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All Journal Jurnal Kependidikan: Penelitian Inovasi Pembelajaran Psikoislamika : Jurnal Psikologi dan Psikologi Islam Paradikma: Jurnal Pendidikan Matematika TABULARASA Persona: Jurnal Psikologi Indonesia AKSIOMA: Jurnal Program Studi Pendidikan Matematika Delta-Pi : Jurnal Matematika dan Pendidikan Matematika Indigenous: Jurnal Ilmiah Psikologi Al-Jabar : Jurnal Pendidikan Matematika PRISMA EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA JTAM (Jurnal Teori dan Aplikasi Matematika) FENOMENA MATEMATIKA DAN PEMBELAJARAN GUIDENA: Jurnal Ilmu Pendidikan, Psikologi, Bimbingan dan Konseling JURNAL PENDIDIKAN TAMBUSAI JURNAL FARMASIMED (JFM) Jurnal Perspektif M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Jurnal Ilmiah Psyche PHI: Jurnal Pendidikan Matematika Jurnal Ilmiah Profesi Pendidikan Psikosains: Jurnal Penelitian dan Pemikiran Psikologi Range : Jurnal Pendidikan Matematika Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Mosharafa: Jurnal Pendidikan Matematika Jurnal Ilmiah Wahana Pendidikan Humantech : Jurnal Ilmiah Multidisiplin Indonesia Healthy Tadulako Journal (Jurnal Kesehatan Tadulako) Jurnal MathEducation Nusantara Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram International Journal of Trends in Mathematics Education Research (IJTMER) Jurnal Pendidikan Progresif JIWA:Jurnal Psikologi Indonesia Prismatika: Jurnal Pendidikan dan Riset Matematika
Sahat Saragih
Pusat Penelitian Kebijakan Pendidikan dan Kebudayaan, Balitbang Kemendikbud
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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Measuring Changes of Students’ Statistical Reasoning Taught by Ethnomathematics Approach Assisted TinkerPlots: A Stacking Analysis Study Ramadhani, Rahmi; Saragih, Sahat; Maulida, Rizki; Simanjuntak, Sinta Makito Br
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 6, No 3 (2022): July
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v6i3.8375

Abstract

This study aims to use the Rasch model stacking analysis technique to assess students' statistical reasoning abilities in descriptive statistics learning utilizing a TinkerPlots-assisted ethnomathematics approach in Nias cultural environment. This research is a quasi-experimental study that uses pre-and post-test control group designs. The stacking technique is used to examine how students' statistical reasoning abilities change in the presence of the intervention. The sample for this study is students in the 12th year at Gunungsitoli High School in the Nias Islands, Sumatera Utara region. Students are administered an exam that consists of five essay questions. Their responses are evaluated using a rubric that incorporates diagnostic criteria and a response certainty index. The data is analyzed using the Rasch Partial Credit Model with WINTSTEPS 4.5.5. The results indicate that students in the experimental group improved their statistical reasoning abilities more than students in the control group when they used TinkerPlots-assisted ethnomathematics in Nias cultural environment (the group with an ordinary learning approach). Along with the intervention, it is discovered that changes in student learning capacities are achievable in some situations due to pupils receiving the correct response or cheating. In other circumstances, pupils who undergo negative changes may respond inappropriately due to carelessness, boredom, or misconceptions. Additionally, these findings demonstrate that some children provide correct responses following intervention on certain items. According to the findings of this study, stacking analysis approaches are critical for describing each change in student abilities as a result of each person and each item. 
IDENTIFYING CRITICAL THINKING ABILITIES TO SOLVE MATHEMATICAL LITERACY PROBLEMS INTEGRATED WITH MALAY CULTURE IN JUNIOR HIGH SCHOOL STUDENTS: A STUDY ON PROBLEM-BASED LEARNING IN GEOMETRY TRANSFORMATION CONTEXT Fadilah, Nina; Saragih, Sahat
MATEMATIKA DAN PEMBELAJARAN Vol. 13 No. 2 (2025): MATEMATIKA DAN PEMBELAJARAN
Publisher : IAIN Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/mp.v13i2.11651

Abstract

This research aims to review the critical thinking skills of Junior High School (SMP) students in solving mathematics literacy problems integrated with Malay culture. Critical thinking skills are an important aspect of mathematics education because they train students to analyze, evaluate, and solve contextual problems logically and reflectively. The integration of Malay culture in mathematics literacy questions is intended to enhance the relevance of the problem context to students' lives and strengthen local cultural identity. This study uses a descriptive qualitative approach with subjects being eighth-grade students at one of the junior high schools located in the Malay cultural area. Data were obtained through a Malay culture-based mathematical literacy test and semi-structured interviews. The analysis results show that most students are able to identify important information from the questions, but still have difficulty in deeply connecting mathematical concepts with cultural contexts and in drawing logical conclusions. These findings highlight the importance of developing contextual and culturally-based literacy questions as a means to enhance students' critical thinking skills in mathematics education.
Penerapan Model Pembelajaran Berbasis Masalah (PBM) untuk Meningkatkan Pemahaman Konsep Matematika pada Siswa Kelas VIII SMP Negeri 39 Medan Fadhilla, Alya; Saragih, Sahat
Jurnal Ilmiah Profesi Pendidikan Vol. 11 No. 2 (2026): Mei (on progress)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jipp.v11i2.4822

