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Rully Charitas Indra Prahmana

Universitas Ahmad Dahlan, Yogyakarta, Indonesia

Author-ID : 344090

Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Trivium curriculum in Ethno-RME approach: An impactful insight from ethnomathematics and realistic mathematics education Rully Charitas Indra Prahmana; Mónica Arnal-Palacián; Irma Risdiyanti; Rahmi Ramadhani
Jurnal Elemen Vol 9 No 1 (2023): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v9i1.7262

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 mathematics using Ethno-RME. Therefore, this paper focuses on constructing an Ethno-RME curriculum to guide teachers to apply Ethno-RME in their learning process. This research was collected data from a few relevant kinds of literature to build the Ethno-RME curriculum, such as literature about the D’Ambrosio trivium curriculum, the principles, and character of RME, and literature about the implementation of RME and Ethnomathematics in school. Then, the data were reviewed, criticized, and synthesized, which was done by integrating the ideas in the literature with the new ideas to form the new concept and formula for Ethno-RME curriculum. This study comprehensively explains the goal of Ethno-RME learning, Ethno-RME competencies, and the procedure of Ethno-RME learning. Its process consists of several steps: determining, exploring, processing, and finding mathematics in the ethnomathematics context. Furthermore, this procedure continues with conducting self-development models and critical reflection as an assessment.

DEVELOPING REALISTIC MATHEMATICS EDUCATION-BASED WORKSHEETS FOR IMPROVING STUDENTS' CRITICAL THINKING SKILLS Reza Lestari; Rully Charitas Indra Prahmana; Maureen Siew Fang Chong; Masitah Shahrill
Jurnal Infinity Vol 12 No 1 (2023): VOLUME 12, NUMBER 1, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v12i1.p69-84

Applying critical thinking is an essential skill in the 21stÂ century. However, teaching materials that do not facilitate students to improve these skills impact the achievement of learning objectives. Therefore, educators need appropriate teaching materials that encourage students to enhance their thinking skills. This study aims to develop teaching materials based on Realistic Mathematics Education (RME) to improve studentsâ€™ critical thinking skills. The development model used is ADDIE consisting of Analysis, Design, Development, Implementation, and Evaluation phases. The instruments used, consist of validated student worksheets based on material experts and media experts, pretest questions, posttest questions, and the practicality of student worksheets. The results showed that the student worksheets developed were feasible regarding validity, practicality, and effectiveness. The validity of the student worksheets is indicated by the average score of two material expert validators and two media expert validators, each of which is in the good and excellent categories. The practicality of the student worksheets is denoted by the average value of student assessments included in the practical category. Then its effectiveness is shown by increasing studentsâ€™ critical thinking skills after being given intervention using the student worksheets.

Kemampuan Siswa Dalam Menyelesaikan Soal Matematika Berbasis Masalah Sagita Dyah Putranti; Rully Charitas Indra Prahmana
JNPM (Jurnal Nasional Pendidikan Matematika) Vol 2, No 1 (2018): EDISI MARET
Publisher : Universitas Swadaya Gunung Djati

Abstrak. Penelitian ini bertujuan untuk mengetahui kemampuan siswa dalam menyelesaikan soal matematika berbasis masalah dan mengetahui respon siswa terhadap soal matematika berbasis masalah yang diberikan. Penelitian ini termasuk penelitian kuantitatif diskriptif. Subyek penelitian ini adalah 6 siswa kelas VIII SMP Negeri 11 Yogyakarta yang terdiri dari 2 siswa berkemampuan matematika tinggi, sedang, dan rendah. Hasil penelitian menunjukkan bahwa seluruh subyek penelitian memiliki kemampuan dalam menyelesaikan soal matematika berbasis masalah dengan berbagai tingkatan. Selanjutnya, siswa memiliki respon positif terhadap seluruh soal yang diberikan.Â Kata Kunci. Kemampuan matematika, Soal matematika berbasis masalah, Sistem persamaan linier dua variabelÂ Abstract. The study aims to determine the ability of students in solving the mathematics problem-based and to know the studentsâ€™ response to the problem-based math problems provided. This research uses descriptive quantitative research. The researchâ€™s subjects are 6 students of class VIII SMP Negeri 11 Yogyakarta consisting of 2 students with high, medium, and low math skills. The results showed that all research subjects have the ability to solve problem-based math problems with various levels. Furthermore, students have a positive response to all given questions.Â Â Keywords. Mathematical skills, Problem-based math problems, Two-variable linear equation system

