bluuebunny/crossref_metadata_2025 huggingface dataset:
An investigation of critical thinking skill of pre-service physics teacher in the case of fission and fusion reactions
Authors: Hartini S , Liliasari S , Sinaga P , Abdullah A G
Published: March 2021

This study aimed to examine the critical thinking skills of pre-service physics teacher in the case of fission and fusion reactions. This research used quantitative descriptive method involving 22 final-year pre-service physics teacher in one of Institute of Teachers Training in Banjarmasin, South Kalimantan. The instrument used in this study was a critical thinking skill test with essay question types based on five indicators of critical thinking skill by Ennis. The results showed that the critical thinking skills of pre-service physics teacher students on the five indicators were categorized as very low. An improvement is needed in lecturing activities to improve students’ critical thinking skills by using experimental activities through a digital environment.
Evaluation of collaborative problem-solving skills: students social and cognitive skills on the parabolic motion material
Authors: Mashuri N , Hermanto I M , Sinaga P , Hasanah L
Published: March 2021

Education is currently demanded to be able to provide 21st century skills to students so that they can be successful in the world of work and life in the future. One of the 21st century skills of particular concern is Collaborative Problem Solving (CPS) which plays an important role for students to be able to solve a problem collaboratively. This study aims to obtain an overview of CPS skills of students in the pursuit of physics. CPS is analyzed through two domains, social skills and cognitive skills. The subjects in this study were students of grade 10 in a public high school in Riau. Data is collected by giving problems of application of parabolic motion in everyday life. Students’ answers on answer sheets and recorded conversations of students are then analyzed using a rubric of CPS skills. The results showed that CPS skills of students in social skills and cognitive skills are still dominated in the low and middle categories. This result does not contain all the indicators developed by Hesse et al. several obstacles were also found in the assessment process. For this reason, further research is recommended to assess all indicators and use computer-based assessments.
Increased mathematical relational understanding ability and self regulated learning of high school students through Edmodo online learning
Authors: Nurjanah S , Mulyaning E C , Nurlaelah E
Published: March 2021

This study aims to analyze and improve the relational mathematical learning abilities and independent learning of students who obtain Edmodo and Google Classroom learning which is reviewed with mathematical initial ability. This type of research is a quasi-experimental design. The research sample is students of class X MIPA 1 and 2. Data collection techniques with purposive sampling technique. The instrument used consisted of tests and questionnaires. The results showed that 1) Overall, the achievement and improvement of the mathematical relational understanding ability (KPRM) of students who obtained the Edmodo learning were no higher than students who received Google Classroom learning, 2) a. Viewed from the high KAM category, accepted and improved, the KPRM of students who received the Edmodo learning was no higher than students who obtained Google Classroom learning, b. Judging from the moderate KAM category, the achievement and improvement of the KPRM of the students who received the Edmodo learning were not significantly higher than students who obtained Google Classroom learning, 3) Overall, independent learning achievement arranged by students who learned Edmodo learning was not significantly higher for students who received Google Classroom learning, and 4) A significant relationship is obtained between KPRM and students’ SRL in Edmodo learning.
Development of algebraic domino games in mathematics learning based on ICT in junior high school
Authors: Umbara U , Munir  , Susilana R , Puadi E F W
Published: March 2021

The development of ICT in learning mathematics is one of the innovative efforts that can be used as an alternative to the development of mathematical learning models. Based on these arguments, the aim of this research is to develop ICT learning tools based on interactive mathematical games in junior high schools called domino algebra. This research is a research development of multimedia prototypes based on interactive mathematical games. The results of the development show the average value of the media expert validation test was 4.62, while the average value of the content content expert validation was 4.81. The practicality test results of the usage by the teacher get a value of 4.72 while the average practicality test results by students are one to one try out evaluations, small group evaluations, and field evaluations with a total of 20 students getting an average value of 4.63. Based on these data, ICT learning based on interactive mathematical games developed is declared suitable for use in mathematics learning in junior high schools.
Relational thinking in early algebra learning: a systematic literature review
Authors: Andini M , Prabawanto S
Published: March 2021

Algebraic thinking in early grades has taken a lot of researchers’ attention since a few decades ago until now. A number of students ‘difficulties in learning early algebra have been linked to deficiencies in learning during students’ transition from arithmetic to algebra. This study aims to analyze relational thinking; a way of thinking that is a bridge between arithmetic thinking and algebraic thinking. Through a systematic literature review method, researchers analyzed 26 articles from at least 20 journals. Researchers focus on the characteristics of relational thinking, its relation to early algebra learning, and the problems and teaching solutions that have been raised by previous researchers. As a result and implication, various lesson designs that develop this type of thinking have been presented as solutions to the many problems associated with early algebra learning. This research is expected to be the basis of how to make lesson designs that can anticipate deficiencies in arithmetic learning when students have entered early algebra learning.
Designing a pocket book to support students in ordinary differential equation online learning: a need analysis
Authors: Rifandi R , Rani M M , Manda T G
Published: March 2021

