bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between the use of the internet as a learning resource and physics learning outcomes
Authors: Halim A , Soewarno  , Yani E , Elisa  , Mahzum E , Farhan A , Irwandi I 
Published: May 2021

Abstract
The purpose of this study was to determine the relationship between the use of the internet as a learning resource and physics learning outcomes. This research is a quantitative study using the correlation method. The population in this study were all 105 students of class XI IPA Public High School 6 Banda Aceh, while a sample of 31 students was selected using random sampling techniques. Due to survey research, the data collection instruments used questionnaires and documentation. Data processing was performed using the Product Moment correlation test and the hypothesis was tested using the t-test. Based on the results of the calculation of data analysis, the value of the correlation coefficient r = 0.2646 (low correlation) and the tested hypothesis with a significant level α = 0.05 and degrees of freedom = 31-2 = 29 is 1.699, obtained t-count < t-table is 0, 4762 < 1, 699. Therefore, it can be concluded that there is no significant correlation between the use of the internet as a learning resource and the physics learning outcomes of class XI students of State Senior High School 6 Banda Aceh.
The lasso binary logistic regression method for selecting variables that affect the recovery of Covid-19 patients in China
Authors: Rusyana A , Notodiputro K A , Sartono B 
Published: May 2021

Abstract
The Lasso regression performs the least squares method with the l
1-constraint. This is a particular type of regularization which adds a penalty equal to the absolute value of the magnitude of coefficients that can result in sparse models with few coefficients in which some coefficients can become zero and be eliminated. Larger penalties result in coefficient values closer to zero, which is ideal for producing simpler models. In this study, the lasso method has been applied to select variables affecting the recovery of the Covid-19 patients. The data consisted of the number of patients treated in several hospitals or clinics in China, recovered patients, demographics, comorbidities, symptoms, and treatment. The performance of the lasso binary logistic regression was compared with the full model of logistic and the stepwise logistic regression. The results showed that the number of independent variables selected by the lasso method was larger than those selected by the stepwise method. It has also been showed that coefficient values of variables produced by the lasso method were smaller than those produced by the stepwise. The independent variables that affect the cure rate of covid-19 patients with the lasso are gender, comorbidities, diabetes, cardiovascular, cough, fatigue, diarrhea, platelet count and antibiotics.
SEIR model simulation on the spreading of Ebola virus between two regions
Authors: Rohmah A M , Rahmalia D 
Published: May 2021

Abstract
In this study, we formed one of epidemic models that describe the spread of Ebola virus disease between two regions in the mathematical model known as SEIR epidemic model. For constructing the mathematical model, it is necessary to understand the phenomenon of the spread of the Ebola virus such as that the number of infected populations in one region does not only depend on the number of infected individuals in one region but also by individuals traveling from one region to another. Based on this phenomenon, we constructed the SEIR mathematical model to determine the dynamics of the spreading virus. We computed the Basic Reproduction Number to determine the stability of the spreading virus. We applied the numerical simulation using the Runge-Kutta Order 4 method to illustrate the results obtained. The simulation results show that region B has a higher spread than region A, because the number virus transmission in region B is higher than that in region A based on the Basic Reproduction Numbers.
The effect of demographic variables on mathematics teachers’ TPACK: Indonesian context
Authors: Mailizar M , Hidayat M , Artika W 
Published: May 2021

Abstract
In Indonesia, teachers are required to integrate digital technology in the secondary school mathematics classroom. Therefore, it is necessary to examine mathematics teachers’ technological, pedagogical and content knowledge (TPACK) according to their demographic background. The purpose of this study was to examine Indonesian mathematics teachers TPACK and investigate if TPACK levels are significantly different in terms of gender, teaching experience, the level of schools and teacher level of education. We conducted a quantitative study with a crosssectional survey design. Data were collected from 210 mathematics teachers and analyzed by ANOVA. This study suggests that there were significant differences in teachers’ level of TPACK according to their gender and the level of education. However, it was found that there was no significant difference in teacher level of TPACK according to their teaching experience and the level of schools. To a large extent, this study suggested that teacher demographic background determine their TPACK.
The effectiveness of STEM mentor-mentee programme: Recreational Mathematics among secondary school students
Authors: Hassan K B , Kamaruddin H H , Khalid R Md. , Azman H H , Kasim C M M 
Published: May 2021