Exploring studentsâ€™ perceptions of private mathematics tutoring in three countries Masitah Shahrill; Farida Nurhasanah; Sahar Abbas Ibrahim; Rully Charitas Indra Prahmana; Daniel Asamoah; Haryani Mohammad; Ai Len Gan
Jurnal Infinity Vol 12 No 2 (2023): VOLUME 12, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v12i2.p339-358

This descriptive quantitative study explored secondary school studentsâ€™ reasons for receiving or not receiving private mathematics tutoring. It also explored the prevalent teaching methods private mathematics tutors use. A questionnaire was adapted to collect data from 1,309 Year 7 to Year 12 students (ages 11 to 17 years) in three countries: Brunei, Indonesia, and Iraq. The results highlight that students may receive private mathematics tutoring to pass national examinations and improve examination scores. Teachers also adapt to teaching approaches that enable students to achieve these teaching and learning goals. This study provides an initial understanding of the common reasons and teaching methods used in private mathetics tutoring across different contexts that prioritise high-stakes examination culture. The results provide implications for how private mathematics tutoring can be used to support effective teaching and learning compared to the high-stakes reasons it seems it promotes. The results also accentuate the need for families and other stakeholders to reconsider private mathematics tutoring as an opportunity to remediate the challenges students encounter in their normal classroom instruction to improve student learning.

Stimulating mathematical communication with SPECOMATSO technology development based on digital literacy Andriyani Andriyani; Meita Fitrianawati; Ibrahim Alhussain Khalil; Muya Barida; Rully Charitas Indra Prahmana
Jurnal Elemen Vol 9 No 2 (2023): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v9i2.15869

Mathematical communication is crucial in inclusive mathematics teaching and learning to convey mathematical symbols. However, teaching mathematical symbols to deaf students in inclusive classrooms has been a persistent challenge due to the lack of specialized sign language for mathematical expressions. Media, such as SPECOMATSO technology, can serve as a bridge to address this issue. This research focused on developing valid and practical SPECOMATSO technology to strengthen students’ literacy and facilitate the delivery of mathematical symbols, which previously posed difficulties for teachers in inclusive settings. The research combined the Alessi & Trollip and V-waterfall models, encompassing seven development stages: analysis, design, implementation, unit testing, integration testing, system testing, and acceptance testing. The research instruments included observation and interview guidelines, a product validation questionnaire, and a student response questionnaire. This study produces SPECOMATSO technology that is valid and practical for learning plane geometry and angles in mathematics. Although this development still needs improvement in fixative abilities, such as storage and editing functions, it is expected to strengthen digital literacy and stimulate mathematical communication among deaf students who face challenges related to their limited auditory capabilities.

The impactful developed PISA-type problems for students' mathematical literacy through the context of Siger tower Retnawati, Sri; Prahmana, Rully Charitas Indra; Arnal-Palacian, Monica
Pasundan Journal of Mathematics Education : Jurnal Pendidikan Matematika Vol. 14 No. 1 (2024): Pasundan Journal of Mathematics Education : Jurnal Pendidikan Matematika
Publisher : Program Magister Pendidikan Matematika, Pascasarjana, Universitas Pasundan in collaboration with Asosiasi Guru Matematika Indonesia (AGMI) and Indonesian Mathematics Educators' Society (IMES)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/pjme.v14i1.15556

Indonesia's mathematical literacy levels remain low, as evidenced by its poor performance in PISA rankings over the past decade. One contributing factor is the students' unfamiliarity with PISA-type problems, which emphasize content, context, and process skills. The Siger Tower, an iconic landmark in Lampung, offers a multifaceted context encompassing tourism, arts, culture, religion, and education. This study aims to develop valid, practical, and potentially impactful PISA-type mathematics problems using the Siger Tower as context to enhance mathematical literacy. The research employs a design research methodology with two phases: preliminary design and formative evaluation. The formative evaluation phase includes self-evaluation, expert review, one-to-one testing, small group testing, and field testing. Data analysis is conducted using descriptive methods. The study produced ten PISA-type mathematical problems contextualized with the Siger Tower. These problems were validated in terms of content, construct, and language by expert reviewers and through one-to-one testing. Practicality was assessed during small group testing, and potential impacts on mathematical literacy were evaluated during field testing. The findings indicate that the developed problems effectively engage various basic mathematical skills, thereby promoting mathematical literacy.

