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Tatag Yuli Eko Siswono

Department Of Mathematics Education, Universitas Negeri Surabaya, Indonesia

Author-ID : 382372

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

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Berpikir Kritis Siswa Kelompok Homogen dalam Pemecahan Masalah Kolaboratif Materi Lingkaran Rachma Mufidah, Latifah Nuryah; Siswono, Tatag Yuli Eko
MATHEdunesa Vol. 13 No. 1 (2024): Jurnal Mathedunesa Volume 13 Nomor 1 Tahun 2024
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v13n1.p94-103

Critical and collaborative thinking are skills that need to be learned in the 21st century. One of the things that can build critical thinking is collaboration. Collaboration is a joint involvement in a coordinated effort to solve problems together through interactions that help each other and understand their tasks to achieve shared goals.The purpose of this study is to describe students' critical thinking in collaborative problem solving of circle material. The type of research used is descriptive research with a qualitative approach. The research subjects were students of SMP Negeri 25 Surabaya grade 8 who were paired with 2 people to solve the problem of circle material. Data collection was conducted in two meetings, one meeting for collaborative problem solving test and one meeting for interview.The results of data analysis show students in homogenous groups of high and high categories can achieve the critical thinking indicators such as interpretation, analysis, inference, evaluation, explanation, and self-regulation and the role of collaboration runs well. The low and low category subjects were lacking in fulfilling the indicators of analysis, inference, evaluation, explanation and self-regulation. The collaborative role of these subjects lacks interaction and there is no exchange of information.

Kemampuan Pemecahan Masalah Kolaboratif Siswa SMP dalam Menyelesaikan Masalah Kontekstual Persamaan Linear Satu Variabel Khoiriyah, Siti; Siswono, Tatag Yuli Eko
MATHEdunesa Vol. 13 No. 3 (2024): Jurnal Mathedunesa Volume 13 Nomor 3 Tahun 2024
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v13n3.p674-693

Collaborative problem solving is an important skill to be mastered in education and work. Collaborative problem solving helps reduce the failure of individual problem solving. This type of research is a descriptive qualitative research that aims to describe the collaborative problem solving ability of grade 7 junior high school students in solving contextual problems of linear equations of one variable. The subjects in this study were six students who were divided into two heterogeneous groups, namely: a group of students consisting of one student each with high, medium and low mathematics abilities. The other group consisted of 2 students with low math ability and 1 student with high math ability.The results showed that the high, medium, and low math ability groups were more successful in solving the given problems than the low and high math ability groups. Both heterogeneous groups designed and implemented problem-solving activities fairly well. But for more complex problems, both groups could not solve well. Students with high mathematical abilities in both groups dominated and contributed more to the solution. Medium ability students are encouraged to be actively involved and contribute to problem solving. While students with low ability are more likely to be passive but one of the low ability students in the high and low groups is quite encouraged and contributes enough in problem solving.

Kemampuan Siswa SMP Dalam Memecahkan Masalah Numerasi Ditinjau Berdasarkan Gender Khotimah, Khusnul; Siswono, Tatag Yuli Eko
MATHEdunesa Vol. 14 No. 2 (2025): Jurnal Mathedunesa Volume 14 Nomor 2 Tahun 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v14n2.p600-610

Problem-solving is a very important part of mathematics learning because, in both the learning process and its application, students have the opportunity to use the knowledge they already possess. One method of problem-solving is using Polya's problem-solving method. At the secondary school level, students consist of both male and female students who inherently have different characteristics and traits. Based on this, a study was conducted with the aim of identifying and describing whether there are differences between male and female junior high school students in solving numeracy problems. This research used a descriptive qualitative method with the subjects being male and female students who have a high level of mathematical ability. The results of the study showed that female students demonstrated a more systematic process in solving numeracy problems, as they were able to write the steps accurately and accompany them with correct results. On the other hand, male students showed a less systematic approach in the problem-solving process, as they tended to skip writing what was known and directly proceeded to the solution steps. Although they sometimes achieved correct results, there were several instances where their answers were inaccurate

The Analyzing Creative Thinking Skills of Junior High School Students in Solving Mathematical Problems with AI Assistance Fauzi, Habibillah Achmad Putra; Siswono, Tatag Yuli Eko; Harini, Novita Vindri
MATHEdunesa Vol. 14 No. 3 (2025): Jurnal Mathedunesa Volume 14 Nomor 3 Tahun 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v14n3.p687-703

