bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Preface of the Second Ahmad Dahlan International Conference on Mathematics and Mathematics Education (ADINTERCOMME) 2019
Authors: Prasetyo P W , Purwadi J , Khasanah U , Fahmi S , Prahmana R C I , Istiandaru A , Setyawan F , Hendroanto A , Astuti D , Priwantoro S W , Istihapsari V , Yuwaningsih D A , Irsalinda N , Nurnugroho B A , Rafsanjani-Hsm Z A , Ariadi Y 
Published: September 2020

Preface

The Ahmad Dahlan International Conference on Mathematics and Mathematics Education, abbreviated as AD INTERCOMME, is a biennial international conference hosted in a cooperation by the Mathematics Department - Faculty of Science and Applied Technology - and the Mathematics Education Department - Faculty of Teacher Training and Education - of Universitas Ahmad Dahlan, Yogyakarta, Indonesia. It aims to provide a great forum for worldwide mathematicians, professors, teachers, and researchers to share their ideas about the trends and the emerging issues both in mathematics and mathematics education. In 2019, the AD INTERCOMME would be implemented for its second edition. We invite researchers and practitioners to come and to contribute in this conference. We would be very happy to welcome you in Yogyakarta.
The keynote presentations are provided especially to show the contribution of Mathematician and Mathematics Educators in the world of mathematics and mathematics education towards research and knowledge sharing where our conference theme for this year is the contribution of Mathematics and Mathematics Education in Industrial Revolution Era 4.0. The main event is the talk of three keynote speakers. The first keynote speaker is Associate Professor Dr. Mazlini Adnan form Universiti Pendidikan Sultan Idris, Malaysia. The second keynote speaker is Associate Professor Martianus Frederick Ezerman, Ph.D from Nanyang Technological University, Singapore. The third keynote speaker is Associate Professor Dr. Sitti Maesuri Patahuddin from University of Canbera, Australia.
We also have speakers in workshop session coming from Universitas Ahmad Dahlan, Dr. Rully Charitas Indra Prahmana, S.Si., M.Pd who deliver the talk on the Publishing Manuscripts in a Scopusindexed Journal and M. Rizky Alif Yuza who deliver the talk on the Workshop Big Data: “Sentiment Analysis Using Pyhton, Elastic Search and Kibana. ADINTERCOMME 2019 was an overwhelming success, attracting the delegates, speakers and sponsors from many countries and provided great intellectual and social interaction for the participants. Without their support, the conference would not have been successfully organized. We trust that all the participants found their involvement in the Conference both valuable and rewarding. Our wish is that all participants would enjoy this conference, contribute effectively toward it and take back with you knowledge, experiences, contacts and happy memories of this conference and especially with this beautiful kingdom of Yogyakarta.
Dr. Puguh Wahyu Prasetyo, S.Si., M.Sc
Editor in Chief
Brain based learning to improve students’ higher order thinking skills
Authors: Lusiana R , Andari T 
Published: September 2020

AbstractHigher-order thinking skills are an important component in the process of solving higher education problems that involve the mastery and understanding of scientific concepts. In an effort to hone students’ thinking abilities, innovative efforts in learning are needed. The purpose of this study was to determine the increase in higher order thinking skills of students using brain-based learning. The research method used was quasi experimental with one group pre-test post-test design. Subjects used in this study were 54 students taken by purposive sampling. The instrument used in this study is a learning achievement test to measure higher order students’ skills. The data analysis technique used is one sample t-test and N-Gain. The results showed the mean value of the pre-test was 57.65, the average value of the post-test was 70.41, and the average value of the N-Gain was 0.32. This shows that there is an increase in students’ higher-order thinking skills by using brain-based learning in logic and set courses.
Mathematical reasoning through the application of solid geometry
Authors: Widiatmoko H , Mardiyana  , Triyanto  
Published: September 2020

Abstract
This study aims to find out how the process and results of students’ reasoning abilities are faced with the problems of applying solid geometry. This research was conducted on 10 students of class VIII SMP in the even semester of the 2018/2019 school year. Data collection techniques using purposive sampling. Data triangulation process is carried out to confirm the results of the test and interview. The results of this study indicate that students’ mathematical reasoning abilities measured by reasoning indicators have different results. Indicator of the ability to present mathematical statements verbally, in writing, drawings, diagrams, get good results because students have been able to write the information requested and find solutions to problems. Indicator of the ability to do mathematical manipulation to get enough results, because students in the process of working on mathematical manipulation are incomplete and inaccurate. Indicators compile evidence and give reasons to get bad results because students cannot give reasons precisely because the preparation of evidence is incomplete. The indicator draws conclusions from a statement getting bad results because students cannot deduce the questions given correctly due to a lack of understanding. Based on the results it was concluded that the student’s reasoning ability was still lacking at the stage of giving reasons for the evidence compiled and inferring from a statement.
Fuzzy c-shells clustering algorithm
Authors: Pratiwi N B I , Saputro D R S 
Published: September 2020