This study aimed to investigate the need for developing a pocket book as a suplementary materials in supporting students who study Ordinary Differential Equation (ODE) through online learning platform. This research is a qualitative study. The subject of this study is 73 students of Mathematics Department of Universitas Negeri Padang (UNP) who took ODE course in the academic year of 2019/2020. They experienced learning through e-learning portal of UNP. The techniques in collecting data is by giving an online questionnaire to the participants. The result of this study shows that lecturer need to design a pocket book for ODE course in order to support students in the online learning process.
Student’s mathematical communication ability based on Kolb’s learning styles of assimilator and accommodator type
Authors: Rohmanawati E , Kusmayadi T A , Fitriana L
Published: March 2021

Mathematical communication has an important role in the problem solving process. One factor that can support mathematical communication skills is learning style. It is important for teachers to analyze their students learning styles, so that the information obtained can help to be more sensitive in understanding differences in class and can make learning more meaningful. This research aims to describe a mathematical communication of students based on Kolb’s learning styles of assimilator and accommodator type. This research used a qualitative descriptive method. The subjects of this research consisted of two Junior High School students who were selected using purposive sampling. The instruments used in this research were tests and questionnaires, while the data validity used the triangulation method. The data analysis was performed through data collection, data reduction, data presentation, and conclusion. The research result shows that the assimilator type students were able to describing the problem situation in the form of geometry and using mathematical solutions related to the analysis of other forms. While the student with accommodator type can investigate about what is known and describes the problem situation in the form of geometry.
A case study of analyzing 10th grade students using what-if-not strategy for mathematical problem posing in trigonometry topic
Authors: Suri A , Kusnandi  , Juandi D
Published: March 2021

Mathematical problem posing is one of the important things that can help students to know how the developing higher order thinking skill. This study aims to present students’ mathematical problem posing using what-if-not strategy in trigonometry topic. This study was qualitative descriptive research with case study. The data were collected by using a written test, observation and an interview. The test was conducted to measure students’ mathematical problem posing and interview was conducted to determine the factors that influence mathematical problem posing. The research subjects were 10th grade students in Pangkalpinang. The result shows that the students’ mathematical problem posing was better than after using what-if-not strategy. The factors that influence students’ mathematical problem posing are the skill to understand the topic, the skill convergent thinking, the skill divergent thinking, creativity and strategies used by teachers in the learning process.
Analysis of the effectiveness of students’ worksheets assisted by Google Form in junior high school in Langsa Kota as an alternative of independent learning during Covid-19 pandemic
Authors: Priyanda R , Fadhelina N , Ariska R N
Published: March 2021

The aims of this study are to analyze the effectiveness of students’ worksheets assisted with Google Form during the Covid-19 pandemic, to find out whether this worksheets would improve students’ interest and independence of learning, and to reveal the percentage of teachers’ interest to use this worksheets. The sample of the research was the whole junior high school mathematics teacher in Langsa Kota and the object of the research is the effectiveness of the worksheets which use Google Form. The data were collected by the instrument of questionnaire and observation. The students’ independence of learning were categorized into medium with the responses of 93% and teacher interest to use the worksheets is categorized high (more than 50% per category). It can be concluded that the use of the Google Form worksheets could improve students’ learning independence, stimulates students’ learning interest, and increase teacher interest to be able to use the worksheets with Google Form in their classroom.
The improvement of mathematical communication ability of elementary school students through project-based learning using mind map technique
Authors: Farokhah L , Nurmulia F , Herman T , Jupri A , Pratiwi V , Nurkaeti N , Abidin Z
Published: March 2021

Mathematical communication is one of the important abilities for students to face the challenges in this era. The fact-based on the preliminary study conducted by researchers on students in elementary school showed that most students find difficulties in communicating mathematical ideas. The present study is aimed to describe whether the improvement of mathematical communication ability of students who learn through project-based learning using mind map technique is better than the improvement of mathematical communication ability of students who learn through project-based learning without mind map technique. This study used a quasi-experiment using a non-equivalent group design. Sixty-three students of one of the elementary schools in Bandung city were taken as subjects of this study. The instrument of this study used mathematical communication test. The data were analyzed using non-parametric statistics. The result showed that the improvement of mathematical communication ability of students who learn through project-based learning using mind map technique is better than the improvement of mathematical communication ability of students who learn through project-based learning without mind map technique.
Achievement emotions of female students in mathematical problem-solving situations
Authors: Suparman S , Juandi D , Herman T
Published: March 2021

