bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of online lectures based on student perspectives during the pandemic.
Authors: Halim A. , Yusrizal  , Saminan  
Published: October 2023

AbstractIn the last two decades the development of information technology (IT) has changed activities, almost all aspects of human life, including the activities of educational aspects. The implementation of conventional face-to-face learning has turned into virtual learning through the internet. There are a large number of students who have experienced both learning systems in college. Therefore, through the research, students were asked to view the types of learning systems that have been carried out online so far. A total of 188 students have been randomly selected from 13 study programs within the Faculty of Teacher Training and Education, Syiah Kuala University and have agreed to become respondents in this survey study. The results of data analysis showed that there was no significant difference between male and female students in assessing online lectures. However, there are several things that are significantly different, including internet network access during online lectures, male students stated that they were quite satisfactory, and female students stated that they were not satisfactory. An important contribution and inference from research results to science learning is getting information about the implementation of online learning and this is an important input for improvement, especially for the development of online modules related to science content.
An investigation on mental representations on coagulation and melting phenomena of preschool pupils with learning disabilities and typical development
Authors: Katsidima Maria-Angeliki , Kaliampos George , Ravanis Konstantinos 
Published: October 2023

Abstract
The aim of the present study is to investigate the mental representations regarding the coagulation and melting phenomena of preschool pupils with learning disabilities. In addition, to compare them with the corresponding representations of typically developing children. By so doing, it aspires to shed light to the feasibility of implementing inclusion into teaching science. To fulfil this purpose, an experimental investigation was conducted with 25 pupils with learning difficulties (M=72.50 months, s.d.=8.11) and 25 pupils with typical development (M=72.50 months, s.d.=9.50). Pupils were selected with convenience sampling while interviews were recorded and transcribed. According to data analysis, pupils’ responses were classified into three distinct levels: sufficient, intermediate and insufficient in terms of school knowledge. Drawing from constructivism theory a digital tool called M.R.H.E.T (Mental Representations Heat Exploration Tool) was developed to fulfill research’s goal. A part of this tool is used for the present study. Findings suggest that preschools pupils with learning difficulties use almost the same ideas on thermal phenomena with those used by preschool pupils with typical development, on a different frequency though. This inevitably reinforces the academic belief of inclusive education for pupils with learning disabilities in teaching science.
The Five-Tier Multiple Choice Instruments in Parabolic Motion for Assessing Concept Understanding of High School Students
Authors: Wijaya Tomi Putra , Mufit Fatni 
Published: October 2023

Abstract
One purpose of physics learning in the 2013 Curriculum was achieved an understanding of the concepts in each physics material. In facts, the teacher had not assessed the students’ concepts understanding, there were no instruments for assessing concept understanding at school and there were misconceptions about the parabolic motion. The solution that can be used to answer this problem was made a five-tier multiple-choice instrument on parabolic motion which was valid and practical to used for assessing concepts uderstanding. This research was development research using the Plomp model which was conducted until the prototype phase. The research began with preliminary research stage. At this stage, giving questionnaires to teachers and a journal analysis was conducted regarding understanding concepts of student on parabolic motion. Then, the research continued with the prototype phase stage was developed five-tier a multiple-choice instrument and determine the validity and practicality of developed product. Based on preliminary research result, it was found that the teacher had not assessed the students’ concepts understanding, there were no instruments for assessing concept understanding at school and there were misconceptions on the parabolic motion. In the development or prototyping phase, produced a five-tier multiple-choice instrument for parabolic motion and conclusions was obtained that the five-tier multiple-choice instrument on parabolic motion was valid and practise to use for assessing the understanding of the concepts of high school students. Therefore, the five-tier multiple choice instrument in parabolic motion can be used in schools for improving students’ concept understanding, especially in parabolic motion.
Validity of guided inquiry-based student worksheets in mechanical waves and thermodynamics
Authors: Sari Silvi Yulia , Sari Mejulia Nurvita , Darvina Yenni , Afrizon Renol 
Published: October 2023

Abstract
21st century learning, especially in learning physics leads to the achievement of Higher Order Thinking Skills (HOTS). These skills can be achieved with various efforts, both the application of learning models and the use of appropriate learning materials. This study aims to develop a valid guided inquiry-based students worksheet as one alternative that can be done to achieve HOTS. The use of this student worksheet can help improve students’ thinking skills through orientation activities, formulating problems, formulating hypotheses, collecting data, testing hypotheses, and formulating conclusions. This research used the ADDIE model. The validation of this student worksheet is in the fourth stage, namely the development stage, which is carried out after the product is created. The results of the validation analysis by experts showed that the guided inquiry-based student worksheets developed were in the very valid category with an average score of 83.1%. This shows that this worksheet has feasibility in terms of presentation, content feasibility, linguistic, and graphic aspects. The results of this validation can contribute as a basis for developing learning materials, especially supporting the optimization of HOTS.
Development of self-diagnostic assessment media by scores based on desktop
Authors: Pribadi F O , Supahar  
Published: October 2023