This study analyzed the creative thinking ability of junior high school students in solving mathematics problems with the help of Artificial Intelligence (AI). The research employed a qualitative case study approach with three ninth-grade students of varying mathematical abilities (high, medium, and low). Data were collected through tests, observations, and interviews, then analyzed based on creative thinking indicators: fluency, flexibility, originality, and elaboration. The results showed that students' creative thinking skills were in line with their level of mathematical ability, where students with high mathematical ability were able to solve problems using unique approaches and detailed steps. However, there were minor errors in the conclusions. Students with moderate math abilities can use two different strategies, but they are still affected by AI solutions. Students with low math abilities tend to rely on AI-generated answers without modification. This study concludes that students' creative thinking ability is influenced by their conceptual understanding and how they utilize AI. Teachers need to guide students to use AI as an exploration tool, not just a source of answers.

Computational Thinking Abilities of Vocational School Students in Solving Quadratic Function Problems Using Python Programming Language Putra, Misel Rajasyah Hadi; Siswono, Tatag Yuli Eko; Harini, Novita Vindri
MATHEdunesa Vol. 14 No. 3 (2025): Jurnal Mathedunesa Volume 14 Nomor 3 Tahun 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v14n3.p780-804

The Indonesian Minister of Education and Culture implemented the Merdeka Belajar Kampus Merdeka Curriculum in 2019, emphasizing computational thinking (CT) as a crucial 21st-century skill. Despite its importance in mathematics education, most Indonesian mathematics learning has not been oriented toward developing computational thinking abilities. Vocational school students majoring in Software Engineering possess programming knowledge that could potentially enhance their mathematical problem-solving through computational approaches. However, the extent of their CT abilities when applied to mathematical contexts remains unclear. This study aims to describe and analyze the computational thinking abilities of 10th-grade vocational school students majoring in Software Engineering when solving quadratic function problems using Python programming language. This qualitative research employed a case study approach with three purposively selected students representing different proficiency levels (high, moderate, and low) based on standardized programming and mathematics assessment criteria. Data were collected through written tests, structured observations, and semi-structured interviews. The assessment focused on four CT components: decomposition, pattern recognition, abstraction, and algorithmic thinking. The analysis revealed distinct patterns in CT abilities across proficiency levels. High-proficiency students (S1) demonstrated systematic problem decomposition, optimal pattern utilization, effective information filtering, and efficient algorithm development, achieving an average CT score of 91.25. Moderate-proficiency students (S2) showed adequate CT abilities with some limitations in systematic organization and strategic thinking, scoring 78.75 on average. Low-proficiency students (S3) exhibited significant difficulties across all CT components, particularly in problem decomposition and algorithmic thinking, with an average score of 64.25. The findings indicate that students' mathematical foundations significantly influence their CT development when integrated with programming tools. The computational thinking abilities of 10th-grade Software Engineering students vary considerably when solving quadratic function problems with Python assistance. Students with stronger mathematical foundations demonstrate superior CT performance across all components, while those with weaker foundations require substantial scaffolding. These findings highlight the need for differentiated instructional approaches that consider students' varying CT development levels in mathematics education.

Menilai Kualitas Tugas Matematika Buatan Guru SMP dengan Stimulus Soal Berbasis Literasi dan Numerasi yang Menumbuhkan Berpikir Kritis Siswa Ismail, Ismail; Siswono, Tatag Yuli Eko; Masriyah, Masriyah; Abadi, Abadi
MATHEdunesa Vol. 15 No. 1 (2026): Jurnal Mathedunesa Volume 15 Nomor 1 Tahun 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v15n1.p72-80