Abstract
In effort to engage secondary school students’ awareness towards Science, Technology, Engineering and Mathematics (STEM), the Recreational Mathematics programme is designed. The main objective of this programme is to promote secondary school students’ interest towards Mathematics subject. The participants were grade 5 students from Sekolah Menengah Kebangsaan Sungai Burong, Kuala Selangor, Malaysia. This programme contained 7 Mathematics activities involved basic concept of algebra. For each activity, they were guided by Universiti Selangor’s facilitators and mentors. The effectiveness of Recreational Mathematics programme was assessed through these activities. Data on a total of 91 students was collected and it was found that 75% students agreed on the success of the programme management. More than half of the students were interested with the method guided by the facilitators and mentors. They enjoyed studying this subject through mathematical games and activities. Nevertheless, there is a challenge to be encountered while conducting this programme. It was found that 96% of the students were not aware on the importance of STEM and more specifically the significance of mathematical subject. These findings show that STEM activities should be continuously run especially to the students in the rural area.
The exploration of ethnomathematics based on Rapa’i Geleng dance as mathematics learning media
Authors: Musawwir A , Suryadi D , Kusnandi  
Published: May 2021

Abstract
Several abstract topics in mathematics are considered unrelated to contextual problems. This condition occurs because students cannot use some abstract mathematics topics which obtained at school in their daily activities. Hence, students are less interested in mathematics learning. Therefore, a bridge connecting formal school mathematics and the local culture is needed; one of them is ethnomathematics research method design. Ethnomathematics is a qualitative method design which examines the practice and elements of mathematics in a cultural group. One of the cultures which grows, develops, and is popular in Banda Aceh City is the Rapa’i Geleng dance. Rapa’i Geleng is a traditional Acehnese dance performed by shaking the head to the left and right regularly in a specific pattern following the rhythmic strains of the Acehnese traditional musical instrument called Rapa’i. The data were collected through document review, including videos, photos, notes, and interviews with experts. The results of the exploration show that there is a mathematical concept in the Rapa’i Geleng dance, namely number pattern. The sequence topic was observed from dancers’ regular movement based on their position. Consequently, this dance is supposed to be used as a learning medium to explain abstract mathematical concepts to the students.
Development of student worksheets assisted by GeoGebra application in improving higher-order thinking ability in mathematics learning
Authors: Ahmad H , Syamsuddin  , Febryanti  , Latif A 
Published: May 2021

Abstract
This research was motivated by the low thinking level of SMK Mega Link Majene students in solving higher-order thinking problems and inadequate math teachers using mathematics applications in the learning process. This study aims to develop student worksheets assisted by the GeoGebra application to develop higher-order thinking skills. This research is Research and Development (RnD) using the ADDIE model (Analyze, Design, Development, Implementation, and Evaluation). The participants were 27 eleventh-grade students of SMK Mega Link Majene. The instruments were tests, student activity observation sheets, teacher implementation sheets, and questionnaires. The student worksheets should meet the characteristic of helping students develop higher-order thinking skills–analyzing, evaluating, and creating. The results showed that the student worksheets were in the valid category. The worksheets also fulfilled the practicality category: the learning implementation was well-executed, and met the effectiveness categories: (1) the students’ high-level thinking ability in mathematics on average was in the high category; (2) student activity was in the very active category; and (3) student responses to the student worksheets assisted by the GeoGebra application obtained a very positive response. The findings implied that the development of student worksheets assisted by the GeoGebra application met the valid, practical, and effective criteria.
Mathematics self efficacy and mathematics performance in online learning
Authors: Negara H R P , Nurlaelah E , Wahyudin  , Herman T , Tamur M 
Published: May 2021

Abstract
Self-efficacy is the ability to perform in dealing with various activities. Changes in learning activities due to Covid-19 affect the learning environment which has an impact on selfefficacy. This study aims to obtain an explanation of mathematics self-efficacy and its relationship with mathematics performance in online learning. The sample in this study was the mathematics performance score on trigonometry, and the Mathematics self-efficacy score of 75 students at one of the universities in Mataram. This research is a correlational research. The research instruments were in the form of a Mathematics Self-efficacy questionnaire and mathematics performance scores on trigonometry. Data were analyzed using descriptive statistics to measure the mean and standard deviation of mathematical self-efficacy and analysis of the correlation between mathematical self-efficacy and mathematics performance. The results showed that most respondents had a high level of mathematical self-efficacy in online learning. Further analysis shows that there is a positive relationship between mathematics self-efficacy and mathematics performance, with an R coefficient of 14.8%. These results explain that variations in Mathematics performance can be explained by variations in Mathematics self-efficacy of 14.8%.
Creative thinking in mathematics: The capacity of vocational school students
Authors: Julizal T , Johar R , Hizir  
Published: May 2021