Abstract
Clustering is a process to classify data into some clusters or classes so then data in same cluster have maximum similarity and data between clusters have minimum similarity. Generally, clustering is separated into two methods, hierarchical and non-hierarchical methods. Non-hierarchical methods are separated as soft clustering and hard clustering. Non-Hierarchical methods that mostly used is K-Means algorithm. K-Means grouping object into certain member and not included in different clusters. Another approaches in clustering technique which is based on fuzzy sets theory is known as fuzzy clustering. Fuzzy clustering is one kind of soft clustering that also widely used because of many advantages than the hard clustering. Several varieties of fuzzy clustering are Fuzzy C-Means (FCM) and Fuzzy C-Shells (FCS). FCM is characterized by centre of cluster and FCS uses radius as additional parameter. This paper concerns FCS clustering algorithm using review of several references. Hence, FCS is characterized by centre of cluster and radius.
Reflective pedagogical paradigm approach in mathematics learning
Authors: Saputro T V D , Mahmudi A 
Published: September 2020

AbstractThis study aimed to describe the trends of the reflective pedagogical paradigm approach in mathematics learning in Indonesia that could give a better recommendation of mathematics learning in the future. This study literature was taken through some of the open-access websites such as ERIC, Google Scholar, JSTOR, and Springer for 6 years latest. The researcher took the limitation in exploring the literature review by determining the sources’ keys such as Reflective Pedagogical Paradigm in Mathematics, Reflective Pedagogy, and Ignition Pedagogy. The study results of the trends of the reflective pedagogical paradigm approach in mathematics learning were research methodologies trends, the students’ learning impacts, and the relationship between Indonesian curriculum and the reflective pedagogical paradigm application in 21stcentury learning.
Mathematical probability: student’s misconception in higher education
Authors: Astuti D , Anggraeni L , Setyawan F 
Published: September 2020

Abstract
Probability is one of the mathematical concepts that are abstract for students. Probability concepts used in daily life. As a basis of statistics, students used the probability concept. This topic is one of the compulsory subjects learned in the Mathematics Education Study Program of Universitas Ahmad Dahlan. However, there are still many students who have difficulties in understanding the concept of probability. This study aims to describe students’ misconceptions in solving Probability problems. The research used descriptive method. The subjects in this study were the fourth-semester students of Mathematics Education Study Program Class C of Universitas Ahmad Dahlan. The results of this study found that there are four misconceptions made by students in solving Probability problems. First, students’ error in interpreting questions. Second, students’ errors in the procedure of proving the theorems of probabilities. Third, students’ misconceptions in the application of Bayes’ rules while they are solving problems. Fourth, students’ error in calculating the possibility of an event.
Solving Shortest Path Problems Using Mathematical Literacy Skill Figured Out By Pre-Service Teachers
Authors: Apriandi D , Murtafiah W , Ayuningtyas A D , Rudyanto H E 
Published: September 2020

Abstract
Mathematical literacy is an important ability to be taught to the mathematics pre-service teacher. The students who have good mathematical literacy skills will be sensitive to the mathematical concepts which are relevant to the phenomenon or problem. One of the problems that is given to mathematics pre-service teacher is the shortest path problem in Graph Theory courses. The purpose of this study is to explore the mathematical literacy abilities of the pre-service teacher in solving the shortest path problems. The research subjects were 56 mathematics pre-service teacher of Universitas PGRI Madiun, Indonesia. The data were collected through problem-solving tests which were then analyzed based on indicators of mathematical literacy ability namely formulate, employ, and interpret. The results shows that the mathematical literacy abilities of pre-service teacher in solving the shortest path problem consist of three categories, namely complete, incomplete, and incomplete mathematical literacy abilities. There are 9 students with complete mathematical literacy skills can formulate, employ, and interpret. There are 18 students with incomplete mathematical literacy skills can formulate and employ. There are 29 students with incomplete mathematical literacy can only formulate.
Contextual problem in mathematical problem solving: core ability in Realistic Mathematics Education
Authors: Pratiwi S A , Widjajanti D B 
Published: September 2020