Abstract
This article was written based on research which aims to develop self-diagnostic assessment media by scores based on desktop on impulse and momentum material. In addition, it aims to determine product quality based on expert assessment and student responses. Product was equipped with the results of the diagnosis and learning suggestions for students based on the scores obtained on each item. The type of research used was the 4-D Model Research and Development. The subjects of this study consisted of 2 experts, 2 practitioners, 3 colleagues, and 44 grade 10 students at Muhammadiyah 2 Yogyakarta High School. Data collection was carried out using product assessment sheets and student response questionnaires. Assessment sheet was used as a guide to the feasibility of the product. The results of expert assessment showed that the products that had been developed were in the “Very Good” category with an average score of 0.90 on a scale of 0-1. Student responses were used as an assessment of product legibility. Student responses showed the “Good” category, with an average score of 3.28 on a scale of 1-4. Therefore, self-diagnostic assessment media by scores based on desktop on impulse and momentum material was appropriate to be used to diagnose students’ initial abilities. In addition, the results of the diagnosis can be used as a basis for evaluation to carry out learning by teachers, so that effective learning can be achieved.
Analysis of Learning Implementation, Skills of 4C, Attitudes Towards Learning and Students’ Understanding Concepts of Physics
Authors: Tanjung M R , Mufit F 
Published: October 2023

AbstractThis research aims to analyze the implementation of learning, skills of 4C, attitudes, and students’ understanding concept of physics at State Senior High School 1 Kinali. The research method used was survey research. The sample in this study amounted to 122 students of eleventh grade major in natural sciences and 3 teachers. In this study, there were four types of instruments, namely a conceptual understanding test (static fluid material), a questionnaire on skills of 4C students, a questionnaire on students’ attitudes towards learning physics, and a questionnaire for teachers in the implementation of physics learning. Data was analyzed using coding and percentage techniques and descriptive analysis. Results was the implementation of physics learning was not fully in accordance with the demands of the curriculum. The results of the test for understanding concept of static fluid material obtained by students who understand the concept were still low (3,6%), and misconceptions by 15.9%. Analysis result of students’ attitudes obtained that students who have a negative attitude of 49,18%. Analysis result of skills of 4C students, it seems that the lowest skills were creative thinking skills as 62,57%. It can be seen from the results of the analysis that there is a discrepancy between the results of the concept understanding test and the students’ self-assessment of their attitude towards learning physics and the 4C skills they have. Therefore, further research is needed such as experimental research to improve the quality of learning by teachers both in the use of learning models, media or material learning.
Analysis of the Coefficient of Performance (COP) on the Car’s Air Cooling System Using a Training Kit with Constant Rotation
Authors: Hidayat Nuzul , Milana  , Yasep Setiawan M. , Giatman M. , Syah Nurhasan 
Published: October 2023

Abstract
The performance of the air condition system is strongly influenced by the compressor work, the condenser cooling temperature. So that the compressor working pressure (suction) and condenser cooling play a very important role in the performance of the air conditioning system which will have an impact on compressor work, compressor power, refrigeration impact, isentropic efficiency and coefficient of performance (COP) of the car air conditioning system. From the research, data will be obtained which include the pressure value on the refrigerant, namely P1 and P2, the temperature on the refrigerant, namely T1, T2, T3 and Tcabin, at the point of installation of the Manifold Gauge and Thermocouple. The research data is then processed and analyzed to obtain performance at constant rotation with variations in compressor working time both actual and theoretical as well as the efficiency of the ac system. From the results of the study, it was found that the compressor rotation was 2300 rpm with a constant rotation then measured the pressure and temperature of the refrigerant, then temperature data was obtained and analyzed to obtain the enthalpy value, thus obtaining the coefficient of performance (COP) of the car air conditioning system. The coefficient of performance (COP) of the resulting system is greater than the actual COP, the optimal COP occurs at P1 30 psi and P2 340 psi working pressures, the actual COP is 3.4848 and the theoretical COP is 4.1500, with an efficiency of 83.97% at 360 seconds.
Development of Internet of Things Based Calorimeter Practicum Tool on Temperature and Heat
Authors: Ramadhanti N. S. , Burhendi F.C.A. , Laksanawati W.D. 
Published: October 2023

