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All Journal English Review: Journal of English Education Jurnal Pendidikan Matematika RAFA Jurnal Elemen HISTOGRAM: Jurnal Pendidikan Matematika MaPan : Jurnal Matematika dan Pembelajaran Jurnal PAJAR (Pendidikan dan Pengajaran) Journal of Honai Math Indiktika : Jurnal Inovasi Pendidikan Matematika Jurnal Pendidikan Matematika (JUDIKA EDUCATION) IJID (International Journal on Informatics for Development) Jurnal Berdaya Mandiri Jurnal Math-UMB.EDU Mosharafa: Jurnal Pendidikan Matematika LINEAR: Journal of Mathematics Education Inovasi Matematika (Inomatika) Lattice Journal : Journal of Mathematics Education and Applied Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Mathematics Education Journal Journal on Mathematics Education
Zulkardi
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The development of web-based learning environment to enhance students’ numeracy and reasoning Adelia, Viona; Putri, Ratu Ilma Indra; Zulkardi; Doorman, Michiel
Journal on Mathematics Education Vol. 16 No. 2 (2025): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v16i2.pp651-670

Abstract

Despite the growing emphasis on numeracy as a critical outcome of mathematics education, many instructional approaches fail to connect numeracy learning with students’ reasoning development in meaningful ways. Existing research has not sufficiently explored the integration of technology-supported environments for fostering numeracy through theoretically grounded task design. Addressing this gap, the present study introduces a novel web-based learning environment grounded in numeracy theory and task design principles aimed at enhancing students' numeracy competence and mathematical reasoning. The development and implementation process involved iterative trials with 25 fifth-grade students: a one-to-one trial (n = 2), a small-group trial (n = 5), and a field trial (n = 18). Data were collected from students’ written responses on the web-based platform and their oral explanations. Findings demonstrate that the developed environment meets three key criteria: validity, as it aligns with relevant theoretical and empirical foundations; practicality, based on its usability and feasibility for students; and effectiveness, as evidenced by improved reasoning skills. These results highlight the potential of well-designed web-based learning environments to meaningfully support the development of numeracy competence while simultaneously fostering mathematical reasoning in primary education.
Developing mathematics worksheet using futsal context for school literacy movement Effendi, Kiki Nia Sania; Zulkardi; Putri, Ratu Ilma Indra; Yaniawati, Poppy
Journal on Mathematics Education Vol. 10 No. 2 (2019): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

School Literacy Movement, one of the government's efforts to optimize the ability of students in terms of literacy, needs support from every circle; one of them is from researches in the educational field. This research aims to develop reading texts in a futsal context that will be presented in students’ worksheet with valid and practical criteria that will have a potential effect in mathematics learning. This research is using the design research method with a development studies type that consists of three main steps, such as preliminary, prototyping, and assessment with an evaluation plot formative study that used in a prototyping step, including the self-evaluation, expert review and one-to-one, small group, and field test. The research subjects are the students in 7th grade in one of Junior High School in Karawang. There are some steps taken in the data collection process, such as documentation, walkthrough, questionnaire, test, and interview. According to the data analysis, it can be concluded that this research has been producing a product in the form of thirteen reading the text for School Literacy Movement invalid and practical mathematics learning that will have a potential effect for the students’ learning result in the mathematics learning process.
Developing mathematics questions of PISA type using Bangka context Dasaprawira, M. Noviarsyh; Zulkardi; Susanti, Eli
Journal on Mathematics Education Vol. 10 No. 2 (2019): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

This study aims to develop a math problem type PISA to familiarize students using problems with PISA standard and produces a valid, practical, PISA context of Bangka (Tanjung Kalian Lighthouse) type and see the Basic Math Skills (BMS) seen from the context of Tanjung Kalian lighthouse. The research method used is design research with the type of research development or development studies. The result of the research is a valid PISA math problem at the expert review stage and one to one, while small group stages do the practicality. The ability that is found in the form of communication, representation, mathematical, reasoning, and argument, and formulates a strategy to solve the problem.
Senior high school mathematics learning through mathematics modeling approach Riyanto, Bambang; Zulkardi; Putri, Ratu Ilma Indra; Darmawijoyo
Journal on Mathematics Education Vol. 10 No. 3 (2019): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