Achievement emotions have an important role in students’ Mathematics learning outcomes. The dynamic of achievement emotions in mathematics learning evaluation is very important to be considered by the teachers so that students’ academic achievement can be improved. This study was conducted to investigate female students’ achievement emotions in mathematical problem-solving situations. The study involved 50 seventh grade female students selected by using purposive sampling technique. The data were collected through achievement emotions questionnaires and mathematical problem-solving ability tests. The data were analyzed using Wilcoxon test and Kendal’s Tau correlation test. The findings indicated that mathematical problem-solving situation gave significant small negative effect in decreasing students’ joyful emotion. Moreover, it also gave significant small positive effect in increasing students’ depressed emotion. In addition, there was a significant moderate correlation between mathematical problem-solving ability and students’ joyful emotions after the test. Based on the findings, Mathematics teachers were recommended to take control over the students and improve students’ perceived control and confidence value during Mathematics evaluation so that their emotional condition could be well-controlled. Therefore, they could acquire good achievement and the learning objectives could be attained.
Preservice teacher belief on nature of mathematics and mathematics teaching and tearning: a quantitative study
Authors: Pagiling S L , Palobo M , Mayasari D
Published: March 2021

A quantitative study aims to investigate preservice teacher’s beliefs in mathematics and mathematics teaching and learning. The participants were 103 preservice mathematics teachers who were studying at the Musamus University of Merauke. The TBTP questionnaire was used to measure the beliefs of preservice teachers. The results showed that there were differences in the beliefs of preservice teachers when teaching in classes dominated by high ability students and low ability students. Preservice teachers tend to have platonist beliefs when teaching in high ability classes and when teaching in low ability classes preservice teachers have instrumentalist beliefs. Most preservice teachers have instrumentalist beliefs in mathematics. The implications of the study provide recommendations for teacher educators to change the beliefs of preservice mathematics teachers into problem-solving views.
Implementation of two stay two stray (TSTS) learning model to improve college students’ learning activities on geometry course
Authors: Respati P , Qohar A
Published: March 2021

College students’ learning activities need to be improved nowadays. In this study, based on the results of research involving 34 college students, there were only 5 students who actively expressed their opinions. This study is addressed to improve the students’ learning activities in Introduction of Geometry: Trapezoidal and Proportion. Learning model used was Two Stay Two Stray (TSTS) learning model. The characteristics of this learning model is suitable to improve students’ learning activities. Research subjects in this study was 34 college students of Mathematics Education Department Offering A school year 2019/2020. This study used Classroom Action Research (CAR) by using data collection tool in the form of Student Activity Observation Sheet. Based on the observation of classically done data analysis, it can be concluded that there were improvements in students’ learning activities. In Oral Activities, the activeness percentage of Cycle I was 83.82%, meanwhile the activeness percentage of Cycle II was 90.90%. In Writing Activities, the activeness percentage of Cycle I was 83.82%, meanwhile the activeness percentage of Cycle II was 91.17%. In Emotional Activities, the activeness percentage of Cycle I was 82.35% and the activeness percentage of Cycle II was 86.02%. Therefore, implementation of TSTS learning model is proven to improve college students’ learning activities on geometry course materials.
Student’s learning obstacle on understanding the concept of prism surface area
Authors: Aziiza Y F , Juandi D
Published: March 2021

This study was a preliminary study to develop a didactic design of the concept of a prism surface area. This study aimed to identify the learning obstacle experienced by students on the material of a prism surface area. The learning obstacle was obtained based on the ability test of the respondents, interviews, and documentation to students who had studied the material of the prism surface area. The method used was a qualitative method with data triangulation. This study involved 52 students in the 9th grade at one of Junior High Schools in West Bandung Regency and a teacher as a participant. The learning obstacle found in this study were an ontogenic obstacle, epistemological obstacle, and didactical obstacle. The ontogenic obstacle found was that students had difficulty in determining the names and elements of the prism, in which the difficulty was caused due to forgetfulness, doubt, and misconception of the prism surface area. The epistemological obstacle found was that students tended to memorize the definitions and formulas of the concept of the prism surface area, so they did not understand the concept as a whole. The didactical obstacle found was that the learning process was procedural and did not consider the difficulties and misunderstandings experienced by students while learning, as well as the lack of experience to construct geometric shape models, such as prisms.
REACT strategy toward mathematical communication abilities of madrasah ibtidaiyah students
Authors: Nuriah S , Sobarningsih N , Mahmud M R
Published: March 2021

