were valid and had a significantly high reliability. The Wilcoxon test result of 0.000 indicated the effect of DFI on learning. Average total result of Normalized Gain was 0.81, which was high and the Effect Size test result was 2.37 indicating a strong effect. It proved that DFI could improve the immune system concept mastery. The immune system learning should utilize digital learning media, such as flipbook that could assist in the achievement of concept mastery.
Respiratory system: A learning content development system-based student worksheet in biology
Authors: Thahir Andi , Gustina  , Yetri  , Bulantika Siti Zahra , Sari Permata , Rimonda Rubi , Dewantari Tri 
Published: March 2021

AbstractThis study aims to develop student worksheets based on Learning Content Development System (LCDS) to help and motivate students to participate in classroom learning. This research development research using the Borg and Gall research model, with seven stages, namely the preliminary study, the planning stage, the product development stage, the design validation stage, the testing and revision of the results. The results of this study indicate that the development of LCDS-based worksheets is in the very feasible category, can be used easily, with instructions for use, encourages students to learn optimally, presents interestingly, and is not dull. Student worksheets can be developed with various innovations as learning materials and media for students.
Mini review: Improving teachers’ quality in STEM-based science teaching-learning in secondary school
Authors: Syafril Syafrimen , Rahayu Titik , Al-Munawwarah Sophia Fithri , Satar Ibdal , Halim Lilia Bt , Yaumas Nova Erlina , Pahrudin Agus 
Published: March 2021

AbstractThe latest Approach in the teaching-learning process called “Science, Technology, Engineering and Mathematics” (STEM) has become the most recent trend in this decade. STEM aims not only to process and produce talents with expertise in education but also to function as a catalyst for economic growth and national development. However, there are still impending issues associated with the usage of STEM in secondary school, one of which is related to the quality of teachers. Previous research was used as a reference to discuss each of the problems analysed using NVIVO 12.0 software. The result showed that (i) an effective curriculum and (ii) increased motivation and teacher assistance in implementing STEM were the basis for improving teacher quality in STEM-based learning. STEM is useful in science learning, used in applying knowledge and skills for problem solving in everyday life. To improve teacher quality in the STEM-based teaching and learning process, teachers must master the conceptual model, design, implementation and evaluation of an integrated curriculum. Ongoing assistance to teachers to increase motivation in the STEM-based teaching and learning process also needs attention.
Problem-based learning model on students’ critical-thinking skills: A meta-analysis study
Authors: Bonafide Dhea Yusma , Yuberti  , Saregar Antomi , Fasa Muhammad Iqbal 
Published: March 2021

Abstract
The Problem-based Learning model is increasingly popular in physics learning since it encourages students to think openly, actively, and reflectively. Thus, it affects students’ critical-thinking skills. Through the meta-analysis, this study discussed how Problem-based Learning improved students’ critical-thinking skills. In this study, the researchers employed the experimental design with a meta-analysis technique. The research had been conducted by collecting articles from Google Scholar, Scopus, and ERIC (Education Resources Information Center). A total of 122 articles had been obtained which then 15 articles were selected and analyzed through 5 stages, namely (1) Orientation, (2) Conceptualization, (3) Investigation, (4) Discussion, and (5) Conclusion. The results of this study indicated that the Problem-based Learning model was able to improve students’ critical-thinking processes from the elementary level to the tertiary level. However, research on the Problem-based Learning model toward students’ critical-thinking skills has not been done much in the field of physics-based on levels and dependent variables.
E-module development based on PBL integrated STEM assisted by social media to improve critical thinking skill: A preliminary study
Authors: Kurniati Rika Dwi , Andra Doni , Wayan Distrik I 
Published: March 2021

Abstract
This research aims to develop an electronic module (e-module) based on problem-based learning (PBL) integrated into Science, Technology, Engineering, and Mathematics (STEM) assisted by social media to improve students’ critical thinking skills in a dynamic fluid material. The development of this research used a mixed-method consisting of qualitative and quantitative data. This study involved 308 students and 17 physics teachers in Lampung province. The results of the preliminary research conducted by only 12.5% of teachers used STEM integrated PBL-based e-modules to improve students’ critical thinking skills and 46.6% of students stated that they only used printed books when physics learning. 100% of teachers and 88.2% of students stated that they need e-modules to make learning easier. 50% of teachers stated that they use social media as a learning tool. Based on the results of the preliminary study, the use of e-modules is needed by teachers and students. A need analysis needs to be done for the development of E-Module integrates STEM-assisted PBL-based social media to enhance students’ critical thinking skills.
The development physics e-module based PBL–Integrated STEM to improve higher-order thinking skills on static fluid material
Authors: Pane Ayu Novitasari , Andra Doni , Wayan Distrik I 
Published: March 2021

