bluuebunny/crossref_metadata_2025_split huggingface dataset:
The analysis of IRS-7 using the Rasch model on material elasticity
Authors: Bohori M , Liliawati W , Suwarma I R 
Published: March 2021

Abstract
IRS-7 is the abbreviation of 7 (seven) indicators of representing information skills. This study aims to analyze the students’ scientific communication skills regarding the ability to represent information consisting of 7 indicators is: 1) schemes to graphs, 2) verbal to the scheme, 3) verbal to mathematical, 4) schemes to diagrams, 5) schemes to mathematical, 6) graphs to verbal, 7) graphs to mathematical. The skill of representing information is essential in the fourth revolution era and globalization era. This study used a case study approach with a post-test group research design. The sample of this study was high school students in grade XI, as many as 6 male students and 19 female students with an average age of 17 years old. Data were analyzed using Rasch model with the Software Ministeps assistance Version 4.4.1. The results showed that the students had some weaknesses in representing information from graphs into mathematical form 3.4 logits, graphs into verbal forms 3.8 logits, and from images into mathematical forms 5.2 logits. IRS-7 analysis of students on material elasticity can be analyzed properly using the Rasch model.
Effectiveness of use direct learning models for higher order thinking skills of pre-service physics teachers
Authors: Haryadi R , Situmorang R , Khaerudin  
Published: March 2021

Abstract
The purpose of this study was to determine the higher order thinking skills of prospective physics teacher students at the Sultan Ageng Tirtayasa University through direct learning models. The method used in this study is a quasi-experiment with the design of one group pre-test and post-test. The subjects of this study were students of prospective physics teachers at Sultan Ageng Tirtayasa University consisting of 13 male students and 12 female students with an average age of 20 years. The instrument used in this study was a test of high-level thinking skills on magnetic electric material, in the form of 10 breakdown tests. Each question evaluates aspects of analysing, evaluating, create. The average N-gain results in the physics teacher candidates at the Sultan Ageng Tirtayasa University were 0.37 in the medium category. So, it can be concluded that the higher order thinking by using the direct learning model of prospective physics teacher students at the Sultan Ageng Tirtayasa University is included in the medium category. Based on these results it shows that direct instruction learning model is quite effective to improve higher order thinking skills in learning physics, especially magnetic electric material.
Problems of online learning and the use of information and communication technology (ICT) in physics learning at Sumedang, West Java
Authors: Nurliani R , Sinaga P , Rusdiana D 
Published: March 2021

Abstract
This study investigates students’ and teachers’ perceptions of online learning problems and the use of Information and Communication Technology (ICT) in teaching and learning physics in high schools at Sumedang, West Java. The study population consisted of all high school students and physics teachers at one public high school in Sumedang, West Java. The sample was 69 students and 2 teachers selected from one public high school. The instrument used in collecting relevant data for this study was an online questionnaire consisting of 23 items that obtained information about the difficulties of online learning and the application of ICT in schools for learning physics. Data collected were analysed using frequency and percentage calculations. The results showed that online learning can simplify the learning process and mentoring besides ICT being able to broaden students’ insights about physics. However, there are several obstacles in online learning including the limitations of question and answer activities to friends or teachers directly, many assignments, and the lack of ICT facilities.
Real-time data acquisition of dynamic moving objects
Authors: Saputra H , Suhandi A , Setiawan A , Permanasari A , Putra R A 
Published: March 2021

Abstract
The problem frequently encountered in physics practicum activities is measuring instruments in limited reading data variable time of dynamic moving objects. In practical exercises needed the accuracy of measurement data to avoid a mistake in analysis and interpretation data. R-TDA of Dynamic Moving Objects measurement tool is expected to be a solution to overcome these problems. The electronic components used are Infra-Red Obstacle Sensor, connector cable, NodeMCU. The principle of this device is to send a recording time of modulo infrared to the cloud server and accessed via a smartphone and Personal Computer. The results show the sensor a responsive time of 6.8 x 10-11 seconds, and the effect of gravity acceleration of 9,70 m/s2 close to universal gravity acceleration 9,81 m/s2 with an average relative error of 1.22%. The R-TDA of Dynamic Moving Objects has a high response time and accuracy in recording the time of dynamic moving objects.
Critical thinking skills and science process skills in physics practicum
Authors: Firmansyah J , Suhandi A 
Published: March 2021