Mathematical communication skills are one of the important future competencies possessed by students. Based on a preliminary study conducted on students in one of the Madrasah Ibtidaiyah shows that most students have difficulty communicating mathematical ideas. This study aims to figure out students’ mathematical communication skills on the subject of the volume of cubes and cuboids for the students taught withe the Relating, Experiencing, Applying, Cooperating and Transferring (REACT) strategy were better than those who taught with conventional learning. The research method used was a quasi-experimental design of The Nonequivalent Pretest-Posttest Control Group Design conducted on fifth grade students in one of the Ibtidaiyah Madrasahs in Bandung Regency. Based on the results of the study concluded that the mathematical communication skills of students who get learning with REACT strategies are better than mathematical communication skills of students who obtain conventional learning.
Development of integrated science textbooks on local potential food Bakpia for junior high school
Authors: Nisa W M , Wilujeng I
Published: March 2021

This study aimed to (1) determine the feasibility of developed science textbooks by expert validators; (2) knowing the results of the readability test by junior high school teachers and student. This research was a development study used a 4D modification model which consist of define, design, develop, and disseminate. However, this development was carried out until the develop stage. The product was validated by a material expert and media expert validator. The readability test was conducted by three science teachers and fifteen junior high school students. Data were collected using a validation and readability test questionnaire. Technical analysis of data used quantitative descriptive percentage analysis. The results showed that the feasibility of the material was 81.26% with very good criteria, the percentage of the student’s media feasibility was 89.06% with very good criteria the percentage of the teacher’s media feasibility was 91.67% with very good criteria. The percentage of readability test results by the science teacher was 96.35% with very good criteria, and the percentage of readability tests by junior high school students was 85.67% with very good criteria. As a whole the science textbook integrated the local potential of bakpia can be used in the science learning process.
Identification of students’ misconception in cell at first grade of senior high school
Authors: Suhel A F A , Rusyati L
Published: March 2021

This study aims to identify the misconception of the students’ in biology learning especially in cell type and general characteristics of cell at senior high school level. By using data profiling, the data were collected from 31 first grade students (15-16-year old). The analysis of students’ misconception used the instrument of AAAS Science Assessment. The item consists of 31 items of multiple choices questions and one open-ended essay question. The result obtained then processed by analysing the students’ answers for each item. The results showed that 51% of students’ understanding in type of cells and its general characteristics has experienced misconception. So, we can say that students’ understanding of cell concepts in first grade senior high school still low. It would be better to conduct further research to find out the causes that influence students’ misconceptions in understanding cell concept.
Level of sustainability awareness: where are the students’ positions?
Authors: Ridwan I M , Kaniawati I , Suhandi A , Samsudin A , Rizal R
Published: March 2021

Education for sustainable development (ESD) is a concern for not only Indonesian government but also worldwide. To create sustainable education, every individual has the responsibility to keep ESD as valuable capital for today’s and future generations. The aim of this study to get information on the level of awareness about sustainability in protecting planet Earth. In addition, This study aims to work out the extent of sustainable awareness within the concept of sustainable development education among pre-service physics teacher based on gender at one of the universities in Tasikmalaya. Data collection was administered employing a closed questionnaire. The results showed that the sustainability awareness of students with an average value of 0.77 was in the high criteria. However, the sustainability practice awareness category includes the standards of rarely done. In addition, the sustainability awareness of female students is relatively higher compared to male students with percentage ratio of 78.1% and 75.5%. In conclusion, although they have a high level of sustainability awareness, students are “still less effective” in the category of “sustainability practice awareness with performance” and “practice some attitudes in making practices that support sustainable development”.
Profile of teachers’ integrated science curricula that support by intelligent tutoring systems
Authors: Gunawan K D H , Liliasari  , Kaniawati I , Setiawan W , Rochintaniawati D , Sinaga P
Published: March 2021

Learning innovation by involving technology has helped the quality of education according to the concept of the Internet of Things (IoT). Intelligent tutoring systems are form of that support for science learning through science teacher competency improvement programs. This study aims to describe the types of science integration supported by ITS. A total of 29 science teachers joined this program which was implemented in blended learning. The science teacher lesson plan products were analyzed descriptively. The results show that the development of integrated, immersed and networked type lesson plans is in accordance with innovative learning, because of the scope of integration, learning themes, and appropriate learning activities. These results also demonstrate the effectiveness of using ITS to assist teachers in providing educational suggestions for developing integrated science learning.
Development of android-based digital determination key application (e-KeyPlant) as learning media for plant identification
Authors: Puspa V R , Hidayat T , Supriatno B
Published: March 2021