Abstract
Measurement errors often occur when students are doing practicum and there is a lack of digital-based tools, especially the use of IoT. The purpose of this research is to develop a calorimeter practicum tool based on the internet of things on temperature & heat materials. This research and development use the ADDIE development model. At the analysis stage, a needs analysis was carried out and the problems encountered. At the design stage, starting with the design of the practicum tool and application. In the development stage, the practicum tools that have been made are tested on material experts, media experts. In the implementation phase, a field test was conducted on a small scale 14 respondents. In the evaluation stage, it is done by analyzed expert validation data, small-scale and large-scale tests. Data obtained from the observation were analyzed descriptively qualitatively. While the validation data were analyzed descriptively qualitatively and quantitatively. The recapitulation score from material experts is 91.8% (very good), media experts are 90.9% (very good), small-scale test is 76.8% (good), large-scale test is 85.08% (very good). So, it can be concluded that the calorimeter practicum tool based on the internet of things is suitable for use in the learning process.
Senior high school students learn physics while playing: how
Authors: Desnita  , Khalid I 
Published: October 2023

Abstract
This research was conducted to improve the quality of physics learning at grade X Science-1 SMAN 1 Padang. Collaboration was conducted between lecturers and physics teachers in the activities of teaching lecturers in schools. The subjects were 35 students of Class X Science-1, which prefer play than study. Their participation and learning outcomes while studying were low. Game-based learning was packed to overcome this problem. Research was conducted for vector addition and straight motion. The research lasted for two circles along eight weeks. The quality of the process was measured by 9 indicators of student activity. The quality of learning outcomes was measured by the proportion of the students who reach the minimum level of completeness. Field notes throughout the learning process showed that all students really enjoy the game and learning. The level of effectiveness of students learning in the first cycle reached 80.32% and classical completeness 91.43%. Level of student activity in the second cycle was 89.21% and classical completeness 88.57%. The quality of the process and learning outcomes in both cycles are very good. These results indicate that the game-based learning can improve the quality of physics learning at Grade X Science-1 of SMAN 1 Padang.
Effect of Generative Learning Models Based on Cognitive Conflict on Students’ Creative Thinking Processes Based on Metacognitive
Authors: Akmam A , Hidayat R , Mufit F , Anshari R , Jalinus N 
Published: October 2023

Abstract
Metacognition is influenced the creative thinking process in Computational Physics courses. The Computational Physics is needed in the business and industrial. However, Computational Physics courses are less attractive for students. The challenge in learning Computational Physics is how to help students effectively develop creative and computational thinking skills. Based on the above, the purpose of this study is to determine the effectiveness of the PGOC3ARE learning model to create the students’ creative thinking skills in Computational Physics learning and to determine the effect of using the PGOC3ARE learning model on metacognitive-based creative thinking skills, especially in Computational Physics courses. The research method used was an explanatory sequential design research method. The research sample was taken through simple random sampling, where the sample was divided into an experimental class and a control class. The sampling technique for collecting qualitative data was purposive sampling. Data analysis using comparative test statistics. The result of the research is that the PGOC3ARE model is effective in shaping students’ creative thinking skills, especially in the Computational Physics course. Furthermore, the PGOC3ARE learning model has a significant positive effect on the development of students’ creative thinking skills in the Computational Physics course with base on metacognition.
Preliminary Study of Development of Chemical Equilibrium E-Module Integrated Virtual Laboratory for High School Students
Authors: Lubis Amalia Putri , Ellizar Ellizar , Zainul Rahadian 
Published: October 2023

AbstractThe use of technology is essential in the twenty-first century, and this includes education. To reduce time and space constraints, educators and students need electronic-based learning materials. E-module is one type of alternate learning medium that can be employed. In order to produce e-modules on chemical equilibrium content, this project will investigate electronic-based learning materials. Since the subject of chemical equilibrium is abstract, students have a hard time grasping its notion. It is anticipated that the use of virtual laboratories and e-modules in chemical equilibrium learning materials will boost students’ competency and independence. To enable students to learn whenever and wherever they are, learning resources in the form of an integrated virtual laboratory e-module are therefore required. Students from SMAN 1 Padangsidimpuan, SMAN 5 Padangsidimpuan, and SMAS Nurul Ilmi Padangsidimpuan made up the research sample for this study, which employed a quantitative descriptive methodology. Needs analysis, idea analysis, and literature review were the three types of analysis used in this study. The methods used to acquire the data were observation, questionnaires, interviews, and relevant document research. The study’s findings point to a variety of issues with the learning process, particularly those that surround the choice of instructional tactics and laboratory experimentation. The findings of this study are anticipated to serve as the foundation for the creation of online modules and attempts to enhance senior high school chemistry instruction.
Improving Digital Pedagogy Competence Through In- Service Training for Elementary School Teacher
Authors: Bentri Alwen , Hidayati Abna 
Published: October 2023

