# Rully Charitas Indra PrahmanaAhmad Dahlan University | UAD · Master Program on Mathematics Education

Rully Charitas Indra Prahmana

## About

169

Publications

236,016

Reads

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2,109

Citations

Citations since 2017

Introduction

Rully Charitas Indra Prahmana is a Professor in Mathematics Education Department at Universitas Ahmad Dahlan (UAD). His research interests lie in the Etnomathematics, Design Research, and Realistic Mathematics Education. [UAD Experts page: http://rully.mpmat.uad.ac.id/]

Additional affiliations

March 2012 - November 2016

**STKIP Surya**

Position

- Senior Lecturer

Description

- Lecturer and Researcher in Mathematics Education

August 2009 - April 2010

**Universitas Muhammadiyah Makassar**

Position

- Lecturer

May 2008 - December 2008

**LabMath-Indonesia**

Position

- Junior Researcher (Internship)

Education

July 2013 - August 2016

**Universitas Pendidikan Indonesia**

Field of study

- Mathematics Education

May 2010 - January 2012

July 2004 - August 2008

## Publications

Publications (169)

Financial literacy is a knowledge and attitude about finance and is a 21st-century skill. As a knowledge, a cognitive factor of a person will impact their financial literacy skill. Through a bibliometric analysis study of 274 documents published from 1994 to 2022 in the Scopus database, we found that mathematics literacy is the cognitive factor of...

Representation in mathematics is essential as a basis for students to be able to understand and apply mathematical ideas. This study aims to describe how students produce different representations in solving word problems. In solving word problems, students make verbal-written representations, image representations, and symbol representations. This...

The Likert scale is one of the essential rating scales used as a measurement tool in social sciences research, especially in the qualitative approach. Unfortunately, this scale has a great deal of controversy surrounding how data is obtained from Likert questionnaires and the appropriate statistical analysis of these data. A systematic review was p...

In implementing Ethnomathematics-Realistic Mathematics Education (Ethno-RME), teaching mathematics correctly is needed through learning practices in teaching and learning activities. This pedagogical activity requires guidance in the form of a curriculum. So, the teacher can determine the ethnomathematics context as a starting point in teaching mat...

Freudhental's idea of Realistic Mathematics Education (RME) and D'Ambrosio's idea of Ethnomathematics must share some common principles. Both aim to create mathematics learning that eases students to understand concepts by discovering them and makes them understand the use of mathematics in response to their surrounding reality. I have implemented...

Learning the content of entrepreneurship arithmetic is an extension of social arithmetic that focuses on mathematical calculations in business or creative economy. Most teachers do not link students’ daily activities to classroom teaching and learning on traditional markets around the environment. This significantly affects the interest in learning...

The educational revolution has posed an immense challenge to the world of education. It demands the development of a generation that can take on the challenges and changes bred by the ever-rapid revolution. It is thus inevitable that education must enable improvements of individual hard skills and soft skills that are required to keep up with such...

Mathematics cannot be separated from human life. However, mathematics is often taught directly through formulas and abstract mathematical forms at school and is less associated with students' daily lives. Hence, it makes it difficult for students to understand mathematics and often find it difficult to understand how mathematics can be useful in de...

The rapid development of knowledge and technology in the 21st century brings significant challenges to the education field. Learning media used in learning follow technological developments and must help students understand the concepts being studied using contexts that are close to students. Especially in mathematics education, the approach that c...

The COVID-19 pandemic has made researchers from various fields make fundamental contributions according to their expertise. One of which is in the education field. The field has created research results and published them in reputable journals to increase the readability for the community. The published researches provide an overview of the challen...

How dyslexia students solve number operations is still challenging to unravel. This study aimed at revealing the types of errors conveyed by a dyslexic student in performing fractional operations on mathematical tasks that combined non-verbal text (symbols and pictures) and verbal text. The data were collected using a task-based interview with a 13...

The idea of ethnomathematics initiated by Urbiratan D'Ambrosio in 1977, has now used in Indonesia in the form of various studies on ethnomathematics in various cultures in Indonesia. However, since ethnomathematics implemented in Indonesia since 2013 until now, there has been no comprehensive study of how ethnomathematics study trends in Indonesia,...

A tambourine is one of the musical instruments commonly used in Islam. It is also used in an extracurricular activity in various schools so that many students are familiar with the instrument, making it relevant for learning mathematics. Furthermore, there is an approach to learning mathematics called Indonesian Realistic Mathematics Education (IRM...