Abstract
Problem solving is one of the ability existed in the component of Realistic Mathematics Education. This ability becomes more important for a student to understand, analyse and formulate the daily-life problem into formal mathematics, such as real-life problem, problem-based specific context, and the problem itself. Even though problem solving is an important component that must be mastered by the student in learning mathematics, not every student has a certain skill to understand and solve the problems occured in daily life. Many students do neither master the basic mathematics concepts nor know the specific criteria in problem solving ability. Regarding the fulfilment, this paper aims to investigate how to optimize problem solving ability using Realistic Mathematics Education as a part of student’s learning. The method used in this article is literature review in which the data collected through a study of several theories and the results of relevant scientific research such as mathematics learning, problem solving concept, Realistic Mathematics Education theory and the others. The result shows that the ability of problem solving and Realistic Mathematics Education interconnected each other, which is Realistic Mathematics Education has the important role in optimizing problem solving, especially in solving contextual problem. According to the result, this article contribute to improving teachers and students mathematics proficiency and deepening the learning theories especially the theories of mathematics problem solving to be more skilful and well-experienced in learning mathematics.
Collaborative classroom action research for mathematics and science teachers in Indonesia
Authors: Nurhasanah F , Sukandi U , Kuncoro A B , Rusilowati A , Hastuti W S , Prabowo A 
Published: September 2020

Abstract
Based on government regulation, as a part of career advancement for teachers in Indonesia, they need to do a Classroom Action Research (CAR) to reach the next level professional career. Unfortunately, this policy leads to problems that many teachers who find difficulties in doing classroom action research prefer using sort cut by asking agency to help them provide a well written classroom action research report. This situation triggered many people to take benefit by providing service for creating fake classroom action research for teacher as part of requirement in achieving next level in their career. There are some obstacles for teachers in doing classroom action research: (1) lack of knowledge theory in classroom action research; (2) lack of skill in designing instruments for data collection process; (3) lack of skill in analyzing the data; (4) lack of skill in writing the research report; (5) complicated regulation for teachers in conducting dissemination of their research. A model of TPD need to be formulated to overcome those obstacles and help mathematics and science teachers doing CAR for solving problems in their classroom or improving learning process and learning outcomes. A design research with engineering research approach is adopted as methodology of the study for designing a TPD model. The participants of the study are mathematics science teachers, lecturers, and supervisors from 5 provinces in Indonesia: North Sumatera, Riau, Jambi, Central Java, and East Borneo. This paper aims to describe the process and the result of the teachers’ professional development program for elementary and junior high school science and mathematics teachers in Indonesia through collaboration classroom action research with lecturer and school supervisors as the answer of those obstacles.
Mathematical resilience and mathematical problem-solving ability in Junior High School
Authors: Attami D , Budiyono  , Indriati D 
Published: September 2020

Abstract
In the process of mathematics learning, every student has different characteristics and attitudes to face adversity that called mathematical resilience. Mathematical resilience is one of the factors that have a role in supporting student achievement. This study investigated the relationship between mathematical resilience with mathematics problem-solving ability among junior high school students. Participants included 100 students at Sragen Region, Central Java Province, Indonesia. The method was used in this research is the survey method with the correlation and regression technique. Data sources included the questionnaire of mathematical resilience and written test. Findings revealed a significant, positive correlation between mathematical resilience and student’s mathematical problem-solving ability, with a contribution of 16.30% obtained by the regression model
Y
= 14.355 + 0.302
X
.The result indicated that positiveness response to learning mathematics, emotion regulation, curiosity and optimism in mathematical resilience beliefs were associated with mathematical problem-solving ability. Evidence presented to support and contribute to the value of students’ mathematical problem-solving abilities and provides a new approach for encouraging greater student participation and persistence in mathematics.
Flipped classroom research trends in mathematics learning in Indonesia
Authors: Apriska E , Sugiman  
Published: September 2020

Abstract
This study aims to analyse the trends and contents of flipped classroom research in mathematics learning in Indonesia based on articles that reported on national and international journals and proceedings since 2015-2019. The content analysis was used as a methodology. Twenty articles were analysed in term of methodologies, technology or instructional media, students attitude, and challenges encountered. The research was conducted by using the internet exploration by the keywords related to flipped classroom in mathematics learning. The result of the analysis were interpreted using descriptive analysis and percentages. This analysis found that various methodologies were practiced in flipped classroom research in Indonesia, but limited technology or instructional media were used for its practice. The use of flipped classroom in mathematics learning yielded a positive impact on students’ achievement when compared to the traditional classroom. Mixed results of student attitude toward flipped classroom in mathematics learning were discovered. Challenges of implementing flipped classroom were identified categorized into student-related challenges, teacher-related challenges, and operational challenges. Finally, some recommendations for future research are provided.
How do students promote mathematical argumentation through guide-redirecting warrant construction?
Authors: Muhtadi D , Sukirwan  , Hermanto R , Warsito  , Sunendar A 
Published: September 2020