Abstract
Digital pedagogy competencies are needed by teachers in learning in the era of the industrial revolution 4.0. This ability is important for teachers to be able to transform their learning from conventional to digital technology-based. The problem in the field is that many teachers do not have digital pedagogy competencies. This study aims to determine the effectiveness of in-service training for elementary school teachers.This study uses a quantitative experimental method. The research population is elementary school teachers in Sawahlunto City, West Sumatra. Samples were taken purposively as many as 29 teacher representatives from each school. Teachers are given in-service training for 4 meetings. Data were collected from pretest and posttest scores. Data were analyzed using SPSS. The results showed that there was a significant difference between teacher competencies before and after being given training in accordance with the designed digital pedagogy curriculum. In connection with this, it is recommended that teachers need to be given in-service training to improve digital pedagogy competencies so that they can carry out learning optimally in the digital era.The novelty in this research is that the digital pedagogy curriculum that has been implemented can improve teacher competence. The research design in service training allows teachers to be given training with a training system by not leaving their activities as educators who must facilitate students in the classroom. The method used in the training provides convenience for the teacher. In particular, the product of this research can be implemented in schools.
Analysis of the level of student satisfaction with online lectures during the pandemic in terms of gender
Authors: Halim A. , Yusrizal  , Saminan  
Published: October 2023

AbstractOverall, the implementation of education and learning over the last 5 years has changed towards online learning. Various obstacles and obstacles were encountered in the field, including the unpreparedness of educators and students in using online media. This will lead to dissatisfaction from the implementers, namely students and teachers. This research is focused on analyzing student satisfaction in implementing online learning. The data collection in this study used a survey method and a questionnaire in the form of a google form to 188 students from 12 study programs at the Faculty of Teacher Training and Education, Syiah Kuala University. The results of data analysis showed that there were several statement items that were significantly different between male and female students, including the sensitivity of the lecturer to the level of understanding of students during online lectures. In terms of gender, female students had the highest sense of satisfaction with online implementation. Overall, the results of this study have important contributions and conclusions for science learning, including the level of sensitivity of students in science learning classes should be a major concern by educators during online learning.
The limit in the (𝑘+2,𝑘)-problem of Brown, Erdős and Sós exists for all 𝑘≥2
Authors: Delcourt Michelle , Postle Luke 
Published: October 2023

Let

f

(
r
)

(
n
;
s
,
k
)

f^{(r)}(n;s,k)

be the maximum number of edges of an

r
r

-uniform hypergraph on

n
n

vertices not containing a subgraph with

k
k

edges and at most

s
s

vertices. In 1973, Brown, Erdős and Sós conjectured that the limit

lim

n
→
∞

n

−
2

f

(
3
)

(
n
;
k
+
2
,
k
)

\begin{equation*} \lim _{n\to \infty } n^{-2} f^{(3)}(n;k+2,k) \end{equation*}

exists for all positive integers

k
≥
2

k\ge 2

. They proved this for

k
=
2

k=2

. In 2019, Glock proved this for

k
=
3

k=3

and determined the limit. Quite recently, Glock, Joos, Kim, Kühn, Lichev and Pikhurko proved this for

k
=
4

k=4

and determined the limit; we combine their work with a new reduction to fully resolve the conjecture by proving that indeed the limit exists for all positive integers

k
≥
2

k\ge 2

.
Automorphisms and derivations of affine commutative and PI-algebras
Authors: Bezushchak Oksana , Petravchuk Anatoliy , Zelmanov Efim 
Published: October 2023

We prove analogs of A. Selberg’s result for finitely generated subgroups ofAut⁡(A)\operatorname {Aut}(A)and of Engel’s theorem for subalgebras ofDer⁡(A)\operatorname {Der}(A)for a finitely generated associative commutative algebraAAover an associative commutative ring. We prove also an analog of the theorem of W. Burnside and I. Schur about local finiteness of torsion subgroups ofAut⁡(A)\operatorname {Aut}(A).