Abstract
One of the skills of the 21st-century in the era of the industrial revolution 4.0, namely higher-order thinking skills. According to TIMSS, high-level thinking skills in Indonesia are still low. Teaching materials that do not contain 21st-century skills will have an impact on the effectiveness of achieving competence in learning. This study aims to analyze the need for e-modules as teaching materials and to determine the teacher’s response to the STEM integrated e-module. This research uses mixed methods. This research was conducted in several high schools in the Lampung area with 20 physics subject teachers as the research subjects. Data collection techniques using questionnaires and interviews. The object of this research is high-level thinking, Problem Based Learning model, and STEM integrated e-module analysis. The results showed that teachers need e-modules as a learning resource that is integrated with STEM to improve higher-order thinking skills. The e-module is expected to be a learning resource that can integrate text, animation, video, and audio and can explain abstract concepts in physics learning. So, in further research, an e-module based on Problem Based Learning with STEM integration can be developed to improve high-level thinking skills.
Literature Research: Ethnoscience in Science Learning
Authors: Wati Erma , Yuberti  , Saregar Antomi , Fasa Muhammad Iqbal , Aziz Abdul 
Published: March 2021

Abstract
The purpose of this research was to provide a bibliometric literature review to find the trends of research on the discussion of Ethnoscience in science learning. The descriptive method with the bibliometric approach was applied in this research. The articles were found on the Google Scholar and Scopus databases assisted by the Publish or Perish (PoP) software. The numbers of articles obtained were 661 in 2015-2020 (5 year period). All articles had been selected according to the criteria determined by the researcher. The Mendeley software was used to manage the metadata so that the final numbers of articles were 272. The visualization was produced using Bibliometric VOSviewer software. The trends recommendations for further research on the Ethnoscience in science learning are related to ethnostem, chemistry learning, and the development of teaching material in the form of books and worksheets related to Ethnoscience in science learning.
The role of agroedu-tourism program in enhancing young generation’s knowledge on urban farming: Hydroponics technique
Authors: Priyanti  , Hardiana Muhammad Ibnu , Suri Hutasuhut Dessy Atika 
Published: March 2021

AbstractThe low regeneration of farmers in Indonesia encourages agricultural education to the young generation. Cendekia Baznas School (SCB) develops the Agroedu-tourism program as a place to learn agriculture for the young generation. This study aims to determine the increase in knowledge of agroedu-tourism program participants on urban farming, especially hydroponics. This type of research is an evaluation research based on the knowledge gained by program participants. This research was conducted in Bogor, West Java. The sample in this study participants of the agroedu-tourism program were 46 students from SMP Nurul Ihsan, Bogor, Java. The data obtained were inputted at Ms. Excel 2010, then it was performed the normality test and paired T-test difference test using SPSS 20. The results of this study were that there was an increase in the average score of participants’ knowledge from before and after participating in agroedu-tourism activities. In addition, there are significant differences in hydroponic knowledge.
Developing student worksheet of natural science for the eighth-grade junior high school students based on critical thinking skills
Authors: Marlina Leni , Meiwandari Mutiara , Sriyanti Ida , Jauhari Jaidan 
Published: March 2021

Abstract
This research was aimed to develop a valid and practical Students’ Worksheet of Natural Science for junior high school students based on critical thinking skills. The development model used in this research was the Rowntree development model consisting of three steps, namely planning, development, and evaluation. The evaluation step was the formative evaluation step by Tessmer consisted of five steps, namely self-evaluation, expert review, one-to-one evaluation, small-group evaluation, and field testing. However, the field testing step was not done because the research objectives were only focused on validity and practicality. The data had been collected using walkthrough and questionnaire techniques. The results showed that the developed product was in a highly valid category based on the score of expert validations. The validation score obtained from the language expert was 4.73, the score obtained from the design expert was 4.56, and the validation score of critical thinking skills was 4.56. At the one-to-one evaluation step, the product was declared as very practical, practical, and quite practical. At the small-group evaluation step, the product was declared very practical and practical. Thus, the developed product has been valid and practical.
Standardized physics practice e-assessment instrument for senior high school
Authors: Purnomo Dian , Rosidin Undang , Herlina Kartini 
Published: March 2021