Abstract
The purpose of this article is to analyze the differences between indicators of science process skills and critical thinking skills in physics practicum. Both of these skills have the same indicators but certainly have differences. How to distinguish definitions and measurements of science process skills and critical thinking skills that are interrelated such as interpretation, inferring and predicting. These three indicators have different meanings in aspects of science process skills and critical thinking skills. The research method used is a literature review with descriptive analysis. The data used in this study are secondary in the form of articles, reports and books relating to science process skills and critical thinking skills in physics practicum. The data collection method used in this study is the documentation method. The analysis shows that the three intersecting indicators have different definitions and measurements. Therefore, in physics practicum, science process skills and critical thinking skills must be measured with different instruments and with different treatments. Critical thinking skills emerge after mastering content and concepts well and comprehensively, while science process skills are trained through the process to obtain physical concepts and content.
Development of circular motion experiment tool using sensor smartphone for high school students
Authors: Raharja E P , Ishafit  
Published: March 2021

Abstract
The growth of smartphone users in Indonesia can be a good potential for various fields, one of which is education. This research aims to produce a circular motion experiment tool using sensor smartphone in the horizontal and vertical position and find out its feasibility for use by high school students. The method of research used is research and development or R&D with the ADDIE development model (Analysis, Design, Development, Implementation, and Evaluation). The research result shows that the experimental tool has shown the influence of object distance directly proportional to centripetal acceleration when the angular velocity is constant. In addition, there is also a difference in tangential acceleration at the top of the circle and under the circle in a vertical position. In the questionnaire test, the average score of the feasibility of the experimental tool was 91.25% with a very good category. While the average score of module feasibility is 86.25% with a very good category. The average score obtained based on the response from students is 94.5% with a very good category.
Does reading comprehension competence determine level of solving mathematical word problems competence?
Authors: Hadianto D , Damaianti V S , Mulyati Y , Sastromiharjo A 
Published: March 2021

AbstractThis study aims to investigate the interaction between problem solving skills in mathematical words and reading comprehension. The method used is correlational by linking reading comprehension competence and ability to solve mathematical word problems. Participants were 300 children aged 9-10 (Grades 3 and 4) taken from 3 school clusters of low, medium and high categories from various aspects. Reading comprehension skills in text and children’s mathematical word problem solving performance are tested. The results showed that the ability to read comprehension had a very strong relationship with the ability to solve mathematical word problems. The ability to understand the relationship between words and words in a sentence that contains problems is crucial for students to solve mathematical word problems. The school cluster chosen also influences the level of children’s mathematical word problem solving ability and reading comprehension skills. From the results of this study, researcher recommend teaching reading and counting in elementary schools be carried out in an integrated manner.
Analysis of external factors affecting students’ achievement student of mathematics education of samudra university
Authors: Fadilah  , Priyanda R , Amalia R 
Published: March 2021

Abstract
The dominant external factors influencing student learning outcomes have been analyzed in this study. The participants of this study are year II and IV students of Mathematics Education FKIP Universitas Samudra in academic year of 2018/2019. Data collection used was questionnaire/questionnaire and interview. Approach and concept in this research using variable annotation with SPSS version 21. Interpretation of result of factor rotation indicate the formation of 3 factors together (main factor). The first to the third external factors that ranked first in the factors that are developing the results of the study of mathematics students FKIP Universitas Samudra in sequence is the community environment, school buildings, and campus environment.
Symbol sense characteristics for designing mathematics tasks
Authors: Jupri A , Sispiyati R 
Published: March 2021

AbstractSymbol sense, an analogy of number sense in the symbolic world of mathematics, is an ability to give meaning to symbols, expressions, and formulas that involves many characteristics, including friendliness with symbols, an ability to examine symbol meanings, and skills to manipulate symbolic expressions. The characteristics of symbol sense are usually used, for instance, for designing symbolic algebra tasks, but are a bit rare for designing mathematics tasks in general. Therefore, this study aims to use symbol sense characteristics for designing mathematics tasks for secondary school students. To do this, using a design research method, we conducted a literature study to collect characteristics of symbol sense and to see possibilities of designing mathematics tasks in general. Next, we designed mathematics tasks according to the symbol sense characteristics. Finally, we provided possible responses of students for the designed tasks. The results of this study included six types of tasks according to the characteristics of symbol sense, including tasks on symbolic problems and word problems—which require translation into symbolic problems. In addition, we provided predicted responses to examples for each type of the tasks and suggestions for use in the learning and teaching process. For further investigation, we recommend to use the set of designed tasks for assessing student symbol sense ability.
Does math mini laboratory improve pedagogical content knowledge for prospective teacher of madrasah ibtidaiyah?
Authors: Pratiwi I M , Kariadinata R , Apriani L 
Published: March 2021

