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Duano Sapta Nusantara

Universitas Jambi

Author-ID : 1940378

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Exploring Creative Thinking in Solving Open-Ended Statistical Problems: A Descriptive Study of Grade 12 Learners at SMA Negeri 14 Jambi Putri, Maifa Munsyaila; Rohati, Rohati; Nusantara, Duano Sapta
Journal of Mathematics Instruction, Social Research and Opinion Vol. 4 No. 4 (2025): December
Publisher : MASI Mandiri Edukasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58421/misro.v4i4.789

This study examines the creative thinking of Grade 12 students in solving open-ended statistical problems. The research addresses the problem of limited understanding of how students with different mathematical ability levels demonstrate creative thinking when working with open-ended statistical tasks, and aims to describe the fluency, flexibility, originality, and elaboration reflected in their solutions. Three students representing high, medium, and low achievement levels were selected through purposive sampling to capture varied mathematical abilities. Data were collected through written tests and interviews, and analyzed using indicators of fluency, flexibility, originality, and elaboration. An exploratory, qualitative approach was employed to gain in-depth insights into students’ reasoning processes. Results show that the high-achieving student generated two valid datasets (mean = 25, median = 23, mode = 20), the medium-achieving student produced one nearly accurate dataset (mean = 24.9), and the low-achieving student produced a dataset with a mean of 23.5. For the second problem, all students obtained b = 12, but only the high-achieving student justified why it is the minimum. In the third problem, all calculated the average yield as 1.225 tons, yet only the high-achieving student provided a contextual interpretation. These findings indicate that open-ended tasks reveal clear differences in students’ creative thinking. The results suggest that incorporating open-ended problems into statistics lessons can enhance students’ creative mathematical reasoning and support the development of higher-order thinking.

Exploring Junior High School Students’ External Representations in Solving Solid Geometry Problems: A Descriptive Qualitative Study Wibowo, Fadhia Aliva; Rohati, Rohati; Nusantara, Duano Sapta
Journal of General Education and Humanities Vol. 4 No. 4 (2025): November
Publisher : MASI Mandiri Edukasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58421/gehu.v4i4.734

External representation is essential in mathematics learning because it enables students to express and operationalize abstract ideas. However, many junior high school students still struggle to coordinate visual, mathematical, and verbal representations when solving solid geometry problems. This study aims to explore how students demonstrate external representations in solving solid geometry tasks by analyzing their pretest responses. A descriptive qualitative method was used involving nine students who completed a pretest, from which three were purposively selected to represent high, medium, and low levels of external representation ability. Data were collected using a test instrument based on indicators of visual, mathematical, and verbal representations. The results show that high-performing students can consistently produce accurate visualizations, mathematical expressions, and written explanations, while medium-performing students demonstrate inconsistent and partial representations. Low-performing students encounter major difficulties in generating meaningful representations. The findings suggest that teachers should strengthen geometry instruction by promoting the balanced use of visual, mathematical, and verbal representations to support students’ conceptual understanding.

Revealing the Numeracy Skills of Eighth-Grade Students in Solving PISA 2022 Quantity Content Problem Pradypta, Jihan Adi; Nusantara, Duano Sapta; Junita, Ranisa; Ibarra, Florante P
Edumatika Vol 8 No 2 (2025): November 2025, Edumatika : Jurnal Riset Pendidikan Matematika
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan IAIN Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/ejrpm.v8i2.6153

This study is qualitative descriptive research that aims to describe eighth-grade students’ numeracy skills in solving a PISA 2022 quantity content problem. This focus is important because PISA-type tasks require reasoning, quantitative interpretation, and decision-making skills that are essential for students’ mathematical literacy in real-life situations. Thirty-two students from class VIII A of a junior high school in Jambi, Indonesia, participated in this study. Data were collected through a written test adapted from the PISA 2022 released items and follow-up interviews with selected students. The results showed that most students demonstrated low numeracy performance, particularly in interpreting information, performing multi-step calculations, and drawing correct conclusions. Only a small number of students were able to meet the expected indicators of numeracy skills. These findings indicate that students have not yet fully met the cognitive demands of PISA quantity tasks. The results highlight the need for instruction that provides more opportunities for students to practice contextual quantitative reasoning. For classroom practice, teachers are encouraged to incorporate multi-step contextual tasks that gradually strengthen students’ interpretation, strategy selection, and reasoning abilities. The findings also serve as a basis for further research on developing PISA-type jumping tasks adapted to relevant local contexts to support students’ numeracy skills.

Exploration of students’ errors in solving PISA problems on the uncertainty and data content Turnip, Mario David; Pasaribu, Feri Tiona; Nusantara, Duano Sapta
Eureka: Journal of Educational Research Vol. 4 No. 1 (2025): In Progress
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ejer.v4i1.93

Indonesian students’ relatively low performance in PISA has been closely linked to their difficulties in applying mathematical knowledge to real-world contexts, which often led to errors. The main objective of this study was to explore the types of mistakes students made when solving PISA-type questions within the content area of uncertainty and data. This research was qualitative descriptive in nature. The research subjects consisted of five ninth-grade students from a junior high school in Jambi Province, selected based on teacher recommendations. Data were collected through tests and interviews. The results of the study showed that students frequently made mistakes at the stage of writing the final answer, primarily due to difficulties in interpreting the given information and focusing too heavily on calculation procedures while overlooking what the problem was actually asking. These findings provide a basis for further research on analyzing students’ mathematical literacy skills in solving PISA questions, particularly within the domain of uncertainty and data.