By modeling learning students enjoy learning and doing mathematics in new ways. This study aimed firsly to produce senior high school mathematics modeling tasks, lesson plan, and student worksheet for valid mathematical learning; secondly, to produce senior high school mathematics modeling, lesson plan, and student worksheet for practical mathematics learning; lastly, to produce senior high school mathematics modeling tasks, lesson plan, and student worksheet for potentially effective mathematics learning. This study used method of development research that consisting of 3 steps, i.e., analysis, design, and evaluation. In the analysis stage, researcher did student analysis, curriculum, and mathematical modeling. Second stage are to design and product. Finally, researchers applied a design of formative evaluation consists of self-evaluation, one-to-one, experts review, small group, and field test. Based on experts review, one-to-one, small groups, and field test were obtained valid, practical, and potentially effective, i.e. mathematical modeling tasks, lesson plan, student worksheet to teach mathematical modeling in senior high school and Mathematical modeling tasks and student worksheets to learn mathematical modeling in senior high school.
Pengembangan Soal Matematika Tipe Pisa Konten Bilangan untuk Literasi Matematis Siswa SMP Syabaniah, Try Nurisa; Ratu Ilma Indra Putri; Zulkardi
Jurnal Pendidikan Matematika : Judika Education Vol. 8 No. 4 (2025): Jurnal Pendidikan Matematika:Judika Education
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/ev90kv23

Abstract

This study aims to develop a PISA-type test set based on real-world contexts integrated with strategies to see its effectiveness on junior high school students' mathematical literacy skills. The background of this study is the low achievement of Indonesian students' mathematical literacy in PISA, especially in Quantity content. The method used is design research with the Tessmer model through preliminary and formative evaluation stages (self-evaluation, expert review, one-to-one, and small group). The research subjects were students of class VIII.5 of SMP Negeri 11 Palembang. The results showed that the developed test set was very valid (82.9%) and practical (80%), and had very high reliability (α = 0.959). Students' mathematical literacy skills were in the high (33%), medium (50%), and low (17%) categories. The achievement of the Formulate indicator was 80.83%, Employ 76.94%, and Interpret 70.56%. These findings indicate that the problem set can strengthen students' mathematical literacy skills, especially in understanding context and developing problem-solving strategies, although mathematical interpretation and justification skills still need to be improved.   Keyword : Quantity content, Mathematical literacy skills, PISA type questions
Learning integers with realistic mathematics education approach based on islamic values Muslimin; Putri, Ratu Ilma Indra; Zulkardi; Aisyah, Nyimas
Journal on Mathematics Education Vol. 11 No. 3 (2020): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

Mathematical learning not only produces students who succeed in mathematical and procedural calculations but also develops religious thinking. Realistic mathematics education with the context of Islamic values makes students can imagine, which is one of the right ways to develop the skills of students’ creativity, collaboration, and communication. This study aims to describe the learning trajectory that can help students understand integers with a realistic mathematics education approach based on Islamic values. It is hoped that student responses are positive, meaningful, and enjoyable. This research uses the design research method, which is a form of a qualitative approach. There are three stages in this research, namely: preliminary design, experimental design, and retrospective analysis. The results showed that the Hypothetical Learning Trajectory (HLT) trial with an Islamic value-based context showed significant progress based on student responses. Initially, students had difficulty understanding integers, but they felt delighted to follow the learning process along with the habituation. The HLT technique used in habituation was through pilot experiments, followed by teaching experiments. Students respond very positively and are happy to follow it by seeing the very significant development of their abilities during the learning process.
How students work with PISA-like mathematical tasks using covid-19 context Zulkardi; Putri, Ratu Ilma Indra; Alwi, Zahra; Nusantara, Duano Sapta; Ambarita, Sahala Martua; Maharani, Yulianita; Puspitasari, Linda
Journal on Mathematics Education Vol. 11 No. 3 (2020): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

