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Turmudi

Universitas Pendidikan Indonesia, Bandung

Author-ID : 406928

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Students’ Creative Thinking in Semi-Complex Contexts: A Study of Mathematical Problem Construction Aji, Rohmat Akbar; Nisa’, Rizqita ‘alimatun; Turmudi; Susanti, Elly
Journal of Educational Management Research Vol. 5 No. 3 (2026)
Publisher : Al-Qalam Institue

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61987/jemr.v5i3.1687

This study aims to describe the creative thinking abilities of students in the semi-complex category when posing mathematical problems, focusing on fluency, flexibility, originality, and elaboration. The research employed a descriptive qualitative approach involving Madrasah Aliyah students selected based on a creative thinking ability test. Data were collected through problem-posing tasks and semi-structured interviews to explore students’ thought processes in depth. The findings reveal that students are able to generate several mathematical problems with varied structures and contexts, particularly demonstrating fluency and flexibility; however, they remain limited in terms of originality and depth of elaboration. The implications of this study highlight the need for instructional strategies that encourage deeper idea exploration, the use of open-ended stimuli, and reflective guidance to enhance students’ creative thinking quality in mathematical problem posing. Additionally, continuous practice and supportive learning environments that promote collaboration, discussion, and real-world contexts are essential to foster more original ideas and richer elaboration, contributing to meaningful improvement in mathematics learning at the secondary education level.

Penerapan F-AHP dan MOORA dengan Matriks Terbobot dalam Menentukan Prioritas Kebutuhan Tenaga Kesehatan Dewi, Adellia Fitria Marta; Turmudi, Turmudi; Nashichuddin, Achmad
Jurnal Riset Mahasiswa Matematika Vol 5, No 4 (2026): Jurnal Riset Mahasiswa Matematika
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v5i4.42222

Penelitian ini menerapkan Fuzzy Analytic Hierarchy Process (F-AHP) dan Multi Objective Optimization on the Basis of Ratio Analysis (MOORA) untuk menentukan prioritas kebutuhan tenaga kesehatan pada 20 negara di wilayah Eropa dan Asia Tengah. Enam kriteria digunakan, yaitu jumlah dokter, perawat, bidan, dokter gigi, tenaga farmasi, dan luas daratan. Data diperoleh dari World Health Organization (WHO) dan Worldometer. Metode F-AHP digunakan untuk menentukan bobot kriteria melalui matriks perbandingan berpasangan berbasis Triangular Fuzzy Number (TFN), sedangkan MOORA digunakan untuk menghitung nilai preferensi dan peringkat alternatif melalui matriks terbobot. Hasil F-AHP menunjukkan bahwa jumlah dokter memiliki bobot tertinggi, diikuti jumlah perawat, bidan, dokter gigi, tenaga farmasi, dan luas daratan. Hasil MOORA menunjukkan bahwa San Marino, Andorra, dan Montenegro menjadi tiga alternatif dengan prioritas tertinggi. Temuan ini menunjukkan bahwa integrasi F-AHP dan MOORA dapat menghasilkan proses pemeringkatan yang sistematis dan terukur. Namun, interpretasi hasil tetap perlu mempertimbangkan bahwa data yang digunakan bersifat absolut dan belum memperhitungkan rasio tenaga kesehatan terhadap jumlah penduduk.

Geometry Learning through Extended Reality (XR): A Mini Review of Its Impacts, Implementation Challenges, and Future Developments Hasanah, Nur Riski; Turmudi, Turmudi; Juandi, Dadang
Indonesian Journal of Education and Mathematical Science Vol 7, No 2 (2026)
Publisher : Universitas Muhammadiyah Sumatera Utara (UMSU)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/ijems.v7i2.29380