This book is divided into two major sections: mathematical terms in English and mathematical symbols. This book provides alphabetical data regarding mathematical terms defined and translated into Indonesian in the first part. Furthermore, this book describes some symbols often used in learning mathematics in the second part. Furthermore, this book...

p> Abstract. Writing and publishing scientific articles are essential for researchers, lecturers, and students in Indonesia. However, many of them still have difficulty writing their research results in the form of scientific articles and publishing them in reputable international journals. So, this service activity is carried out to develop academ...

Teaching and learning activities are carried out online during the pandemic situation. This condition makes the teaching and learning process in the classroom requires teaching materials that can support the learning process. However, some teachers still use teaching materials commonly used during face-to-face learning, which is irrelevant for offl...

Space and shape is one of the geometry topics that should be mastered by students and require proper teachers’ Mathematics Content Knowledge (MCK) for teaching to avoid misconception. This study aimed at developing a constructive conceptual framework as an instrument to examine mathematics pre-service teachers’ MCK on space and shape contents and d...

Low-ability students are evidenced to have difficulties in understanding the concept of abstraction in mathematics , such as social arithmetic problems. It is because low-ability students have an IQ below the average of 70 to 90. Most teachers find it challenging to discover what kind of learning approaches that may be suitable for improving their...

Literasi matematika merupakan salah satu keterampilan yang penting untuk dimaksimalkan di abad ke-21. Namun, kemampuan ini masih belum banyak mendapat dukungan untuk dimaksimalkan, salah satunya dengan memberikan sejumlah soal yang dapat melatih kemampuan tersebut selama kegiatan belajar-mengajar. Oleh karena itu, penelitian ini bertujuan untuk men...

The environment is a global issue that must be addressed in a variety of ways, including education. Environmental topics will be included into mathematics, which is allowed to boost students' awareness of environmental concerns. This is a qualitative study conducted in a qualitative technique. The objectives of this study were to (1) describe stude...

Geometry is one of the essential mathematics materials, such as square and rectangle. However, most elementary school students experience difficulty in understanding it due to the abstractness of the geometric material. Furthermore, teachers teaching in the remote areas of Indonesia still encounter problems exploring this abstract material to make...

HOTS instruction in mathematics is rarely explicitly programmed by the schoolteacher. As a result, students' HOTS is at the lowest level, especially in national or international assessments. The purpose of this research is to determine why mathematics education in Indonesia does not have a significant effect on student HOTS by conducting a review o...

Freudenthal’s ideas on mathematics, namely Realistic Mathematics Education (RME), which suggested that mathematics is a human activity that must be connected to reality, have influenced how people learn mathematics worldwide, especially in Indonesia. RME is a mathematical instruction theory developed in the Netherlands (Van den Heuvel-Panhuizen & D...

Some countries have puppet culture in various forms, terms, and ways, including Indonesia. As a country with a diverse culture, it has detailed and comprehensive characteristics and stories related to puppets, especially the Javanese shadow puppet. Some experts have explored its characteristics and found out that it contains many mathematical eleme...

Cultural diversity around students can be integrated into learning mathematics in the classroom. Yet, Indonesian students still have difficulty applying mathematical concepts to solve problems related to everyday life, such as dilation and reflection in transformation geometry. Therefore, this study aims to design the dilation and reflection in tra...

Freudenthal's ideas on mathematics that stated mathematics as a human activity and mathematics must be connected to reality have colored towards learning mathematics worldwide, including Indonesia. Realistic Mathematics Education (RME) is a specific mathematics instruction theory from the Netherlands (Van den HeuvelPanhuizen & Drijvers, 2020). The...

Sejumlah penelitian terkait implementasi pembelajaran matematika pada anak berkebutuhan khusus (ABK) telah banyak dilakukan di Indonesia dan terpublikasi dalam jurnal-jurnal nasional terakreditasi. Namun, belum ada survei artikel mengenai penelitian-penelitian implementasi pembelajaran matematika pada ABK di Indonesia. Sehingga, tujuan dari penelit...

The long-term objective of this research is to produce valid, practical, and effective textbooks for courses in international program of mathematics education of Universitas Ahmad Dahlan. For the short-term, this research aims to produce valid and practical textbook for number theory course. The validity was based on the relevancy towards the stude...

Over the past decade, several researchers have documented the results of their research on the connection between mathematics anxiety and poor mathematical abilities of students. Therefore, the study of mathematical anxiety and its causal factors becomes an important research area. This study aims to determine the level of mathematics anxiety and t...

Indonesia has many cultures that can be used as a starting point in learning mathematics. Yet, many teachers still use conventional methods to provide explicit mathematical content without connecting with students' culture and daily activities. One of the learning approaches that can solve these problems is Realistic Mathematics Education (RME). Th...