The background of this research was the limitation of interactive multimedia for identifying the plants. One method for identifications is using a determination key that contains statements between two alternative choices and then followed by a further choice that will ultimately lead to the level of the taxonomy. However, the available key determinations are based on websites which can only be accessed if the internet is available and only in English, Belgian and Korean. This research produce an interactive multimedia application (e-KeyPlant) as a media for identifying seed plants. The method used was ADDIE (Analyze, Design, Develop, Implement, Evaluate) approach. The population was oppinion of e-KeyPlant involved 50 respondents (biology lecturers, graduate students, undergraduate students, laboratory assistants majoring in biology education and biology teachers). The data obtained was a quantitative data from the results of validation, questionnaire responses to satisfaction of the application used. Validation by experts on the application resulted in an average value of 89,74% (content) and 83,06% (design). This study concludes that the e-KeyPlant application can be used as a learning media for identifying seed plants and suitable for use in learning.
Designing a field trip: The role of multiple intelligence and scientific reasoning
Authors: Fadilloh H , Rustaman N Y , Sanjaya Y
Published: March 2021

Field trip is one learning method that provides direct experience for students to be able to interact with the surrounding environment. In Biology class, field trip is one of the keys when students want to observe natural phenomena. This study aim to identify student multiple intelligences and scientific reasoning profile as a reference in designing a field trip for high school students on ecosystem topics. The subjects in this study were 55 students from two classes of 10th grade in even semester with purposive sampling. Data collection using Teen MIDAS (15-19 years) to identify student multiple intelligence and TOLT instruments for student scientific reasoning profile. The results of this study indicate that there are 3 types of intelligence that are most prominent, namely naturalistic, interpersonal and logical-mathematical as for future reference to dividing groups based on these three intelligences. In addition, student scientific reasoning which was found to be at 66% formal operation, 22% transitional and 12% concrete operation stage indicated that the design of the field trip that had to be prepared to have a level of analysis with one or two variables. There are still many students who have not been able to solve combinatorial reasoning. Thus it can be concluded that the best field trip design for this group of student is a design with worksheet that featured naturalistic, interpersonal and logical-mathematical with no more than two variables involved.
Local potential of mangrove Pangkal Babu Kuala Tungkal Jambi Province as a source of learning biology
Authors: Fitriyani H. , Adisendjaja Y. H. , Supriatno B.
Published: March 2021

Mangrove forest in Indonesia one of which is located in West Tanjung Jabung District Kuala Tungkal Jambi Province is the ecosystem of mangrove Pangkal Babu. This ecosystem is one of the local potentials of this area. Many mangrove ecosystem provide benefits. The many benefits of this mangrove ecosystem cause the ecosystem to suffer damage so there is an effort to overcome it. The solution is a local potential based education. Local potential based education is an education based on the surrounding environment so it can create more meaningful learning. Biology is a subject that can be developed to improve environmental knowledge and a good attitude for the environment. The method used is an exploratory descriptive method with data retrieval techniques in the form of interviews and observations. Data processing techniques carried out descriptively. These results are seen from the condition of abiotic, biotic, adaptation, and interaction. Observed abiotic conditions are temperature, salinity, pH, and DO/dissolved oxygen. The abiotic condition found 19 species of mangrove plants and several types of animals. This local potential can be used as a source of learning biology, especially on ecosystem material.
The development of Musi estuary ecosystem alternative teaching materials as supplementary books for biology learning in high schools
Authors: Handayani S , Adisendjaja Y H , Kusnadi
Published: March 2021

Student textbooks were generally limited with examples and were also seldom found relevant to students’ daily lives which often caused biology learning not to run contextually. Meanwhile, there were many contexts around students that could be used as references or learning resources. One of the local potentials found on the east coast of South Sumatra was Musi estuary. There were many potentials such as the wealth of biotic components and their abiotic factors. Therefore, we needed teaching materials that could complete the use of textbooks in schools, this aimed to help students more easily understand concepts through relevant contexts. The development of teaching materials used the ADDIE approach; analysing, designing, developing, implementing and evaluating. Making alternative teaching materials for Musi estuary ecosystem had arrived at the development stage followed by evaluating each of the previous stages. This research was using the validation questionnaire of the National Education Standards Agency (BSNP) including aspects of the feasibility of content, the feasibility of language, the feasibility of presentation and the feasibility of graphics. The teaching material has validated by 3 experts and 3 high school Biology teachers. Based on the results of material validation by experts it was obtained an average score of 3.13 (77.38%), and high school biology teacher 3.33 (83.17%), which then concluded that the alternative teaching material of Musi estuary ecosystem was discovered eligible to be used as a supplementary of biology textbooks on grade X for ecosystem learning material.
Identification of creative imaginations of biology education students based on the wartegg test
Authors: Ahyani A , Supriatno B , Surakusumah W
Published: March 2021