Demotivating factors in teaching mathematics: A study of Albanian teachers Pepkolaj, Lekë; Arnal-Palacián, Mónica; Begué, Nuria; Prahmana, Rully Charitas Indra
Jurnal Infinity Vol 13 No 1 (2024): VOLUME 13, NUMBER 1, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v13i1.p27-44

Several studies have highlighted the existence of demotivated teachers in schools. There are several demotivating factors that influence the decisions and commitment that a teacher can acquire. The literature review allows us to characterize the factors that different authors identify to explain teacher demotivation. This article aims to analyze some of the factors that influence mathematics teachers' demotivation and the evaluation of the degree of demotivation in relation to work environment, teaching autonomy, extrinsic values, and students. The information was collected from a questionnaire consisting of 24 items, which was given to 121 active Albanian teachers teaching at different levels of education. These data were analyzed using a quantitative methodology. The independent variables gender, teacher's age, qualification, pupils' age, and type of school are also considered to perform a multivariate analysis. From the results obtained, we can state that the factors that generate the greatest demotivation are textbooks, political conversion and corruption, aspects related to the curriculum, and the costs they must bear. In addition, school status, curriculum changes, meritocracy, material costs, autonomy, and research significantly explain the demotivation of public sector teachers. It highlights the need to seek structured responses aimed at regulating teaching careers.

When religion meets mathematics: From mathematical anxiety to mathematical well-being for minority group student Diponegoro, Ahmad Muhammad; Khalil, Ibrahim Alhussain; Prahmana, Rully Charitas Indra
Jurnal Infinity Vol 13 No 2 (2024): VOLUME 13, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v13i2.p413-440

The mission of positive psychology is to mitigate negative emotions while bolstering positive ones, thereby influencing student engagement in classroom learning activities, including mathematics. This study elucidates the Realistic Mathematics Education (RME) approach within the framework of Islamic teachings—specifically, inheritance law and charity—in the context of fractions and number operations. Its objective is to alleviate mathematics anxiety, a prevalent negative emotion, and enhance well-being during mathematical learning. Drawing upon flow theory from positive psychology, the research endeavors to optimize mathematical well-being by crafting appropriately challenging questions. Employing a descriptive qualitative methodology, the study focuses on an Indonesian mother and her ten-year-old son, residing in Uithoorn, Amsterdam, Netherlands, belonging to minority groups in ethnicity and identity, with religion being a significant aspect of their lives. Data collection involves observation, interviews, tests, and documentation, with analysis employing data reduction, presentation, triangulation, and verification techniques. The study utilizes socio-religious problems as a context, one of the characteristics of RME, such as inheritance division, to design mathematical challenges. The findings demonstrate a marked transition from math anxiety to math well-being, manifested through heightened enthusiasm and cheerfulness in learning mathematics, particularly by the mother. Noteworthy transformations include increased engagement, generous gestures towards the teacher, and frequent smiling, contrasting with previous instances of math anxiety during learning sessions. Furthermore, the results indicate that RME facilitates comprehension of mathematical concepts and fosters understanding of the intersection between mathematics and Islamic life among minority groups, as detailed in this article.

Mathematics teachers’ practices in light of the effective teaching practices Awaji, Bakri M.; Abdel-Hamid, Rasha Hashim; Khalil, Ibrahim Alhussain; Prahmana, Rully Charitas Indra
Jurnal Infinity Vol 14 No 1 (2025): VOLUME 14, NUMBER 1, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v14i1.p1-20

Recognising the pivotal role of effective teaching practices in enhancing student learning outcomes, the National Council of Teachers of Mathematics (NCTM) has outlined a comprehensive framework of key strategies. However, empirical research on these practices remains limited. Therefore, this study aimed to investigate the extent to which mathematics teachers apply NCTM-identified effective teaching practices and examine potential differences attributable to teachers' gender and teaching experience. Adopting a quantitative approach and employing a descriptive survey, the study systematically assessed eight designated practices using a validated observation checklist in the Jazan Education Administration, observing 38 mathematics teachers during routine classes. The results indicated a moderate level of implementation overall, with ten practices demonstrating high application. Statistical analyses found no significant differences in practice implementation based on gender or teaching experience at the .05 level. The limitations included the study's relatively small sample size, potentially limiting generalisability, and the observational nature of the checklist, which may not fully capture nuanced teaching dynamics. Future research could focus on developing training initiatives to enhance educators' application of NCTM-recommended practices and undertake qualitative inquiries to understand barriers to integration and teachers' attitudes towards these practices. Finally, this study contributes to the discourse on effective mathematics teaching by providing empirical insights into current practices and highlighting avenues for further investigation and professional development in educational settings.