School students can use a sequence of contextual tasks to learn mathematics. We can use Covid-19 as a phenomenon or context to exploit in learning mathematics. This article describes how students learn with mathematical problems that adapted PISA tasks and used the Covid-19 context. This study involved 29 secondary-level students, 15 years old, and each has different levels of mathematical skills. We use three phases of design research as the research method. Data were collected using observation, interviews, and documents. Then, they were analyzed descriptively. The result showed there were ten problems developed, and students were asked to work with those problems. We found that there are steps in how students understand and solve the problem. First, if students find a picture in the task, then they observe at the picture, read the question, and then start working to solve the problem. Second, if students find a table with less data, students refer to all data in solving the problem. Third if students find a table which has a lot of data, then some students calculate all of the data and other only compared among them. We’d like to encourage students to understand the problem before solving the problem. They do this by observing the pictures, comprehending the tables and also the questions
Designing PISA-like mathematics task using Asian games context Putri, Ratu Ilma Indra; Zulkardi
Journal on Mathematics Education Vol. 11 No. 1 (2020): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

This study aimed to produce a set of valid, practice and had potential effects of PISA-like mathematics tasks using Asian Games context to support students learning. Design research and lesson study were used as the method both during the design and implementation stages. Target users are 15th years old middle school students from PMRI pilot schools in Palembang. Results show that a set of PISA-like problems on uncertainty and data content are valid, practical, and had a potential effect. Students were doing mathematics in a collaborative, and the learning process becomes meaningful and easily.
In memory of Jan de Lange and Kees Hoogland: Honoring their legacy and contributions to mathematics education in Indonesia Zulkardi; Prahmana, Rully Charitas Indra; Putri, Ratu Ilma Indra
Journal on Mathematics Education Vol. 16 No. 2 (2025): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v16i2.pp753-762

Abstract

Inspired by the wisdom of Ali bin Abi Talib—that written legacies outlive their authors—this paper presents a scientific narrative exploring the contributions of Professor Jan de Lange (JDL) to the global and Indonesian mathematics education landscape. Renowned for his work in Realistic Mathematics Education (RME), the Trends in International Mathematics and Science Study (TIMSS), and the Programme for International Student Assessment (PISA), JDL played a pivotal role in the transformation of Indonesia’s mathematics education reform in the late 1990s. His engagement began in 1998 when, alongside Prof. Tjeerd Plomp, he responded to an invitation from Prof. R.K. Sembiring to introduce RME as an alternative to the outdated modern mathematics approach. This effort led to the birth of Pendidikan Matematika Realistik Indonesia (PMRI). The reform initiative included the selection and training of Indonesian doctoral candidates through a collaborative workshop held at Institut Teknologi Bandung (ITB), resulting in advanced studies in the Netherlands. Among these scholars was Prof. Zulkardi, who became a central figure in promoting RME and PMRI in Indonesia. JDL’s involvement continued through mentorship, keynote lectures, and academic collaborations, significantly influencing mathematics education policy and practice. His thought-provoking publications reflect his enduring commitment to curiosity-driven, student-centered learning. The paper also acknowledges the contributions of Prof. Kees Hoogland, JDL’s close colleague and fellow RME advocate. Together, their work exemplifies a vision of mathematics as meaningful, contextual, and empowering. Their legacy lives on through generations of educators and learners shaped by their transformative ideas.
Students’ Communication Skill and Algebraic Thinking through Commognitive Framework in Algebra Learning Pratiwi, Weni Dwi; Zulkardi; Putri, Ratu Ilma Indra; Hiltrimartin, Cecil
Mathematics Education Journal Vol. 19 No. 3 (2025): Mathematics Education Journal
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/mej.v19i3.pp413-436