The purpose of this study is to identify the level of the creative imagination of biology education students in detail based on the components of creative imagination on the wartegg test. The study was conducted with a descriptive method at one of the state universities in Bandung. The research sample was 86 of 121 undergraduate students in biology education in the 7th semester of 2019/2020 who took the bio entrepreneur course. The instrument used was the wartegg test which has a high-reliability score (0.74) and high validity. The results showed that 48% of students had creative imagination in the low category, 28% in the very low category, 17% in the medium category, 5% in the high category, and 2% in the very high category. The components that dominate the score of creative imagination are expansion components (31%), fancy (19%), and symbolism (13%). High scores obtained by students are 20% in the dark shading component. In general, the category of students’ creative imagination is in a low category. Students’ creative imagination is dominated by sensitivity and openness, healthy creative imagination, beyond the environment, still realistic, and balanced with the values of life. Most students have a strong and consistent creative imagination.
Inquiry-based learning and problem-based learning : which one has better effect on students critical thinking skills profile of thermochemistry?
Authors: Styawan A , Arty I S
Published: March 2021

This study aims to know the comparison of students’ critical thinking skills profiles in classes that apply the inquiry-based learning model and students in classes that apply a problem-based learning model. The profile of the critical thinking skills was analyzed with the descriptive quantitative method. This research was conducted at SMA Negeri 1 Tempilang, West Bangka Regency, Bangka Belitung Islands Province. Sampling was done by random technique. The total sample used was 50 students divided into two research classes. Class XI MIPA 1 applies the inquiry-based learning model while Class XI MIPA 2 implements a problem-based learning model. The results of the analysis showed that class XI MIPA 1 had a better critical thinking skill profile compared to class XI MIPA 2 on all critical thinking skills indicators. Therefore, it can be concluded that the inquiry-based learning model has a better effect on the profile of students’ critical thinking skills on thermochemistry material than the problem-based learning model.
Learning nucleophilic substitution reaction based on 3D-visualization to improve students’ critical thinking ability
Authors: Adiska D N , Liliasari  , Musthapa I
Published: March 2021

The purpose of this study was to identify the effect of using 3D-visualization on learning nucleophilic substitution reaction to improve students’ critical thinking ability. This study used quasi experimental pretest and postest design. This study involved 68 students from two different universities in West Java. University A have 37 students and university B have 31 students involved at the study. The critical thinking ability test instrument consists of 9 multiple choice questions with reasons. The results show that learning using 3D-visualization on nucleophilic substitution reaction can improve students’ critical thinking ability. Based on the N-gain result, students of the university A better than the university B, except on ‘identifying/formulating criteria to assess posible answers’ indicator of critical thinking ability. It should be increase students’ critical thinking skills especially in the university B through further effort.
Critical thinking disposition inventory: Its validity and reliability
Authors: Redhana I W , Wahyuni N P
Published: March 2021

In everyday life, we are always faced with problems. In trying to solve problems, we need higher-order thinking. One of higher-order thinking is critical thinking. Critical thinking includes critical thinking dispositions and skills. The critical thinking dispositions are an attitude or soul to develop critical thinking skills. This study aimed to describe the validity and reliability of the inventory of critical thinking dispositions. Testing of inventory used survey research. The testing was conducted at the public senior high schools in Buleleng Bali Indonesia. The population of the study was 4579 students from natural science classes. The samples were determined using the proportionate stratified random sampling technique. By the margin of error of 5%, the minimum number of samples needed was 355 people. By considering a return rate of 80%, the number of samples drawn was 444 people. The number of questionnaires returned by the students was 443. The data obtained were analyzed using the moment product correlation statistics and Cronbach’s Alpha to determine the validity and reliability of inventory, respectively. The results showed that the instrument’s validity is in the range of 0.095 to 0.756. Meanwhile, the reliability of the instrument is 0.727. There are two invalid items from 62 items. It can be concluded that this inventory of critical thinking dispositions can be used to measure the critical thinking dispositions of senior high school students.
A review of three levels of chemical representation until 2020
Authors: Luviani S D , Mulyani S , Widhiyanti T
Published: March 2021