Questions that encourage students to construct meaning and build mental connections tend to foster critical thinking skills. Previous research on junior high school mathematics teachers shows that, in reality, teachers often have not been successful in teaching students to think critically; instead, they focus more on teaching the subject matter content alone. The problem concerns how to improve the quality of mathematics tasks designed by junior high school mathematics teachers in Pasuruan Regency, and whether the tasks developed by teachers have already fostered students’ critical thinking skills. One effort that teachers can undertake is to use literacy- and numeracy-based problem stimuli in the tasks given to students. However, the development of literacy- and numeracy-based questions that can enhance critical thinking skills has not yet been well mastered by mathematics teachers. Therefore, they need to engage in direct, interactive activities with experts in mathematics education, particularly in the field of critical thinking. Through the workshop on critical thinking–oriented learning for junior high school mathematics teachers in Pasuruan Regency, it is expected that teachers will be able to design literacy- and numeracy-based problem stimuli to be used in critical thinking–oriented mathematics instruction at the junior high school level. The results of the teacher mentoring activities in designing mathematics tasks with literacy- and numeracy-based problem stimuli for critical thinking–oriented mathematics learning at the junior high school level are as follows: 16 out of 19 participants (84%) produced stimuli that were well designed based on literacy and numeracy, containing sufficient information to develop questions that trigger students’ critical thinking skills; 2 out of 19 participants (10.5%) produced stimuli that were fairly well designed based on literacy and numeracy, containing limited information to develop questions that stimulate students’ critical thinking skills; and 1 out of 19 participants (5%) produced stimuli that were poorly designed based on literacy and numeracy, containing no information that could develop questions to stimulate students’ critical thinking skills. Based on the questionnaire results, 53.8% of participants strongly agreed and 46.2% agreed that the workshop materials could be easily understood and applied; 76.9% strongly agreed and 23.1% agreed that the workshop materials were delivered in a well-structured and systematic manner; 84.8% strongly agreed and 15.4% agreed that the resource person mastered the material presented; 61.5% strongly agreed and 38.5% agreed that the resource person presented the material clearly and sequentially; 69.2% strongly agreed and 30.8% agreed that the answers provided by the resource person to participants’ questions were very clear; and 38.5% strongly agreed, 46.2% agreed, while only 15.4% disagreed that the duration of the training was appropriate.

Proses Berpikir Kreatif Siswa dalam Pemecahan Masalah Kolaboratif pada Konteks Open Ended Dewi, Kharisma Normala; Siswono, Tatag Yuli Eko
MATHEdunesa Vol. 15 No. 1 (2026): Jurnal Mathedunesa Volume 15 Nomor 1 Tahun 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v15n1.p93-105

In 21st-century learning, creative thinking and collaboration skills are abilities that need to be developed in every subject, including mathematics. The low level of creative thinking skills among Indonesian students, as shown in the PISA results, as well as students' difficulties in individual problem solving, are important reasons for exploring the collaborative creative thinking process. Therefore, this study uses open-ended questions because this type of question allows for a variety of solution strategies and ideas to emerge, exposing students' creative thinking processes in a collaborative context. This study aims to describe students' creative thinking processes in collaborative problem solving in heterogeneous groups (high, medium, and low). This research is a descriptive qualitative study with two groups of eighth-grade students at a junior high school in Gresik as subjects. Data collection techniques included tests, observations, and interviews. Data analysis was conducted based on the stages of creative thinking according to Siswono (2008) and collaboration competencies according to the OECD (2017). The results showed that Group 1 demonstrated collaboration through active communication, role-sharing, and contributions from all members. This group successfully met all indicators of creative thinking, such as fluency, flexibility, and originality. In contrast, Group 2 was dominated by high-ability students in the early stages, while other members tended to be passive. Although participation increased during the planning phase of idea implementation, this group could only meet the fluency and flexibility indicators. The creative thinking process of both groups went through the stages of synthesizing ideas, developing ideas, planning idea implementation, and implementing ideas. Interaction patterns showed that high-ability students tended to lead, moderate-ability students acted as connectors, and low-ability students were passive but still contributed to task execution.