Abstract
Argumentation is a mathematical discourse that is currently widely studied by researchers as a stepping stone in constructing mathematical evidence. A variety of argumentation studies display different formats and constructs ranging from Toulmin’s argumentation with a formal logic system to a general discourse that presents justifications and explanations for informal arguments with an inductive approach. It is based on the student’s difficulties in preparing a search warrant until later gave rise to the idea of reconstruction of the warrant and the importance of guide-redirecting warrant construction (GWC). The results showed that GWC could guide students in constructing statements and reasons or explanations towards the expected evidence. Students also realize that statements are related to reason and explanation in building whole arguments. Even so, the presentation of the statement is still aligned with the evidence submitted, so for reasons that display the axiomatic system, it still faces problems.
Reflective mathematical thinking process and student errors: an analysis in learning style
Authors: Ratnaningsih N , Hidayat E 
Published: September 2020

Abstract
Mathematical reflective thinking is one of the important thinking skills trained to students, but it has less attention. Student learning style is one of the factors that influence the mathematical reflective thinking process. The purpose of this study is to explore errors and reflective mathematical thinking processes seen from learning styles according to Honey and Mumford. This research was conducted at one of the junior high schools in Indonesia. This study uses a survey method, students with activist, reflector, theorist, and pragmatist learning styles. Data were collected through learning style questionnaires, mathematical reflective tests, and observations. All research instruments will first be tested for eligibility by validation by 2 experts. Data analysis techniques include data reduction, data presentation, and conclusion. The results of the analysis can be concluded that the mathematical reflective thinking processes of students with activist, pragmatist, and theorist learning styles had gone through the stages of reacting, elaboration, and contemplating appropriately. While students with reflector learning styles are only at the stages of reacting, and elaboration, they have not reached contemplating. This study provides teachers with an understanding of the importance of errors and thought processes of students in reflective thinking problems.
p-Summable Vector-Valued Sequence Spaces in Non-Archimedean 2-Normed Spaces
Authors: Nurnugroho B A , Prasetyo P W 
Published: September 2020

Abstract
Let (X, ‖., .‖) be a non-Archimedean 2-normed spaces. In this paper, we construct p-summable vector-valued sequence spaces in non-Archimedean 2-normed spaces ℓ

p
(X) for 1 ≤ p ≤ ∞. Futhermore, we show that ℓ

p
(X) is a non-Archimedean 2-semi-normed spaces and we also give some inclusion relations on ℓ

p
(X).
The Role of Progressive Mathematics in Geometry Learning
Authors: Warsito  , Muhtadi D , Sukirwan  , Saleh H 
Published: September 2020

AbstractThe purpose of this study is to analyze the learning trajectory that can help students understand the concept of volume cubes and beams with filling and arrangement boxes using dice context in grade VIII of junior high school (SMP). This research is a design research type of validation study that is implemented through Realistic Mathematics Education (RME). Design research is carried out in three stages, namely: preliminary design, teaching experiment consisting of cycle one and cycle 2, and retrospective analysis. The study was conducted in grade VIII of SMP at Tangerang City. The results of the study show that students can understand the volume of cubes and beams through progressive mathematical identified at the situational stage, recognizing the volume unit with the arrangement of unit cubes; referential stage, calculates the number of unit cubes that can be made on cubes and beams; general stage, found the capacity of objects in the form of cubes or beams based on known ribs and blocks; formally stage, calculate the volume of cubes and beams if the ribs are known.
Educational statistics textbooks to develop collaborative skills and critical thinking
Authors: Astuti D , Prabowo A , Hidayati N A , Khasanah U 
Published: September 2020

Abstract
Educational statistics textbook based cooperative learning is expected to facilitate teachers in delivering educational statistics lessons. This study aims to identify the characterization of the textbook based on the students characteristics. The research method used was research and development of the 4D (define, design, develop, and disseminate) model. This research was on define step. The first step of this study was analyzing the students and materials characterization. The next step was defining the characterization of the textbook based on students and materials characterization. The textbook was developing based on the characteristics. Data collected by the interviewing the students and observing the learning process. The characteristics of the textbook are (1) interactive, (2) show the contextual problem on education (3) facilitate to developing collaborative skill and critical thinking, and (4) task from the easy to hard task.
Mathematical statistics learning model based on the Indonesian national qualification framework
Authors: Syahputra E , Surya E , Utami D R 
Published: September 2020

Abstract
Learning model plays an important role in enhancing learning outcomes. This study aims to develop a learning model based on Indonesian National Qualification Framework. The learning model was applied in Mathematical Statistics class. The learning model trial was conducted along with Mathematical Statistics textbook trial. The trial was conducted in 8 meetings and was followed by 12 students of Mathematics Education Study Program. The trial’s result shows that the learning model and Mathematical Statistics textbook have high validity. Likewise, the learning outcomes show student high ability in understanding Mathematical Statistics. The test result shows that the average score of the students is 92.