This article is a review articles on three levels of chemical representation until 2020. The method used in this research is document analysis. We obtained 72 articles published within 11 years (therefore, 2009-2020) that discussed the level of chemical representation. The results obtained were 50.67% of researchers using the term macroscopic, submicroscopic, and symbolic levels which were different from the original ideas of Johnstone. In addition, we found 15 new terms for 3 levels of chemical representation. Furthermore, the scope of macroscopic, submicroscopic, and symbolic levels becomes richer and broader.
Research on educational games in STEM area 2010-2020: a bibliometric analysis of literature
Authors: Novia N , Permanasari A , Riandi R
Published: March 2021

Research on educational games in STEM area have proliferated over the past decade. Various topics on educational games in STEM settings have emerged, showing the complex, dynamic and multi-disciplinary nature of the field. In this context, there is a need for an extensive, thematic overview of related studies for a better understanding of this STEM domain. Using co-word analysis and text analysis methods, this study presents a bibliometric analysis of 260 articles on educational games in STEM area published in academic journals and conference proceedings from 2010 to 2020. The results identify some research themes in the field, which are further categorized into computational thinking, game design, simulation and projects. By incorporating the analysis results with relevant reviews, this study offers a comprehensive picture and a holistic view of educational games in STEM area, and suggests directions for further work.
Mathematical teachers’ knowledge of STEM-based education
Authors: Rahman N A , Rosli R , Rambley A S
Published: March 2021

The challenge of the industrial revolution 4.0 (4IR) demands that future generations have high knowledge, skills, and capabilities in technology. A country’s competitiveness depends on STEM human capital as 4IR develops. Therefore, more organized and holistic actions need to be taken to ensure that the STEM level of mastery is enhanced among students. High demand for STEM human capital is a challenge to most developed countries in the world. Teachers are a crucial medium in the implementation of STEM education in schools. Mastering the knowledge of teachers in STEM education will provide positive input to students’ interest in learning. The purpose of this study was to identify the mathematics teacher’s knowledge of STEM-based education. A quantitative study was conducted on 66 teachers - who teach STEM subjects in high school. Twenty-three of them are math teachers. The findings show that these teachers know STEM education at a moderate level. The implications of this study indicate that the mastery of teachers ‘knowledge of STEM education will stimulate students’ interest in STEM education. Future studies can explore, the factors that influence teachers’ knowledge of STEM education in terms of teacher preparation and in-service teacher professional development programs.
System thinking as a sustainable competency in facilitating conceptual change through STEM based learning in biology
Authors: Rustaman N Y
Published: March 2021

Pro-contra about concept mastery in STEM learning inspired this study to encounter conceptual change and STEM-project at the same time using R and D at different educational (junior, senior, university) levels. System thinking was chosen as medium to combine conceptual change and STEM learning, as it was found as part of Scientific Literacy in PISA and STEM approach, and as a UNESCO competency for Education for Sustainable Development. Groups of students from different levels of education were involved as research subjects. Certain consideration in choosing the biology topics and pre-posttests (concept mastery and system thinking skills) was administered for all level. Using system thinking oriented learning material it was reported that 7th graders can understand (plant & animal) cells structure well, no misconception for new concepts (prokaryote, plant tissue system), as they experience EDP in STEM-project and produce cell models. Conceptual change in high schools still resulted in misconception when the pre-post tests were taken once, but not for pre-post tests taken in each meeting. Topic choice and specific learning material for STEM based learning with system thinking oriented are very important to have complex system topic that enable to develop three types of system thinking.
Improving Science Literation and Citizen Literation Through Thematic Learning Based on Ethnoscience
Authors: Atmojo Setyo Eko , Lukitoaji Beny Dwi , Muhtarom Taufik
Published: March 2021

This study aims to improve the scientific literacy and citizenship literacy of elementary school students through Ethnoscience-based thematic learning. This research method is experimental research with a quasi-experimental design type—data collection techniques using test techniques, namely science literacy tests and citizenship literacy tests. Based on the results of the post-test analysis of data Literacy of science obtained t value = 3.781> t table = 1.998 and t-test results of the test of citizenship literacy got t value = 4.971> t table = 1.998. It means that there are significant differences in scientific literacy and civic literacy in the experimental and control groups. While the N value of scientific literacy gain in the control group is 0.43 (moderate) while in the experimental group is 0.73 (high) and citizenship literacy in the control group is 0.34 (medium) while in the experimental group is 0.73 (high). Based on these results, it can be concluded that there was an increase in scientific literacy and high citizenship literacy in the experimental group and increased science literacy and moderate citizenship in the control group.
The Appropriate Technology in Cultivating Mushrooms by Street Children In Hafara
Authors: Purwanti Ari Retno , Siswanta Lilik
Published: March 2021