Extended Reality (XR) which includes AR, VR, MR, has become one of the important innovations in the development of mathematics learning media, especially in the field of geometry. This review aims to analyze the impact, implementation challenges, and future development directions of XR in geometry learning. A PRISMA-based systematic review was conducted with thematic analysis of literature from reputable international journals. The results of the study show that XR improves the effectiveness of learning and spatial thinking skills, student engagement, and learning motivation through interactive visualization and immersive learning experiences. However, negative impacts that need to be considered, include the dependence on technology, physiological and cognitive disorders, and heightened distraction that affects performance. Implementation challenges include limited infrastructure, teacher readiness, device access, costs, appropriate pedagogical design, and curriculum support for optimal XR integration. Future developments suggest that XR holds strong transformative potential through integration with artificial intelligence (AI), adaptive learning systems, and educational metaverse environments. This study highlights the need for structured XR integration strategies and further research on long-term effectiveness and appropriate XR-based pedagogical design in mathematics learning, particularly geometry.

ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL COMPARE AND EXCHANGE PADA BUKU MATHEMATICS IN CONTEXT Susilowaty, Nora; Jupri, Al; Turmudi, Turmudi
EDU-MAT: Jurnal Pendidikan Matematika Vol 14, No 1 (2026)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/edumat.v14i1.24968

Penelitian ini bertujuan untuk mendeskripsikan jenis-jenis kesalahan dan faktor penyebab siswa melakukan kesalahan dalam menyelesaikan soal Compare and Exchange pada buku Mathematics in Context (MiC) menggunakan kerangka Analisis Kesalahan Newman. Penelitian menggunakan pendekatan deskriptif kualitatif dengan subjek 17 siswa kelas VI. Data diperoleh melalui hasil jawaban siswa pada soal Compare and Exchange yang diadaptasi dari MiC dan wawancara pada 3 subjek yang dipilih berdasarkan variasi kesalahannya. Hasil penelitian menunjukkan bahwa kesalahan yang paling dominan adalah kesalahan transformasi, dengan persentase mencapai 87,5% hingga 93,75% pada soal nomor 2 hingga 4. Kesalahan memahami masalah meningkat seiring dengan kompleksitas soal, terutama pada soal yang melibatkan lebih dari satu informasi dan hubungan tidak langsung. Selain itu, kesalahan keterampilan proses dan kesalahan penulisan jawaban juga ditemukan secara signifikan, meskipun beberapa siswa mampu memberikan jawaban akhir yang benar. Hasil wawancara mengungkap bahwa siswa cenderung mengandalkan intuisi, pengalaman sebelumnya, dan representasi visual tanpa menuliskan proses berpikir matematis secara eksplisit. Temuan ini menyimpulkan bahwa jawaban benar tidak selalu mencerminkan proses berpikir matematis yang benar dan lengkap. Oleh karena itu, pembelajaran matematika perlu menekankan pemahaman masalah, pemodelan matematika, dan komunikasi matematis agar siswa mampu menyelesaikan soal kontekstual secara sistematis dan bermakna. Kata kunci: Jenis Kesalahan, Soal Compare and Exchange, Book of Mathematics In Context Abstract: This study aims to describe the types of errors and the factors contributing to students’ errors in solving Compare and Exchange problems from the Mathematics in Context (MiC) textbook using the Newman Error Analysis framework. The study employed a qualitative descriptive approach involving 17 sixth-grade students as research participants. Data were collected from students’ written responses to Compare and Exchange problems adapted from MiC and from interviews with three selected students based on variations in the types of errors identified. The results indicate that transformation errors were the most dominant type, with percentages ranging from 87.5% to 93.75% on items 2 through 4. Errors in understanding the problem increased with the level of task complexity, particularly in problems involving multiple pieces of information and indirect relationships. In addition, process skill errors and answer presentation errors were also found to be significant, although some students were able to produce correct final answers. Interview findings reveal that students tended to rely on intuition, prior experience, and visual representations without explicitly articulating their mathematical reasoning processes. These findings suggest that correct answers do not necessarily reflect correct and complete mathematical thinking processes. Therefore, mathematics instruction should place greater emphasis on problem comprehension, mathematical modeling, and mathematical communication to enable students to solve contextual problems systematically and meaningfully.. Keywords: Types of Errors, Test of Compare and exchange, Book of Mathematics in Context