Assessing Students’ Mathematical Literacy through PISA Items in the Space and Shape Content Marsyandia, Inaara Pangesti; Nusantara, Duano Sapta; Gustiningsi, Tria
Brillo Journal Vol 5 No 1 (2025): -
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v5i1.153

This study aims to analyze students’ mathematical literacy in solving PISA problems, particularly in the space and shape domain. The research approach used is a qualitative approach. This type of research is qualitative descriptive approach. The study involved 27 ninth-grade students from one of Junior High School (JHS) in Kota Jambi. Data were collected through a written test using items adopted from the 2012 PISA Mathematics Released Problems, complemented by interviews to gain deeper insights. The results revealed that students’ mathematical literacy abilities were categorized into high, medium, and low levels. The results show that most students demonstrate low mathematical literacy skills. Based on the three indicators of mathematical literacy, students in the high-ability category were able to formulate mathematical models, employ geometric concepts appropriately, and interpret the results within the given context. Students in the medium category were able to perform correct procedures but were unable to derive meaningful conclusions, while students in the low category experienced difficulties in all indicators. These findings indicate that students’ mathematical literacy skills in geometry remain limited, particularly in reasoning and interpreting results. Therefore, learning activities that facilitate reasoning and provide more PISA-like tasks are needed to help strengthen students’ mathematical literacy, especially in space and shape problems. Future research may also explore the use of locally contextualized PISA-like tasks to provide students with more meaningful and relatable problem situations.

Hypothetical Learning Trajectory Materi Sistem Persamaan Linear Tiga Variabel: Konteks Jajanan Khas Kepulauan Riau Husna, Asmaul; Zulkardi, Zulkardi; Putri, Ratu Ilma Indra; Susanti, Ely; Nusantara, Duano Sapta
Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika Vol 10 No 1 (2024): Jurnal Math Educator Nusantara
Publisher : Program Studi Pendidikan Matematika, Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmen.v10i1.21550

This study aims to design a learning trajectory for the Three-Variable Linear Equation System (SPLTV) by applying Indonesian Realistic Mathematics Education (PMRI) with the context of typical Riau Islands snacks. The research methodology involved three stages, namely preparing for the experiment, design experiment, and retrospective analysis. Data were collected through documentation and interviews, then analyzed by data reduction, data presentation, and conclusion drawing. The research subjects were 15 3rd semester students of the Mathematics Education Study Program at Riau Islands University. The results of the research are in the form of a hypothetical learning trajectory design in learning SPLTV with the context of typical snacks of the Riau Islands. The learning trajectory begins by linking students' learning experiences with the concepts to be presented. During learning, students apply the SPLTV concept to contextual problems. In the end, they are able to apply the SPLTV concept in different contexts, demonstrating an understanding of the material. This contextualized learning experience plays an important role in improving students' understanding of SPLTV.

Co-Authors Aan Putra Abdullah, Abdul Halim Ade Kumalasari Agyta Meitrilova Ambarita, Sahala Martua Andika, Windi Dwi Aprilisa, Shinta Arika Sari Asmaul Husna Ayu Luviyanti Tanjung Berliani, Risma Cahyani , Feby Indah Chn, Rafika Riana Delia Septimiranti Deska, Salsabila Putri Dewi Rawani Dita Nur Syaharani Drajat Friansah Elika Elika ELLY SUSANTI Elly Susanti Ely Susanti Febrianty, Annisa Felisha , Melvi Feri Tiona Pasaribu Feri Tiona Pasaribu Herlambang, Satria Bayu IBARRA, FLORANTE P Ibarra, Florante P. Ida Hamidah Iswari, Ira Jayanti Jayanti Jayanti Juniarmi, Intan Junita, Ranisa Kiraam, Rachma Laswadi Laswadi Linda Puspitasari Lisnaini Lisnaini Lusiana Lusinda, Uci Maharani Maharani, Yulianita Malalina Malalina Maphutha, Kgaladi Marhamah Marhamah Marlina Marlina Marsyandia, Inaara Pangesti Meitrilova, Agyta Meryansumayeka Meryansumayeka Mohamad Ilhami Ninik Purwaning Setyorini Novi Rahmayanti Novi Susanti Partono Partono Perdana, Yogi Permatasari, Ranni Pradypta, Jihan Adi Pratama, Nasya Aprina Pratiwi, Riszky Pabela Priyanto Puspitasari, Linda Putri, Maifa Munsyaila Rahayu, Chika Ranni Permatasari Ratu Ilma Indra Putri Rini Rini Risda Intan Sistyawati Risdiyanti, Irma Riszky Pabela Pratiwi Rita Inderawati Rohati Rohati Roseli Theis Rully Charitas Indra Prahmana Sahala Martua Ambarita Sainuddin, Syamsir Sakiman, Novi Komariyatiningsih Samsuriyadi Samsuriyadi Samsuryadi Samsuryadi Samsuryadi Sari, Filian Yunita Saskiyah, Sulafah Ansya Sepriliani, Sisca Puspita Setiyani, Eka Denti Setyorini, Ninik Purwaning Sisca Puspita Sepriliani Sistyawati, Risda Intan Siti Amanah Soleha, Dwi Ardanti Sophia Rahmawati Sri Sumarni Sri Winarni Suci Hayati Sulafah Ansya Saskiyah Sutrimo Sutrimo, Sutrimo Syutaridho Syutaridho Tanjung, Ayu Luviyanti Tria Gustiningsi Tria Gustiningsi Turnip, Mario David Wardi Syafmen Wibowo, Fadhia Aliva Yufitri Yanto Yulianita Maharani Yusuf Hartono Zahra Alwi Zahra Alwi, Zahra Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi

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