The purpose of this study was to determine the application of appropriate technology in mushroom cultivation by street children in Hafara. This research method with a qualitative approach with phenomenological methods. Collecting data by observation, interviews, and documentation. Observations are carried out in a participatory, real, disguised, and unstructured manner to ensure that the object in this study is an informant in the location to be studied. Interviews were carried out by random sampling to obtain data and information that could be used in this study. Information can be obtained from the manager of the Hafara social institution, 2 caregivers / coaches and 4 street children who live in the Hafara social institution to obtain information on appropriate technology in mushroom cultivation by street children in Hafara. The appropriate technology in mushroom cultivation by street children in Hafara is very simple and uses easily obtained raw materials. Spraying leri water (washing rice) is carried out after the fungus appears, it will increase fertility so that the mushroom yield is more, so the money earned from the mushroom harvest is more. It is hoped that the recommendations for mushroom cultivation in Hafara can be widely marketed in collaboration with relevant agencies both nationally and internationally.
An Analysis of Online Shoppers’ Acceptance and Trust toward Electronic Marketplace using TAM Model
Authors: Prakosa Adhi , Sumantika Ahsan
Published: March 2021

Changes in technology affect business activities. The presence of the internet opens opportunities for sellers to expand their marketing reach. E-marketplaces can be utilized by sellers to broaden the marketing reach of their products. From the consumer side, the presence of the e-marketplace presents many choices in buying goods. The e-marketplace makes it easy for buyers and sellers to deal with products. This study aims to evaluate attitudes toward online shopping. Perceived usefulness, perceived ease of use, and trust as independent variables. Attitude toward online shopping as a dependent variable. Two hundred buyers in one of the biggest e-marketplace in Indonesia as analysis subjects to complete the questionnaire in this study. Multiple regression analysis to test the research model. The results show that perceived usefulness, perceived ease of use, and trust affect online shopping attitudes.
Experimental Study of Electrode Design and Configuration for Bioimpedance Measurement
Authors: Nur’aidha Amalia C. , Kumarajati Dhananjaya Y.H
Published: March 2021

Each material has different electrical characteristics. One of the electrical characters of materials is impedance. This characteristic used to specify the components of the material. To determine the impedance value of materials frequently used method is the injection of current through a pair of electrodes. This study will make effective electrode designs. The electrode designs used are circular with 1mm, 5mm, and 15mm diameter variations, with 3mm, 7mm, and 11mm configurations. The electrode material used is a copper plate (PCB). The results of the graph on mineral water show that the 11mm configuration produces a logarithmic graph. This result is due to the total impedance of mineral water affected by the resistance component and capacitance at the electrode. The measurement of sugar solution shows that 5mm diameter is more sensitive than 15mm diameter. Then the effective electrode design for impedance measurement is 5mm diameter with an 11mm configuration.
Black Box Testing on ukmbantul.com Page with Boundary Value Analysis and Equivalence Partitioning Methods
Authors: Sholeh Muhammad , Gisfas Irmah , Cahiman  , Fauzi Muhammad Anwar
Published: March 2021

One of the most important aspects in information system development is system testing. System testing aims to evaluate the capabilities of the application and determine whether the program developed is in accordance with the expected results. It also aims to ensure that the application is of the best quality and is maintained. In this study, system testing was conducted on ukmbantul.com application. ukmbantul.com is a website that is used to promote the potential of craftsmen / home-based businesses in Bantul. The testing is done by black box testing and all data input is tested with various data that are not in accordance with the rules. Black Box Testing is done by testing the application without seeing / knowing the internal structure of the code or program. The research was carried out using boundary value analysis and equivalence partitioning methods. The results show that the development of ukmbantul.com has considered the limitations in data entry. The form used for the data entry process has been validated in accordance with the applicable limitations.
Media information technology games based on local cultural content
Authors: Permana Septian Aji , Purwanti Ari Retno , Hartanto Supri , Magiman Muhamad Maulana
Published: March 2021

This study aims to determine the effect of information technology game media on cultural content on learning motivation of Yogyakarta PGRI University students. This research was conducted because there were still some students who had low motivation to learn, because some lecturers were inconsistent in the use of information technology game media. This study uses quantitative methods with a student population with a sample of 74 students. This study uses questionnaire instrument data collection techniques to obtain data media games and information and learning motivation. The analysis technique used in this study is simple regression analysis. The results of this study concluded that there was a positive and significant influence between technology and media games based on local cultural content on the learning motivation of Civics Education students class of 2019/2020. The results obtained with a value of rxy 0800> rtable 0.227 which means that the information technology game media based on local cultural content can affect student motivation.