One of indicators to determine the quality of a journal can be observed from how many indexing institutions recognized it nationally and globally, such as Sinta, Scopus, and ScimagoJR. Furthermore, the rank of a journal in the indexing institution will add more value to the reputation of a journal. However, few journal editors are willing to share...

Several Programme for International Student Assessment (PISA) research articles published in Indonesia have contributed to PISA research development in Indonesia, with mathematics as one of the PISA domains. However, there is no research to categorize the PISA research article to give future PISA researchers essential information. Therefore, this s...

The COVID-19 pandemic is a big challenge for education worldwide because education has to be done virtually to stop the spread of the COVID-19. The problem is that there are students who live in areas far from cities, while learning in an interconnected world should be done virtually. Diverse geographical conditions in Indonesia consisting of mount...

Students who have slow mathematical cognitive abilities or slow learners usually have difficulties understanding an abstract mathematical concept. One alternative learning that can improve the mathematical understanding of slow learners is the Indonesian Realistic Mathematics Education (IRME) approach. Therefore, this research aimed to determine th...

Buku ini dibagi ke dalam 3 bagian besar, mulai dari niat baik dalam riset dan membangun publikasi yang berkualitas, menuangkan hasil riset dalam bentuk artikel ilmiah, dan proses mempublikasikan artikel ilmiah di jurnal yang baik. Pada bagian pertama, penulis menceritakan tentang bagaimana menjadi atau membuat niat dan motivasi yang baik dalam mera...

Slow Learner students often have difficulty understanding mathematics content, one of which is direct and inverse proportion. This study aims to improve the student's understanding of the direct and inverse proportion material using the Contextual Teaching and Learning (CTL) approach. The research subject in this study was a single subject, namely...

Instructional materials are one of the essential parts to support the learning process becomes more exciting and meaningful. However, teachers do not yet give more attention to these parts, so that the learning process becomes uninteresting and boring. Therefore, this research aims to produce the instructional materials for the logical thinking of...

The pandemic era had an enormous influence on teaching and learning activities in all regions of the world. For urban areas that generally already have a variety of adequate facilities and infrastructure, it still has an impact on their learning activities. However, this outbreak in rural areas with limitations in teaching and learning activities h...

Measuring teachers' skills and competencies is necessary to ensure teacher quality and contribute to education quality. Research has shown teachers competencies and skills influence students’ performances. Previous studies explored teachers’ knowledge through testing. Teachers' knowledge of the topic of area-perimeter and teaching strategies has be...

Buku ini merupakan salah satu buku referensi yang mengkaji tentang apa dan mengapa seorang peneliti menggunakan metode penelitian Single Subject Research (SSR) dalam penelitiannya, untuk menjawab permasalahan pembelajaran pada siswa yang spesial. Buku ini diinspirasi dari buku karya Juang Sunanto (Universitas Pendidikan Indonesia), Koji Takeuchi (U...

Learning mathematics has a significant contribution to the students’ daily activities, one of which is on social arithmetic topic. The implementation of social arithmetic, in general, is mostly found in buying-selling and banking activities. However, students still find difficulties in understanding this topic. It is because the teaching and learni...

Mathematics exists as rooted in human ideas, ways, and techniques to respond to their environments. Along with its development, mathematics has been taught through formal education or schooling in the flat- not flexible ways and far from students' social and cultural lives. Indonesia is rich with culture, including the Special Region of Yogyakarta...

Materi geometri merupakan materi yang penting untuk dipelajari karena berkaitan dengan kehidupan sehari-hari dan sebagai materi dasar pendukung penguasaan materi matematika yang lain. Namun, materi geometri, khususnya materi hubungan antar sudut, masih dianggap sulit dipahami oleh siswa. Oleh karena itu, dibutuhkan suatu model pembelajaran yang int...

Assessment is a crucial aspect of education. A critical point in the evaluation is the validity of the instruments used in conducting the assessment. However, some studies do not pay more attention to this section, which results in the invalid results of the resulting research. This study aimed to map the indicators of the Higher-Order Thinking Ski...

Introduction to number theory. A handbook for undergraduate students

List of Organizing committee, Steering committee, Editorial Board and Scientific Commitee are available in this pdf.

The aim of this study is to describe the formal thinking process of students in solving algebraic problems. This study is descriptive qualitative, with two 7th grade subjects taken using a purposive sampling technique. The main instrument in this study is the researchers own judgment, Test of Logical Operations instruments, and algebraic problem-so...