HIGH AWARENESS, LOW SCORES: UNVEILING THE CONTRADICTION BETWEEN METACOGNITIVE REFLECTION AND WRITTEN MATHEMATICS TEST PERFORMANCE Hasanah, Nur Riski; Turmudi, Turmudi; Juandi, Dadang
EDU-MAT: Jurnal Pendidikan Matematika Vol 14, No 1 (2026)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/edumat.v14i1.23913

This study aims to describe students’ levels of metacognitive reflection and their written test performance in mathematics learning, as well as to analyze the relationship between the two. The study employed a mixed-method approach with a descriptive–correlational design involving 24 seventh-grade junior high school students selected through purposive sampling. Data were collected using a 10-item metacognitive reflection questionnaire (4-point Likert scale) and a written mathematics test consisting of two open-ended questions. The questionnaire demonstrated acceptable reliability (Cronbach’s Alpha = 0.768). Descriptive analysis indicated that most students were categorized at moderate to high levels of metacognitive reflection. However, Pearson correlation analysis revealed no significant relationship between metacognitive reflection and written test performance (r = −0.152, p = 0.479). These findings suggest that students reported metacognitive reflection does not necessarily correspond to their performance on written mathematical tasks. The results highlight the need for further investigation using multiple data sources to better understand the relationship between metacognitive reflection and mathematical performance. Keywords: Metacognitive Reflection, Written Test, Mathematics Learning, Academic Performance, Awareness