The Impact of Realistic Mathematics Education-based Student Worksheet for Improving Students’ Mathematical Problem-Solving Skills Tumangger, Wana Rukmana; Khalil, Ibrahim Alhussain; Prahmana, Rully Charitas Indra
IndoMath: Indonesia Mathematics Education Vol 7, No 2 (2024): August 2024
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/indomath.v7i2.122

Mathematical problem-solving ability is a critical skill required to meet the challenges of the 21st century, making it imperative for Indonesian students to master these skills. However, international assessments have consistently shown that Indonesian students' competencies, particularly in mathematical problem-solving, remain low. Research attributes this deficiency to the lack of connections between mathematical concepts and real-life applications, which are essential for enhancing problem-solving skills. On the other hand, Realistic Mathematics Education (RME) is a learning approach that emphasizes the integration of real-world contexts in learning activities and has been shown to improve these skills. Therefore, this study aims to develop a student worksheet based on the RME approach to enhance students' problem-solving abilities. The development process followed the ADDIE model, which includes the stages of analysis, design, development, implementation, and evaluation. Various research and development instruments were employed, including validation by material and media experts, student assessments of the electronic worksheets, and pre-test and post-test evaluations. Data collection methods encompassed both non-test and test techniques. The results demonstrate that the developed student worksheets are valid, practical, and effective. The validity was confirmed by high average scores from material and media expert validators, categorizing the worksheets as valid. Practicality was supported by positive student assessments, placing the worksheets in the practical category. These findings indicate that the developed worksheets significantly enhance students' problem-solving abilities. This study provides empirical evidence supporting the effectiveness of the RME approach in improving mathematical problem-solving skills among Indonesian students. It also offers a theoretical and practical framework for advancing mathematics education in Indonesia, advocating for the adoption of learning approaches that better address the demands of the 21st century. Detailed analysis of the product's acceptability and impact will be discussed further in the paper.