The purpose of this study is to develop learning designs that incorporate environmental contexts into mathematics learning. The method used is a qualitative method using a literature review approach. The selection of research objects and literature is achieved through purposeful sampling techniques and by employing data search engines. Mathematics...

List of Organizing Committee, Steering Committee, Advisory Editorial Board, Scientific and Reviewer Committee are available in the pdf.

Preface
Indonesian education system demands changes due to the dynamic challenges in human resources as the effect of the Industrial Revolution 4.0. As a result, the curriculum set into contemporary literacies: Data Literacy comprises the ability to read and analyze, Technology Literacy includes the ability to apply technology, and Human Literacy a...

Freudenthal's ideas on mathematics that stated mathematics as a human activity and mathematics must be connected to reality have colored towards learning mathematics all over the world, including Indonesia. Existing research on this topic in Indonesia among two decades is categorized and compared. This paper presents a systematic literature review...

Fractions are universally known to be difficult to learn. Learning basic fractions may not be sustainable if one is to apply it to more advanced mathematical content knowledge as it is interlinked with other mathematics topics. In the effort to understand how children grasp the learning of fractions additions, a study was carried out with a random...

In general, many people still view mathematics as a subject that is far from reality and culture in everyday life. Historically, in fact, mathematics is very close to daily life and was developed by humans in response to the surrounding phenomena. Indonesia has diverse cultures, including in Yogyakarta. This culture can be used to explore mathemati...

Pengalaman penulis dalam melakukan aktivitas publikasi ilmiah di Jurnal Nasional maupun International bereputasi selama kurun waktu 10 tahun terakhir, memberikan nilai lebih dalam penulisan buku ini. Selain itu, penulis juga telah melakukan puluhan workshop terkait penulisan dan publikasi karya ilmiah, baik di level nasional maupun internasional, s...

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...

Yogyakarta has a nickname as the City of Culture. Yogyakarta has several cultures that are closely related to the context of learning mathematics. However, not many educators in Yogyakarta see this culture as a context that can be a starting point in learning mathematics. Thus, this study aims to explore the culture of Yogyakarta's people that can...

An essential part of learning transformation geometry is rotation. Before learning more about other parts of the transformation geometry topic, such as translation, dilation, and reflection, firstly, students are required to understand well about rotation. However, several students have not been able to understand this subject properly due to the s...

Indonesia has many cultures, one of which is in the form of traditional crafts namely Anyaman Bambu. It’s a form of traditional craft in the community that uses bamboo as its basic material. However, people only see these crafts as only a form of traditional craft, even though there are many motifs in these crafts that can be used as a starting poi...

Ferris wheel is one amusement playground that resembles a giant spinning wheel. Many students are familiar with the Ferris wheel in the mini version of it at night market festivals. This is the potential for learning mathematics. Furthermore, there is a mathematical learning approach called Indonesian Realistic Mathematics Education (IRME) where st...

Penelitian ini bertujuan untuk menghasilkan Lembar Kegiatan Siswa (LKS) menggunakan pendekatan Pendidikan Matematika Realistik pada materi kubus dan balok yang valid, praktis, dan memiliki efek potensial terhadap kemampuan literasi matematis siswa. Metode penelitian yang digunakan dalam penelitian ini adalah design research tipe development studies...

This study aims to determine the role of Guided Inquiry in understanding students' concepts in learning the Pythagorean theorem, through student worksheet-based guided inquiry learning models. This study uses descriptive qualitative research methods, which were carried out in class VIII D at SMP Muhammadiyah 1 Gamping. Data collection techniques us...

One of the geometry subjects that has a high level of difficulty and abstractness is the 3D-shape subject (solid geometry), especially the surface area of a polyhedron. Students have difficulty in imagining objects and constructing previously owned knowledge. One approach that uses prior knowledge as a starting point for learning is the Indonesian...

Buku ini merupakan buku pertama berbahasa Indonesia yang mengkaji tentang apa dan mengapa seorang peneliti menggunakan pendekatan Ethnomathematics dalam kegiatan belajar-mengajar matematika. Buku ini diinspirasi dari tulisannya D’Ambrosio yang merupakan orang pertama yang memperkenalkan istilah Ethnomathematics. Sejumlah literature terkait pendekat...

In recent years, several researchers have tried to use stories and games as a starting point for learning mathematics. This is allegedly able to increase students' mathematical abilities and make learning mathematics more enjoyable. Therefore, this research is aimed to design a mathematics learning trajectory in pattern number using Barathayudha Wa...