Abstract

Mathematical communication is a skill to articulate mathematical ideas through written and verbal expressions. Despite its importance, students often exhibit difficulties in initiating and organizing mathematical ideas, particularly in written form. Prior research highlights the critical role of communication in fostering early algebraic thinking. This study aims to: (1) examine students’ mathematical communication skills and explore how it reflects early algebraic thinking, using the commognitive framework, which encompasses word use, visual mediators, narratives, and routines, and (2) describe statistically the relationship between algebraic thinking and oral communication skills. A descriptive research design with mixed-methods approach was employed, involving 29 eighth-grade students as participants. Data was collected through written tests, and the results were analyzed descriptively. The findings indicate that four students demonstrated excellent communication skills, nine students were categorized as good, 11 students as fair, three students as poor, and two students as very poor. Further analysis showed that students with stronger communication skills more effectively conveyed algebraic ideas. The results also underscore the commognitive framework practical application in enhancing students’ conceptual understanding. This study contributes to a deeper understanding of how students communicate, reason algebraically, and demonstrates the potential of the commognitive framework to support instructional design and skill development in mathematics education.
Co-Authors Aan Putra Adelia, Viona Adha, Idul Adi Nur Cahyono Agustina, Amalia Aini, Indrie Noor Ainun Jariyah Allen Marga Retta, Allen Marga Amarta, Nadiati Ambarita, Sahala Martua Andita, Sintia Anggria Septiani Mulbasari, Anggria Septiani ANISAH Anna Fauziah Apertha, Fanny Khairul Putri Aprilisa, Shinta Arvin Efriani Aulia Oktarina, Detia Bambang Riyanto Budi Mulyono Cecil Hiltrimartin Chyrza Adhea Salsabila Darmawijoyo, Darmawijoyo Dasaprawira, M. Noviarsyh Dewi Rawani Dewi, Agatha Indy Candra Dhany Fachrudin, Achmad EDWAR Effendi, Kiki Nia Sania Eka Fitri Puspa Sari, Eka Fitri Puspa Eka Putri Eli Susanti ELLY SUSANTI Elsa Susanti Elvina, Nova Ely Susanti Eni Yulianti Ermatita - Evy Yosita Silva Fitrianty Munaka Hapizah Haris Kurniawan, Haris Hasanah, Mifta Nur Ida Ayu Putu Sri Widnyani Ida Hamidah Ika Pratiwi Intan Bigita Kusumawati, Intan Bigita Iqbal Kharisudin Izza Della Nur Rizki Jannah, Riya Dhotul Jayanti Jurnaidi Ketang Wiyono Laela Sagita Laswadi Laswadi Lavicza, Zsolt Lewy Lisnani M. Hasbi Ramadhan, M. Hasbi Maharani, Yulianita Malalina Marhamah Marhamah Marhamah Mariska Yusuf Meitrilova, Agyta Meryansumayeka Meryansumayeka MICHIEL DOORMAN, MICHIEL Miftahudin Misdalina Mouli, Mutia Febri Muhamad Yusup Muhammad Iqbal MUSLIMIN Mustikasari N. Fahriza Fuadiah Nisa, Sholihatun Novita Sari Nur Listiawati, Nur Nusantara, Duano Sapta Nyimas Aisyah Nyimas Aisyah Permatasari, Ranni Pratiwi, Riszky Pabela Pratiwi, Weni Dwi Purwasi, Lucy Asri Purwoko Puspitasari, Linda Putri Aisyah Putri, Dhea Anisah Rafika Sari Rahayu, Chika Rahma Siska Utari Ratu Ilma Indra Putri Ratu, Ratu Ilma Indra Putri Retni Paradesa Rini Herlina Rusiyanti Risdiyanti, Irma Riskanita, Arini Dyah Rully Charitas Indra Prahmana Rusdy A Siroj Safrudiannur Samsuryadi Saputri, Nety Wahyu Sari, Filian Yunita Saskiyah, Sulafah Ansya Sepriliani, Sisca Puspita Setyorini, Ninik Purwaning Shinta Puspasari Siligar, E.I Pusta Simon Sili Sabon, Simon Sili Sinaga, Heny Sistyawati, Risda Intan Siswantari Siti Fatimah Sitisyarah, Kania Somakim, Somakim Subijanto Sujinal Arifin Sukasno Sukasno Sukestiyarno, Yulius Leonardus Sukma, Yovika Sumardi, Hari Supratik Surya Amami Pramuditya Susanta, Agus Syabaniah, Try Nurisa Sylvenny Mirandah Syutaridho Syutaridho Syutaridho Tanjung, Ayu Luviyanti Tati Tri Astuti, Yeni Tria Gustiningsi Trimurti Saleh ullya Uswatun Hasanah Utami, Marta Risa Putri Wibowo, Slamet Wirda, Yendri Yaniawati, Poppy Yansen, Dedi Yufitri Yanto Yulia Resti Yulianti Yusuf Hartono Yusup, M Zahra Alwi, Zahra