Co-Authors A, Abdul Wahab Aan Subhan P Abdul Fatah Abdul Latip Abdul Latip Abdul Wahab A Abdussakir Abdussakir Ach. Nashichuddin Adawia, Aida Adirakasiwi, Alpha Galih Afgani Dahlan, Jarnawi Agus Muharram Agus Mukti Wibowo Agusfianuddin Agusfianuddin Agusfianuddin, Agusfianuddin Ahmad Arifuddin Ahmad Dzulfikar Ahmad Dzulfikar Ahmad Rizal Jalaludin Ahmad Rizal Jalaludin Aji, Rohmat Akbar Al Jupri Al Jupri, Al Jupri Alfaridzi, Tegar Alman alman Ambar Gini Permatasari Ambar Gini Permatasari Amelia Defrianti Putri Andhin Dyas Fitriani Andini Dwi Rachamwati Aneu Pebrianti Anggi Lestari Purnama Ani Rosidah Anwar Aprianto Abdurahman Aras, Irianto Arie Dharmawan Arie Dharmawan Arifin Riadi Armeyntan, Tata Sutrafia Asep Safaat Asep Syarif Hidayat Asep Syarif Hidayatullah Asnawi, Muhammad Hasan Aufia, Zulfatul Aya Shofia Maulida Ayunda Sri Wahyuningrum Azhari, Mohamed Nor Azhari Azman Badrus, Badrus Bambang Avip Priatna Martadiputra cakrawala Bambang Hero Saharjo Baskoro, Jarot Aji Belinda Terlouw Boedi Tjahjono Buhaerah Buhaerah Buhaerah Buhaerah, Buhaerah Cahya Karisma Pertiwi Cahya Karisma Pertiwi Cahyanti, Niken Dwi Dadan Dasari Dadan Rahmat Dadan Rusdiana Saputra Dadan Rusdiana Saputra Dadang Juandi Dadang Juandi Dadang Juandi, Dadang Juandi Darhim Darhim Dasim Budimansyah Dasim Budimansyah Dasim Budimansyah, Prayoga Bestari, Redi Yamanto, Dasim Budimansyah, Deby Ifevayona Ginting Devi Afriyuni Yonanda Dewi, Adellia Fitria Marta Dewi, Rivani Adistia Dian Nopiyani Dian Robiatussa’diyah Diana, Nana Didi Suhaedi Didi Suryadi Didi Suryadi Didi Suryadi Dinantika, Tutus Dini Febriani Diski Novianda Diya, Hakimatul Maulidiyah Dudu Suhandi Saputra E. Nurlaelah Edi Irawan Edi Irawan Edi Supriyadi Ejen Jenal Mutaqin Ekasatya Aldila Afriansyah Elah Nurlaelah Elah Nurlaelah Elly Susanti Elmawati, Elmawati Elvandri Yogi Pratama Endang Mulyana Ernawati Ernawulan Syaodih Esti Harini Evawati Alisah Fadhil Zil Ikram Fardian, Dilham Farida Daniel Febriandi, Riduan Febriandi Febriani, Winarti Dwi Ferlia Putri Rahmania Firda Fauziah Fita Nur Fitriana Fitria Sulistyowati Fitriyani, Harina Freddy Prasetyo Fuadiah, Nyiayu Fahriza Fuji Azzumar Gee, Efrata Gita Yulia Dewi H N Fitriani Haerani, Agus Hafiziani Eka Putri, Hafiziani Eka Hamdan Sugilar Hani Nurhasanah Hania Rahmah Harina Fitriyani Haryanti, Yuyun Dwi Hasanah, Nur Riski Hasti Robiasih Hastri Rosiyanti, Hastri Hayani Wulandari, Hayani Hayatun Nufus Hendrayati, Wida Sri Hendriyanto, Agus Herli Salim Herman, Tatang Hesty Marwani Siregar Hetty Patmawati Hidayat, Abas Huda, Nur Fuad Kholiqul Hudali, Ahmad Idat Muqodas Ika Fitri Apriani Ilham Muhammad Imam Sujarwo Indra Suhendra Indriati, Mefa Inggrid Marlissa Intan Nurunnahar Irmadi Nahib Ismail, Mochamad Tubagus Isnawan, Muhamad Galang Italyani Nurhaifa Jaka Suryanta Jamhari Jamhari Jannah, Shahnaz Latifatul Jarnawi Afgani Dahlan Jarnawi Afgani Dahlan Joko Rizkie Widokarti Jozua Sabandar Jozua Sabandar Juhari Juhari, Juhari Kartika Yulianti Kasmad, Mamad Khabibur Rohman Khoiroh, Ihda Umdatul Khusnul Novianingsih Kisno Kurino, Yeni Dwi Kurnia Putri Sepdikasari Dirgantoro Kusnandi Kusnandi Kusnandi Kusnandi Kusnandi, Kusnandi Kusuma, Yaya S Lilik Ariyanto LILIK BUDIPRASETYO Lucky Heriyanti Jufri, Lucky Heriyanti Lucy Dewan Yulianto Maarten Dolk Maarten Dolk, Maarten Magdalena Wangge Maghfiroh, Jamilatul Mahmudin Mahmudin Marasabessy, Rosida Marchy, Febrinna Marfuah Margaretha Madha Melissa