The purpose of this research is to understanding the role of line and angle learning design in students’ comprehension of mathematical concept and also to understanding the students’ learning result through LAS (Lembar Aktivitas Mahasiswa) or student activity paper that is based on the Indonesian Realistic Mathematics Education approach. The resear...

Indonesia has many traditional games that can be used as a starting point in learning mathematics, i.e., social arithmetic. However, the teacher always used a conventional method such as direct teaching in teaching mathematics. Several researchers said that this method made mathematics learning boring. Therefore, this study aims to design a mathema...

Mathematical anxiety has a negative relationship with mathematics performance and achievement. Further explained, mathematics anxiety has an indirect effect on mathematics performance. This research explores sources or factors related to mathematics anxiety among engineering students at a private university in Indonesia. A total of 47 engineering s...

Pemahaman konsep sangat diperlukan dalam pembelajaran matematika, sehingga diperlukan suatu konteks untuk mempermudah siswa dalam memahami konsep matematis. Penggunaan konteks merupakan salah satu karakteristik dalam pembelajaran matematika dengan Pendekatan Matematika Realistik Indonesia (PMRI). Tujuan penelitian ini adalah untuk mengetahui peran...

span>Social networking web sites is not a new medium for users. The growth of this media helps students communicate and socialize with their friends or followers and used for education. The retention number of students is an issue or real problem in higher educational institutions since it is related to institution overall performance. This researc...

The rural area's student difficulties in learning the concept of number operation had been documented by several studies, especially for the case of multiplication. The teacher typically introduces the multiplication concepts using the formula without involving the concept itself. Furthermore, this study aims to design learning trajectory on multip...

This study aims to support students' understanding of learning comparative material and determine student learning outcomes incomparable learning through LAS-based guided inquiry learning models. This study uses a research design research method, which was carried out in class VII B SMP N 1 Berbah Sleman. The research instruments used were recordin...

The deaf-mute students have limited communication and knowledge, which result in their limitations in learning mathematics. This study aims to determine the development of the deaf-mute student in learning mathematics, especially about a fraction. The method used is the Single Subject Research (SSR) by implementing the Indonesia Realistic Mathemati...

Bamboo handicraft is one of the cultural heritage that is still preserved by the Muntuk community. In making bamboo handicrafts, many use interesting and varied motifs of Anyaman (handicraft). The purpose of this research is to explore the relationship between mathematics and culture, especially in the motif of Anyaman Bambu (bamboo's handicraft)....

One of the research objectives was formulated to improve the quality of education, namely by understanding the problems of students and teachers. There were three main groups of quality characteristics of education highlighted in scientific and academic literature in Russia, namely the quality of educational objectives, the quality of the education...

The purpose of this research is to find out the students' thinking process in formal cognitive development in solving mathematical problems. The problem solving used in this study uses patterns from the pattern that have been adapting to the habits of students in Indonesia, namely the first stage is known, the second stage is asking, and the third...

This study aims to determine the ability of seventh-grade disabilities students (mental retardation) in solving number operation problems including addition, subtraction, multiplication, and division of natural numbers at SLB Bhakti Kencana I Berbah. The research method used is descriptive research to see the abilities and activities of students in...

Fraction is one of the subject that begins to be studied in primary school and often found in daily life. Therefore, students, especially in seventh-grade are familiar with the subject. The purpose of this study is to explore information and describe students' error in solving fraction problem. The research method used is descriptive research. The...

The general aim of mathematics is stated as making an individual acquire the mathematical knowledge needed in the daily basis, teaching how to solve problems, making him/her have a method of solving problems and acquiring reasoning methods. For this purpose to acquire mathematical concepts one should be able to visualize the mathematics problems. I...

Math attitude has been considered as the essential variable determining students' math achievement. It has been perceived that mothers and children math attitude play a significant part in children math achievement. Therefore, the purpose of this study was specifically to describe the role of the mother in assisting their children's math achievemen...

This research is an exploratory study to show the correlation between mathematics and culture. These studies have the purpose of exploring culture at cultural festival activities that contain mathematical concepts. This study uses ethnographic methods. Data collection techniques use principles in ethnography such as observation, interviews, documen...

Aljabar merupakan subjek yang sangat penting dalam pembelajaran matematika. Oleh karena itu, siswa khususnya pada tingkat SMP kelas VII harus dapat memahami konsep ini dengan baik. Penelitian ini bertujuan untuk mendeskripsikan miskonsepsi siswa kelas VII dalam menyelesaikan permasalahan yang berkaitan dengan operasi bentuk aljabar. Metode peneliti...