Abstract
Creative thinking is the capacity to generate ideas and new ideas. For vocational students, creative thinking is a basis for applying knowledge in their fields. Preliminary studies demonstrate that students experience difficulties in solving geometry and other problems that require creative thinking. This study aims is to analyze students’ creative thinking ability and the factors that influence it. This qualitative research was conducted at SMK (Vocational School) Negeri 1 Panga Aceh Jaya. It involved 113 students in answering the tests, in which six of them were selected to be interviewed. The research instruments were creative thinking tests and interviews. Data were analyzed descriptively. The results showed that 47.79% of students fulfilled the fluency indicator, while 49.78% met the originality indicator. The interview demonstrated that the lack of capacity was due to poor ability of fluent thinking. Students could not generate various or new ideas; therefore, they had difficulties reaching the originality level. Based on these findings, it is recommended to provide students with tasks or activities to develop their creative thinking skills.
Students’ relational understanding of the rectangle: a case study
Authors: Fitri K A , Prabawanto S 
Published: May 2021

Abstract
Relational understanding refers to know both what to do and why. In other words, relational understanding is an understanding of all the parts, how they relate, and why they are applied in the manner they are. Previous researches showed that students got difficulties in solving mathematics problem using relational understanding, especially in geometry problems. The purpose of this study was to investigate students’ relational understanding of the rectangle. The subjects of this study were four 8th graders. The data were collected using the student’s worksheets and interviews. This study was conducted in four meetings for every student. Every meeting was held for 30 minutes. The students’ understanding was appraised during the first ten minutes using the rectangle problem followed by interview for twenty minutes. The result of this study showed that the students do not have a relational understanding of the rectangle concept, but only instrumental understanding. Additionally, none of the students understands the relationship between both measurement and square with the area and perimeter of the rectangle concept. Furthermore, the result indicated that the relational understanding of a concept would be not understood well if one of the parts of the concept was ignored.
Implementation of ICT using Hawgent dynamic mathematics software to teach probability
Authors: Wijaya T T , Zhou Y , Purnama A , Yunita W , Mukhlis  , Salamah U 
Published: May 2021

Abstract
Technology is one of the media to enhance the quality of teaching. Technology can cause the teaching-leaming process to be more interactive and less tedious. According to Indonesia’s national examination result, the probability topic still got a low score in the past three years. This data is supported with the observation on junior high school students that students’ mathematics ability towards the basic concept of Probability is still low. This research aims to make education in education to guide Senior High School students to understand Probability. This study uses a mix of research development using the ADDIE model and quasi-experiment to analyze the class that uses technology Hawgent with the class that uses the conventional teaching method. According to this observation, researchers designed technology-based learning using Hawgent to support a Senior High School student to grasp the basic concept of Probability better and improve students’ learning outcomes. According to the validation and discussion, the Hawgent’s development as learning media has been validated by the media and material experts that falls in the excellent category or is applicable. The test result on the students also falls in the satisfying category.
Investigating students’ concept image in understanding variables
Authors: Siagian M D , Suryadi D , Nurlaelah E , Tamur M , Sulastri R 
Published: May 2021

AbstractConcept image is the overall structure associated with a concept, including all mental images and their related properties and processes. The concept image develops continuously through experience and changes as the individual faces stimulation and maturity. This study aims to analyze and describe the concept image of students in understanding the variable concept. This study is qualitative research with a phenomenological method. Data were collected by means of interviews and tests, then analyzed using the content analysis method. Participants involved in this study were ten eighth-grade students, while the object in this study was students’ concept image in understanding the variable concept. The findings revealed that most of the students understood a variable as something whose value is unknown, whilst some other students comprehend a variable as a substitute for something whose value is unknown. Understanding students’ thinking or concept image provides educators with an insight of the learning process aligned with students’ needs as a way to increase their understanding of mathematical concepts.
The effect of dynamic mathematics software on mathematical problem solving ability
Authors: Lan X , Zhou Y , Wijaya T T , Wu X , Purnama A 
Published: May 2021

AbstractMathematics is one of the fields of science that is very important for humans because all science is related to mathematics. One of the skills that should be learned and developed in mathematics is mathematical problem-solving ability. Problem-solving ability is highly needed because humans are always used in everyday life, both in education and daily life. In fact, students’ problem-solving abilities are lacking. This is because mathematical problems created by teachers are not based on indicators of problem-solving ability. Triangle is the important material of two-dimensional figures in elementary school. Teachers need to explain the basic concept of a triangle so that students can master a more difficult concept of a triangle. Dynamic mathematics software can help students grasp the concept of triangles. This study used a quantitative method. This study is a comparison between classes using Hawgent and using conventional methods. The subjects in this study were 72 seventh-grade students in Cianjur, Indonesia. Data were collected based on the results of the pre-test and post-test problem-solving ability. Based on the study results, the class using Hawgent is more good than the class that using the traditional method. Hawgent has been proven to help students understand triangle material.
Evaluation of online learning for mathematics education students
Authors: Siregar G M A , Hidayat  , Sukmawarti  , Siagian M D 
Published: May 2021