Co-Authors ABADI Abadi Abadi Abadi Abdul Haris Rosyidi Abdul Haris Rosyidi Abdul Haris Rosyidi ADINDA SURYA PUTRI, NOVIEA Agung Lukito AGUNG LUKITO Agustin, Halimah Nur Ahmad Wachidul Kohar Ain Putri Rustini Ainurrohmah, Indah Ajeng Rara Veronica Alfiati Oktaaviarina Alista Hariyanti Amalina, Ijtihadi Kamilia Amalina, Ijtihadi Kamilia Aminah Ekawati Amirudin, Mochammad Amirudin, Mochammad Anis Shobikhah Aniskurnia Rahmadhani Fajerin Ardiansyah, Dicky Ari Mawanto Arief Budi Wicaksono Armeria Wijaya, Armeria Aryo Andri Nugroho Asma Johan Atik Wintarti Aulia Kholifatul Khasanah Auliya, Ahmad Sulthan AYU SEPTYANI, DWI Ayu Wulandari, Hilaria Yesieka Bahrudin, Eko Rahmad Bonyah, Ebenezer Cahyati, Vania Idelia Ching, Ong Khye Chusnul Fadlilah Dayat Hidayat Defi Imamatus Sholikha Deka Anjariyah Devya, Lenthera Mega Dewi Setianingsih Dewi, Kharisma Normala Dini Kinati Fardah Dita, Farah Dovina Meilisa Nur Fadilla Dwi Juniati Dwi Juniati Dwi Juniati Dwi Nur Yunianti DWI SISWANTORO, MAHMUD Ekawati , Rooselyna Elvita Novia Dinawati Ely Susanti Endah Budi Rahaju Endang Suprapti Endri Puji Lestari Evangelista Lus Windyana Palupi Evy Novia Nanda Artama Fachry Abda El Rahman FARIHATUS SADIYAH, IHDA Farman FATIMA AZZAHRO, ELOK Fatimatul Khikmiyah Fatmanissa, Namirah Fauzi, Habibillah Achmad Putra Fiangga, Shofan FILLAH FR, ASHDAQ Fitmawati, Entya Esa FITRIYAH, NUR Fitriyani Hali, Fitriyani Fran Susanto Galih Kurniadi Galih Kurniadi HABIB MANAN, MUHAMMAD Hanifah, Mifthaqul Harini, Novita Vindri Heng, Limalin Hikmah, Nur Hidayatul I Ketut Budayasa Ida Dwijayanti Ihsani, Ulynnuha Aulia Ijtihadi Kamilia Amalina Ika Dwi Retnowati Ika Kurniasari Ika Kurniasari Imelda Imelda Imelda Imelda Imelda Imelda Indarasati, Nanda Ayu Ismail Ismail Ismail, Ismail Jamhari Jamhari Jayanti Putri Purwaningrum Julia Ayu Wulandari Kai-Lin Yang Karomah, Syarifatul Kartikawati, Wahyu Khoirun Nisa khusnul khotimah kiki ratnaning arimbi Kurnia Widyaningsih Laikha Sari Lenthera Mega Devya M. Fauzan Asy'ari M. Ulul Albab M. Zaenal Muttaqin MACHMUDAH, AMIROTUL Manuharawati Marpaung, Dian Wahyu Masriyah Masriyah MASRIYAH Masriyah Masriyah Masriyah Masriyah Masriyah Masriyah Masriyah Masriyah Maulida Aulia Mega Teguh Budiarto Meryansumayeka Meryansumayeka Mochammad Amirudin Moh. Hafiyusholeh Mudinillah, Adam Muh. Rizal Muhamad Alfian Efendi Muhammad Arif Fathoni muhtarom Muhtarom Muhtarom Muhtarom Murwaningsih, Wuri Indah Nabilah Kartika Sukmawati Nanda Ayu Indarasati Nanik Kurnia Sugiarti Ndayizeye, Oscar Neni Mariana Noerdiana, Azizah Firdha Nurdin Nurdin Nurul Laili Nuswantoro, Ari Wahyudi Nyimas Aisyah Oktaviana Ainun Ratnawati Oktaviana Ainun Ratnawati Oktaviana, Dwi Livia Pertiwi, Rizky Dian Pradnyo Wijayanti Puspita, Dhesta Nurdana Putra, Misel Rajasyah Hadi Putri Dwi Naryaningsih Rachma Mufidah, Latifah Nuryah Rahaju, Endah Budi Rahman, Fatchiyah Rahmatika, Ismi Ramlah Ramlah Ramlah Ramlah Ratna Sari Dewi Ria Pusvita Sari Rini Setianingsih Rita Lefrida Rooselyna Ekawati ROYHAN, MUHAMMAD Rusydah Kamilah SANDI SETIAWAN, ARI Savirra Tazkia Sendi Ramdhani Setia Putri Ayu Ramadani Setianingsih, Rini Sipayung, Tetty Natalia Siti Khabibah Siti Khoiriyah Siti Maghfirotun Amin Siti Mistima Maat Siti Munawaroh Sri Wahyuni Sugi Hartono Sugi Hartono Sugi Hartono, Sugi Suhendra Panca Wardhana Susanto, Fran Sutinah Syafiul Muzid Syamsu Alam SYAMSU ALAM Syarifatul Maf’ulah Syifa'uliyah, Syifa’uliyah Syifa’uliyah Syifa'uliyah tazkia, savirra Tri Dyah Prastiti Tri Rezeki, Irma Setiawati Tria Bitara Ucu Rahayu Ulul Azmi Uripno, Gusti Uswatun Hasanah Uzlifatul Hasanah Uzlifatul Hasanah Vania Idelia Cahyati Wahyuni, Anik Sri Wiryanto Wiryanto Wiryanto Wiryanto Wiryanto Wiryanto Wiryanto Wiwik Andriani Wiwik Andriani Wulan Puspitasari Wulandari, Hilaria Yesieka Ayu Wuri Indah Murwaningsih Yatim Riyanto Yulia Puji Astuti Yumiati Yuniati, Yesi YUSUF FUAD Zahri, Mohammad Zulnaidi, Hutkemri

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