Abstract
Pedagogical content knowledge is the ability to convey learning on a specific content that each student of prospective teacher must have. To develop pedagogical content knowledge of the students we can use math mini laboratory approach. The aim of this study is to obtain a pedagogical content knowledge of prospective teacher for Madrasah Ibtidaiyah by using math mini laboratory in the mathematics education in Madrasah Ibtidaiyah focusing on course geometry. This research used pre-experimental methods. The population was all fifth semester students majoring in Madrasah Ibtidaiyah Teacher Education at UIN Sunan Gunung Djati Bandung. The sample obtained from 36 students of class A taken by purposive sampling. Data collected used tests performed t-paired tests with regard to the assumption of normality. The results showed there was differences in the average pedagogical content knowledge of students before and after learning with a math mini laboratory. Pedagogical content knowledge of students increased by 0.48 in the medium category. By using math mini laboratory, students not only learn the content of the material, but also they do practice for teaching.
Study ethnomathematics: revealing mathematics ideas on minangkabau traditional weaving songkets in pandai sikek
Authors: Enmufida  , Turmudi  , Hidayat A S 
Published: March 2021

Abstract
This study aims to prove a mutual relationship between mathematics and culture. Due to an assumption that mathematics does not have any relationship with each kind of culture. However, a study about ethnomathematics scrutinizes a group of culture as mathematical. This research takes place in Pandai Sikek. Tanah Datar Regency. West Sumatera. People in Pandai Sikek are the biggest producers of songket in Minangkabau. Pandai sikek still keeps on their culture tightly, one of them is the women of pandai sikek do the weaving hereditary. This research focuses on revealing a mathematical idea beyond traditional songket Minangkabau at Pandai Sikek. This study of ethnomathematics uses a qualitative approaching of an ethnography method. The data were collected through observation, interview and study documentation. The result of the research is to reveal a mathematical idea that is used by Pandai Sikek people on manufacturing songket that there are mathematic activities and geometry patterns in traditional songket pattern of Minangkabau. This research enlights people that mathematics has relationship with culture.
Analysis of mathematical communication abilities of senior high school students in linear programming material
Authors: Ali M K , Martadiputra B A P 
Published: March 2021

Abstract
This article is the result of research that aims to analyze the students’ mathematical communication abilities in mathematics to the subject of linear programming. The research was conducted using qualitative approach with case study method. The subjects were five high school students in Science program. Data communication students’ mathematical ability is obtained by using tests and interviews. The results showed the ability of students’ mathematical verbal communication is good because students can explain clearly and systematically to answer written in the worksheet. But the student’s written mathematical communication ability are lacking in explaining the mathematical model, the use of symbols is less precise, and the writing is less systematic.
Level of pre-service mathematics teacher’s reflective thinking
Authors: Ariany R L , Rosjanuardi R , Juandi D 
Published: March 2021

Abstract
Reflective thinking has been promoted in universities in recent years, is no exception for prospective mathematics teachers. Reflective thinking ability of prospective teachers needs to be identified as consideration for finding the right formula to improve reflective thinking skills in learning. The purpose of this study is to classify the reflective thinking abilities of prospective mathematics teachers. The research method used was a survey method. This research involved mathematics education students who had attended practical teaching courses. The instrument used was a reflective thinking questionnaire distributed online. As many as 85 students filled out the questionnaire through the Google form. Data analysis was performed by quantifying the results of the questionnaire, then calculating the frequency and interpreting it using predetermined criteria. The results showed that prospective mathematics teachers who had been categorized in reflective thinking were less than 50%. This shows that the improvement of reflective thinking ability for prospective mathematics teachers is still very much needed.
Analysis of the indicators forming the mathematical resilience of high school students
Authors: Yohannes  , Juandi D 
Published: March 2021