Abstract
The Covid-19 pandemic has affected most countries in the world, including universities in Medan, Indonesia. The spread of Covid-19 through social interaction requires the omission of face-to-face learning activities. Based on UNESCO data, 850 million students around the world, including Indonesia, study at home. For the mathematics education students in a private university in Medan, Indonesia, studying at home is a new phenomenon. Students and lecturers must change the learning method without preparation due to the sudden pressure. This article examined this phenomenon. The method used was descriptive qualitative to describe the process of implementing distance learning, the media, and evaluation used in e-learning during the Covid-19 pandemic for mathematics education students. Data collection was conducted by a questionnaire administered to 200 lecturers, interviews, and direct observation. The results show that Group Chat via WhatsApp was the most widely used online communication media, especially the Baby Boomers and Generation X, but millennials used online multimedia more frequently. The implementation has several shortcomings: the lack of interaction between instructors and students, students being asked to learn independently and do independent projects, teachers using more than one media not following the teaching-load hours or spending less time, and many experiencing technical obstacles.
The effectiveness of mathematics learning devices using learning models Interactive Conceptual Instruction (ICI) for junior high school students
Authors: Hanum E L , Anwar  , Hajidin  
Published: May 2021

Abstract
The mandate of the 2013 curriculum states that mathematics subjects aim to make students able to understand concepts. Teachers can plan learning by arranging appropriate learning tools so that students are able to understand the concept. One learning model that emphasizes the concept is the learning model Interactive Conceptual Instruction (ICI). This study aims to determine the effectiveness of mathematics learning tools using thelearning model Interactive Conceptual Instruction (ICI). This study uses the ADDIE development model which consists of five stages, namely analysis, design, development, implementation, and evaluation. Field trials were conducted in five meetings in class VII-B of SMPIT Nurul Fikri Boarding School Aceh. In determining the effectiveness of learning tools, this study uses Nieveen’s criteria. The development results show that the learning device developed using the Interactive Conceptual Instruction (ICI) is effective. The effectiveness is known based on the test of student learning outcomes with a minimum completeness of 85% and the positive response of students to learning using the ICI model. Thus, the learning device using the ICI model is suitable for use by teachers in learning, especially on social arithmetic material at the junior high school level.
The enhancement of student’s mathematical understanding ability through the Aptitude Treatment Interaction (ATI) learning model
Authors: Septiana Ella , Zubainur C M , Ramli M 
Published: May 2021

Abstract
Some teachers pay little attention to the difference in students’ abilities in conducting the learning. Fast-learners feel bored when learning because there is a tendency to repeat the lesson, while slow learners will feel left out because learning tends to be dominated by intelligent students. Therefore, the teachers must accommodate students with different abilities, using a learning model that treats students according to their abilities. The Aptitude Treatment Interaction (ATI) learning model is a solution to assist teachers in helping students master the material taught according to the student’s ability level. This study aims to determine the differences in the increase in the mathematical comprehension of students who take learning using the ATI model and those who take conventional learning. This study involved 51 Year 7 students from one private Islamic Junior High School in Banda Aceh, Indonesia, namely: 25 students in the experimental class and 26 students in the control class. The instrument used was a test of the students’ mathematical understanding ability. Students’ mathematical understanding ability was analyzed using an independent sample t-test. The results showed that students’ mathematical understanding ability who took learning using the ATI model was better than those who took conventional learning.
Characteristics of problems for developing higher-order thinking skills in mathematics
Authors: Makmuri  , Aziz T A , Kharis S A A 
Published: May 2021

Abstract
A large number of studies in the literature have illuminated the issue of higher-order thinking skills with different perspectives. The purpose of the study was to establish a synthesis of the literature on the theoretical basis of higher-order thinking skills in mathematics learning. This study reviews and analyses all resources, including articles published in academic journals and books. Based on a content analysis of selected resources, this article formulates a definition of higher-order thinking skills and proposes ten substantial characteristics of problems for developing students’ higher-order thinking skills in mathematics learning. The present study makes several significant improvements to the field of mathematics education by providing a framework for test construction and an agenda for future research.