Abstract
COVID-19 pandemic has a major impact on the world of education. The existence of the coronavirus outbreak has hampered teaching and learning activities that usually take place face-to-face and have now turned into distance learning (online). Online learning is inseparable from an assessment, both cognitive, affective, and psychomotor. Good assessment instruments will affect the results to be achieved. This study aims to analyze the e-assessment instrument for standardized physics practice exams in senior high school. The subjects of this study were 10 high school physics teachers with the selection using purposive. This research uses mixed methods, namely research by combining two forms of research, namely qualitative and quantitative research. The questionnaire was analyzed quantitatively, while the results of the questionnaire data were explained qualitatively. For data collection, the researcher provided an online questionnaire for preliminary analysis related to the e-assessment of standardized physics practice exams in high schools in Lampung.
Effect of local microorganisms (LOM) and growing media on growth of guava (Psidium guajava L.) at nursery stage
Authors: Diana Widyastuti Raden Ajeng , Hendarto Kus , Yanfika Helvi , Listiana Indah , Mutolib Abdul , Rahmat Ali 
Published: March 2021

Abstract
Guava is a fruit that trade internationally. One of the problems in Indonesia is preparing the plant for a seedling. This research investigated the effect of local microorganisms and growing media on Guava’s growth at the nursery stage. The experiment was conducted from June to August 2020, at the experimental site of agriculture faculty, University of Lampung. The design used was a Complete Randomized Design (CRD) with two factors: growing media and local microorganisms (LOM). Growing media consisting of 2 types, M1: combination soil and rice husk, M2: combination soil and baglog waste. Local microorganisms consisting of 4 types, P1: local microorganisms from EM4, P2: local microorganisms from rice fermentation, P3: local microorganisms from oil palm empty bunches fermentation, P3: local microorganisms from fruit and vegetable fermentation. The results showed that the treatment combination of local microorganismss and growing media did not show the dominant pattern. Growing media combination of soil and rice husk was better than a combination of soil and baglog waste to support Guava’s growth. Local microorganisms from fruit and vegetable fermentation promote the high value on the growth of Guava.
The physical sciences in early childhood education: Theoretical frameworks, strategies and activities
Authors: Ravanis Konstantinos 
Published: March 2021

Abstract
This paper deals with the different theoretical frameworks used for the initiation of early childhood students to the physical sciences. We present in general four distinct frameworks as well as typical examples of their teaching approaches. The empiricist trends are mainly involved in the effort to transmit knowledge of science, connect new experiences with the children’s old experiences, and exhibit and present experiments. The theoretical and methodological framework of the second category of research and deployment activities is Piagetian genetic epistemology. Within this framework, children are offered opportunities to assimilate physical knowledge through experimentation and the manipulation of specially constructed, selected, and organized teaching materials and environments. In the socio-cognitive approach, one can classify activities that are influenced by post-Piagetian and/or by Vygotsky’s learning theories as well as by the results of research in Science Education, which in general recognize the importance and the privileged role of student’s mental representations, and of social interaction in the implementation of new cognitive operations. Finally, in the socio-cultural perspective of Vygotsky on the basis of which learning is the product of the holistic social, cultural and historical horizon of the student, the approach of concepts and phenomena of physical sciences is attempted through daily activities familiar to young children.
The correlation between physics problem-solving skill and metacognitive ability from collaboration of socratic dialogue-modeling instruction implementation
Authors: Lestari N A , Deta U A 
Published: March 2021

Abstract
Metacognitive ability linked to the problem-solving skill lies in the control of cognitive processes as a guide in problems solving. Problem-solving skill should be trained as a scaffolding for students. Scaffolding can be done through Socratic dialogue. Implementation of Socratic dialogue will be more effective when combined with modelling instruction. Therefore, the research had been conducted to determine the influence of Socratic dialogue in modelling instruction on physics problem-solving skill in terms of students’ metacognitive ability. This research is a quasi-experiment posttest only group design with a 2x2 factorial design. The results showed that: (1) the physics problem-solving ability of students learned by modelling instruction+socratic dialogue are higher than conventional learning, (2) there is an interaction between modelling instruction+socratic dialogue with the metacognitive ability to physics problem-solving skill, (3) the physics problem-solving skill of students with high metacognitive ability learned by modelling instruction+socratic dialogue are higher than conventional learning, (4) the physics problem-solving skill of students with low metacognitive ability learned by modelling instruction+socratic dialogue are lower than conventional learning.