Co-Authors A. Aidahani A.A. Ketut Agung Cahyawan W Aan Hendroanto Abdel-Hamid, Rasha Hashim Abdul Aziz Adrelia, Dyah Indah Afifah Hanun Afit Istiandaru Afit Istiandaru, Afit Ageng Triyono Agus Darwanto Agustina Sri Purnami Ahmad Azhari Ahmad Muhammad Diponegoro Ai Len Gan Ajeng Ramadhani Aji Prasetya Wibawa Alberta Parinters Makur Alfa Saleh, Alfa Alfiatun Fitriani Ulfah Alghiffari, Eka Kevin Andi Aras Andriyani Andriyani Anggraini, Padhila Angraini, Padhila Ani Susanti Annisah Kurniati ANNISAH KURNIATI Anny Sovia Anny Sovia Aras, Andi Ardhi Ardhian Arie Purwa Kusuma Armianti Armianti Armianti, Armianti Arnal-Palacian, Monica Awaji, Bakri M. Bautista, Guillermo Jr. Bedilius Gunur Begué, Nuria Benidiktus Tanujaya Binti Anisaul Khasanah Buhaerah Buhaerah Buhaerah Buhaerah, Buhaerah Burhanudin Arif Nurnugroho Busrah, Zulfiqar Cosette Crisan Crisan, Cosette D'Ambrosio, Ubiratan Daniel Asamoah Daniel Clark Orey Danty Rahmasantika Darhim Darhim Dawuh Nuril Wildan Dedi Muhtadi Dedi Muhtadi, Dedi Delsi K Delsi K Dewi Malihatuddarojah Digdayana, Infiks Unggul Duano Sapta Nusantara Dwi Astuti Dyah Indah Adrelia Endo, Hiroyuki Enggar Tri Aulia Epi Balingga Epi Balingga, Epi Euis Eti Rohaeti Evans, Brian Evans, Brian R. Farida Nurhasanah Fawziah Zahrawati B Fitri, Nur Lailatul Fitri, Nur Lailatul Fitriyah Fitriyah Fran, Frankie A. Habibi Habibi Hanun, Afifah Hanun, Afifah Haryani Mohammad Heris Hendriana Heris Hendriana Heris Hendriana Heriyadi Heriyadi Hidayat, Agus Sofian Eka Hildegardis Mulu Hildegardis Mulu HU Kalsum I Made Dharma Atmaja Ibrahim Ibrahim Alhussain Khalil Ibrahim Alhussain Khalil Idrus, Sayid Wahyu Alwi Sidik Al Indah Lestari Irma Fatmawati Irma Fatmawati Irma Risdiyanti Irma Risdiyanti Irwan Akib Isaeni, Nita Isnaini, Uha Iswahyudi Joko Suprayitno Jeinne Mumu Jojo, Zingiswa Jumaisa Jumaisa Jumaisa, Jumaisa Juniarti, Anita Kartika Dyah Wardani Khairullah Khalil, Ibrahim Alhussain Khasanah, Mirsatun Klara Iswara Sukmawati Kristina Kurniati Kurniati, Annisah Kurniawati, Venny Kusaeri, Al Kusaka, Satoshi Laela Sagita Laela Sagita Laila Fatika Nuari Laila Fatika Nuari Laksmiwati, Pasttita Ayu Lavicza, Zsolt Lekë Pepkolaj Lestari, Resti Madiana Lina Handayani Lisnani Lisnani Lo, Jane-Jane M. Norhailawati Maisyarah, Siti Malihatuddarojah, Dewi Manikmaya, Pratita Maryati Maryati Maryati Maryati Maryati Maryati Masitah Shahrill Masitah Shahrill Masitah Shahrill, Masitah Maureen Siew Fang Chong Mayangwuri, Sotya Megawati - Meita Fitrianawati Miftahul Hidayah, Miftahul Milton Rosa Mónica Arnal-Palacián Mónica Arnal-Palacián Muhamad Saleh Muhammad Isa Muhammad Isa Mulia Putra Mumu, Jeinne Murni Murni Murni Musafir Rastuti Muya Barida Nguyen, Tien-Trung Niken Wahyu Utami Nisa Syakrina Novi Murniati Novi Murniati, Novi Noviyanti, Putu Ledyari Nuari, Laila Fatika Nuari, Laila Fatika Nur Lailatul Fitri Nur Lailatul Fitri Nur Robiah Nofikusumawati Peni Nurdiansyah Nurdiansyah Nuria Begué Nurnaningsih, Laila Nurul Fajri Oktarika Trissiana Oktavia Filda Yanti Oktavia Filda Yanti, Oktavia Filda Oktinasari, Hanifah Orey, Daniel Clark Padhila Angraini Padhila Angraini Pangestuti, Suci Pardi, Muhamamad Habib Husnial Payadnya, I Putu Ade Andre Pebrianto Pebrianto Pebrianto, Pebrianto Pepkolaj, LekÃ« Pepkolaj, Lekë Permita, Adinda Indah Petra Suwasti Petra Suwasti, Petra Puguh Wahyu Prasetyo, Puguh Pujiastuti, Nur Ika Puri Pramudiani Putranti, Sagita Dyah Putrawangsa, Susilahudin Rachmadi Widdiharto, Rachmadi Ragil Fitriani Rahayu, Winda Rahma Wahyu Rahmah, Nada Auliya Rahmasantika, Danty Rahmasantika, Danty Rahmi Purwitaningrum Rahmi Ramadhani Ramda, Apolonia Hendrice Ratu Ilma Indra Putri Resti Madiana Lestari Resti Madiana Lestari Retnawati, Sri Reza Lestari Risdiyanti, Irma Risdiyanti, Irma Risnawati Ahmad, Risnawati Risnawati Risnawati Risnawati Risnawati Ristiana, Novita Risty Mustika Hardini Rita Novita Rizqa Yunisha Robiansyah Robiansyah Robiansyah, Robiansyah Rosa, Milton Roy, La Rusli P. D. Kolnel Sabitzer, Barbara Sagita Dyah Putranti Sahar Abbas Ibrahim Samsul Arifin Schmidthaler, Eva Setialaksana, Wirawan - Setyawan, Fariz SH Bakri Shahidayanti, Tutik Silfanus Jelatu Siti Maisyarah Soeharto Sofwan Adiputra, Sofwan Sri Adi Widodo Sri Adi Widodo Sukirwan Sukirwan Sukirwan Sukirwan Sukmawati, Klara Iswara Sundari Gita Pertiwi Syakrina, Nisa Syakrina, Nisa Tanikawa, Kanako Teguh Wibowo Tika Septia Tika Septia Tri Sutanti Tri Sutanti, Tri Trissiana, Oktarika Tumangger, Wana Rukmana Ubiratan D'Ambrosio Uha Isnaini Ulfah, Alfiatun Fitriani Venny Kurniawati Wahid Yunianto Wahyu Hidayat Wahyu Hidayat Wahyu Hidayat Wahyu Hidayat Wahyu, Rahma Warsito Warsito Warsito Warsito Wildan, Dawuh Nuril Winda Rahayu Wiwik Wiyanti Wiwik Wiyanti, Wiwik Wiyatno, Toyo Yaya S Kusumah Yulyanti Harisman Yundari, Yundari Yunianto, Wahid Yunisha, Rizqa Yusuf Hartono Zahrawati B, Fawziah Zainuri Saringat Zubaidah Amir MZ Zubaidah Amir MZ Zulfiqar Busrah Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi

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