Abstract
When students learn to solve a problem in mathematics, they often face difficulties and challenges. The positive attitude of students in dealing and overcoming various problems that arise is known as mathematical resilience. Students with good mathematical resilience will be tough in solving various problems and will certainly get good learning outcomes. This study aims to analyze the variables that form the mathematical resilience of high school students. The subjects in this study were 110 high school students. The method used in this study is a quantitative descriptive method using Confirmatory Factor Analysis (CFA) techniques. Each respondent is given a mathematical resilience scale consisting of 25 statements which are the variables forming the mathematical resilience. The findings in this study indicate that seven main indicators that form mathematical resilience can be formulated in high school students. Each indicator is composed of several variables which are the constituent variables of the mathematical resilience ability. These indicators can be used as a foundation for further study of the mathematical resilience analysis of high school students.
Students’ structure sense ability in solving quadratic equation problems
Authors: Utami N S , Jupri A 
Published: March 2021

AbstractStructure sense is the ability of students to see any relation between symbols, to manipulate, and to use algebraic structures. This is considered an important ability for students as algebra is the core topic within high school mathematics. An important skills need to be acquired by students in algebra is solving equations, such as solving quadratic equations. To address this, this research aims to understand students’ structure sense ability by investigating strategies used in solving quadratic equations of the form of a square of difference of two variables. To reach these aims, a qualitative descriptive method was conducted in the form of four quadratic equation tasks done by twelve Senior High School Students from one of senior high schools in Bandung. In this study, each student was required to work on each task using two different strategies if possible. The result from the students’ answers informed that the majority used structure sense strategy. However, there were mistakes conducted by fifty percent and more students completing both the procedural and structure sense strategy. In conclusion, we found out that students’ structure sense ability is good despite students experienced some difficulties, whether they used the procedural strategy or involved their structure sense.
Students’ difficulties in solving mathematical creative thinking problems on derivative application
Authors: Hilmi Y , Juandi D , Usdiyana D 
Published: March 2021

Abstract
This study aims to analyze the difficulties experienced by students in solving mathematical creative thinking problems. Twenty six students at the eleventh grade of Mathematics and Natural Sciences program in a senior high school in Tasikmalaya were involved as research subjects. The research method used in this study was descriptive qualitative in order to describe the difficulties experienced by students in solving creative thinking problems on the topic of derivative application. Problems that are designed refer to mathematical creative thinking indicators including fluency, flexibility, elaboration and originality. The results of the study concluded as follows (1) on the fluency indicator, the majority of students had smoothly applied the concept of function derivatives so that no difficulties were identified, (2) on the flexibility indicator, students difficulties applying other concepts as a different way, (3) on the elaboration indicator, students difficulties in constructing the formulas used and (4) on the originality indicator, students difficulties in representing the shape of images into mathematical equations.
Literature study: the role of abstraction ability to strengthen students early knowledge in mathematics learning
Authors: Nurjannah S , Kusnandi  
Published: March 2021

Abstract
This study aims to determine the extent of the role of the ability of abstraction to strengthen students early knowledge in learning mathematics. This type of research is a literature study. The type of data used is secondary data from articles related to the study. Data collection methods are by reading the appropriate arithmetic study, then classified more specifically. Next identify the role of the ability of abstraction to strengthen students early knowledge in learning mathematics. From the results of identification then analyzed through the process of categorizing and classifying. The final step is to describe the results of the literature review and conclude it. The results of this paper indicate that the ability of abstraction is very important because it is closely related to the inculcation of basic mathematical concepts that are used as early knowledge or prerequisites of studentss in learning new material in mathematics learning and studentss can demonstrate their mathematical ideas, make connections between concepts and can manipulate objects that are abstract.
The implementation of direct instruction assisted by incomplete handout to increase conceptual understanding
Authors: Tunde J , Listiani T 
Published: March 2021

Abstract
Facing industry 4.0 in the world of education is the responsibility of the teacher in preparing students well. One of them is to build their understanding of learning at school. Mathematics as one of the subjects that always exists in every level of education is very helpful for students in developing systematic and critical thinking, this is in accordance with the needs of students in industrial age 4.0. However, mathematics also has sufficient conditions, namely the need for an understanding of mathematical concepts. The reality found in schools in this study is the understanding of students’ low concepts. Therefore, this study aims to improve the understanding of students’ concepts through the application of Direct Instruction assisted by incomplete handouts in the topic of composition and inverse function. The research model used is Class Action Research according to Pelton. The research subjects were 21 students of grade XI in one of the West Jakarta High Schools. The data sources used are observation sheets and test sheets. Based on the results of the data analysis, it can be concluded that the implementation of Direct Instruction assisted by Incomplete Handouts can improve students’ conceptual understanding.