Maulida, Aya Shofia Mawaddah Hamzah, Andi Mega Nur Prabawati Mega Nur Prabawati Mega Nur Prabawati, Mega Nur Meliala, Janita S Mhmd. Habibi MICHIEL DOORMAN, MICHIEL Minasyan, Sona Mohammad Nadzir Azhari Mohammad Nafie Jauhari Mubiar Agustin Muchsin, Sitti Busyrah Mufliva, Rosiana Muhamad Syahidul Qirom Muhammad Khudzaifah Muhammad Rifqi Mahmud Muhammad Tareq Ghifari Muhammad Tareq Ghifari Muhammad Zaki Muhammad, Iryana Mulyani, Andini Endah Sri mulyanti, Yanti Mulyanti Mustadin Mustadin Mutiara Arlisyah Putri Utami N Hidayah N. Nurjanah Nana Diana Nana Diana Nana Diana Nanang Priatna Naser, Abdurrahman do muhamad Nashiha, Maslahatun Naufal Ishartono Nazla Nurul Aulia Panggabean Nazla Nurul Aulia Panggabean Nelma Dortje Lethulur Neza Zakiya Arili Nia Fatmawati Nike Astiswijaya Nilah Karnilah Nineu Erwinda Agustin Nisa’, Rizqita ‘alimatun Nisful Laila Nopiyani, Dian Nopiyani, Dian Nora Susilowaty Nunung Nurjanah Nur Anisa Fitri Hasan Nur Riski Hasanah Nurafni Nurdiansyah, Rikrik Nurhasanah Nurhasanah Nuur Wachid Abdul Majid Oktriyanti, Dea Iintri Panjaitan, M. Azhari Pieter Zakarias Tupamahu Pramartha, I Nyoman Bagus Pratiwi, Inne Marthyane Prida N. L. Taneo Puji Rahayu Puri Pramudiani Puri Pramudiani Purnamasari, Sinta Putri, Amelia Defrianti Qirom, Muhamad Syahidul Raden Nabilah Fahrani Radjak, Dwi Setiawati Rafi' Addani, Aisyah Rahmah, Hania Rahmat Riyadi, Arie Ramadhan Kurnia Habibie Rani Sugiarni Ratni Purwasih Ratni Purwasih Ratni Purwasih, Ratni Reza, Hazim Saputra Filia Ria Novia Agus Rifqi Hidayat, Rifqi Riki Andriatna Rina Indriani Rina Indriani Rina Oktaviyanthi Riska Nurhasanah Riska Nurhasanah Ritmayanti, Indah Rahmania Rivani Adistia Dewi Riza Fatimah Zahrah Rizki Amalia Roesdiana, Lessa Rohati Rohati Rohimah, Siti Maryam Rokhmah, Ummi Nur Rolina Amriyanti Ferita, Rolina Amriyanti Rusdian Rifai S Prabawanto Saiman Saiman Sandi Budi Iriawan Saputri, Veni Sari Herlina Selvi Amelia Rahmawati, Rr. shidieq, faris majdie Sinta Purnamasari Sinta Purnamasari, Sinta Siswahyudianto Siti Fatimah Siti Nur Fadlilah Somchai Watcharapunyawong Sona Minasyan Sovana Dwi Lestari Sri Adi Widodo Sri Adi Widodo Sri Harini Sri Lestari Munajati, Sri Lestari Stanley Pandu Dewanto Sufyani Prabawanto, Sufyani suhandri, suhandri Suhendra Suhendra Suhendra Suhendra Suhendra, S SUMADI SUMADI Sumanang Muhtar Gozali Sunata Sunata Supandi Suparman Suparman Suparman Suparman Supiarmo, M. Gunawan Supriatna, Irfan Supriatna, Tatang Surya, Yohanes Suryadi Suryadi Sutomo, Woro Anglia Banda Sutoyo, Edi Swasti Maharani, Swasti Syafitri, Yoesrina Novia Vini Syaiful . Syaiful Syaiful Tatang Herman tatang Herman Tatang Herman, Tatang Terlouw, Belinda Tia Purniati Trian Pamungkas Alamsyah Trisna Roy Pradipta, Trisna Roy Ulfa, Nadia Unaenah, Een Utami, Lianni Gustia Vidanisa Nurkhotimah W Wahyudin Wafiyah, Amiroh Nur Wahab, Dewi Anita Silvina Wahyu Henky Irawan Wahyu Sopandi Wahyudin Wahyudin Wahyudin Wahyudin Wangge, Magdalena wawan kusmawan Widayanti Widayanti Widya Kusumaningsih Widya Kusumaningsih Wijaksana, Aris Hadiyan Wildan Hakim, Wildan Wina Mustikaati Wisnu Zakaria Yani Supriani Yanti Mulyanti Yanuari, Nuke Fitri Yasing, Hakimee Yati Anggraeni Yatin Suwarno, Yatin Yaya Kusumah Yaya S Kusuma Yaya S. Kusumah Yaya Sukjaya Kusuma Yaya Sukjaya Kusumah Yeni dwi Kurino Yeni Dwi Kurino Yeni dwi Kurino Yullys Helsa Yuni, Yatha Zakiya Aulia Ilma

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