Abstract

Penelitian ini bertujuan untuk meningkatkan pemahaman konsep matematis siswa melalui penerapan model Pembelajaran Berbasis Masalah (PBM) serta mendeskripsikan proses jawaban siswa dalam menyelesaikan masalah matematika. Penelitian ini merupakan penelitian tindakan kelas (PTK) yang dilaksanakan dalam dua siklus. Subjek penelitian adalah siswa kelas VIII-4 UPT SMP Negeri 39 Medan yang berjumlah 29 siswa. Teknik pengumpulan data meliputi tes, observasi, dan dokumentasi. Instrumen yang digunakan berupa tes pemahaman konsep matematis dan lembar observasi aktivitas guru serta siswa. Analisis data dilakukan secara kuantitatif dan kualitatif melalui reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa penerapan model PBM dapat meningkatkan pemahaman konsep matematis siswa. Nilai rata-rata siswa meningkat dari 34,48 pada tes awal menjadi 47,76 pada siklus I, dan meningkat menjadi 83,62 pada siklus II. Ketuntasan klasikal mencapai 89,66% pada siklus II. Nilai N-Gain meningkat dari kategori rendah menjadi kategori sedang. Selain itu, proses penyelesaian soal siswa mengalami perbaikan yang ditandai dengan kemampuan memahami masalah, menyusun model matematika, dan menyelesaikan soal secara sistematis. Dengan demikian, model Pembelajaran Berbasis Masalah atau Problem Based Learning efektif dalam meningkatkan pemahaman konsep matematis siswa.
DEVELOPMENT OF DIGITAL BOOK LEARNING MEDIA FOR MATHEMATICS USING DIGITAL LITERACY-BASED CORPORATE FLIP PDF Saputri, Lilis; Saragih, Sahat; Napitupulu, Elvis
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 15, No 1 (2026)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/ajpm.v15i1.11372

Abstract

Specifically, it examines (1) the feasibility of using these digital books and (2) their practicality digital books in a real classroom setting. The research follows Plomp's development model, which includes three stages: initial investigation, development or prototyping, and assessment. The study focuses on class X students at SMK Taman Siswa Binjai. To gather data, questionnaires were distributed to media and material experts to evaluate the feasibility of the digital book learning media. Additionally, student response questionnaires were used to assess the practicality of these digital books. The data analysis examined the validity and practicality of the digital book learning media created with Flip PDF Corporate, based on digital literacy. The findings reveal that the developed digital book learning media is highly feasible, with an impressive feasibility score of 98%. Moreover, the practicality assessment showed that students found the digital book products very practical, with a high approval rating of 94.72%. Future research should consider conducting longitudinal studies to evaluate the long-term effects of using digital book learning media on students' knowledge retention, critical thinking skills, and motivation. This research provides valuable insights into the sustainability and effectiveness of digital learning media.
PENERAPAN MODEL PEMBELAJARAN INQUIRY DALAM MENINGKATKAN KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA Sitorus, Nurhanifah; Saragih, Sahat
Prismatika: Jurnal Pendidikan dan Riset Matematika Vol. 8 No. 2 (2026): Prismatika: Jurnal Pendidikan dan Riset Matematika
Publisher : Universitas Insan Budi Utomo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33503/prismatika.v8i2.2379

Abstract

This study aimed to improve students’ mathematical creative thinking skills through the implementation of the inquiry learning model. The study employed Classroom Action Research (CAR) conducted in two cycles involving 32 students of class VII-2 at SMP Negeri 2 Pancur Batu. Each cycle consisted of planning, action, observation, and reflection stages. The actions were carried out through inquiry steps, including problem orientation, problem formulation, hypothesis generation, data collection, hypothesis testing, and conclusion drawing. The instruments used were essay tests on mathematical creative thinking and observation sheets. The results showed a consistent improvement in students’ creative thinking skills, indicated by the increase in the average score from 32.38 in the pre-test to 62.50 in cycle I and 87.89 in cycle II, as well as classical mastery improvement from 3.12% to 90.62%. Improvements were also observed in all indicators, namely fluency, flexibility, originality, and elaboration. These findings indicate that the inquiry learning model is effective in enhancing students’ mathematical creative thinking skills and promoting active engagement in learning.  
Co-Authors Akbar, Putri Indah Nuriya Ali Audah Amin Fauzi, Kms. Mhd. Angela, Dinda Anggraini, Rafidah Dwi anim anim Anjar Tri Wibowo Anjarsari, Ayudya Armadi, Amaraditha Oktovia Ayu, Lestari Az-Zahra, Dzakirahsalwa Baehaqi Baihaqi Siddik Lubis Bornok Sinaga Br Marpaung, Apriyanti Kristina Bukhori, Bukhori Ceriputri, Wulan Kusumaning Ayu Chaerul Y, Ricky Damanik, Tamara Dwi Abnita Br Devianti, Chelsea Sandy Dian Armanto E Elvis Napitupulu E. Elvis Napitupulu, E. Elvis Edi Syahputra Eko April Ariyanto, Eko April Elvis Napitupulu, Elvis Fadhilla, Alya Fadilah, Nina Faudhiki Yusuf, Arrozi Hiban Febrianti, Shinta Adi Fenanlampir, Anike Friska Ledina Situngkir Grace, Kristina Haque, Sayidah Aulia'ul Hasni Suciawati Hasratuddin Hasratuddin Siregar Hatta , Iha Haryani Hidayatullah, Rizki Maulana Hilliyani, Hilliyani Husnol Khatimah, Sofia Diana hutabarat, yosevin angelina I. V, Vione Sal Sabilla Igaa Noviekayati, Igaa Indana, Finanin Nur Ismail Hanif Batubara Israil Sitepu Israq Maharani Jelang Hardika Khairani, Nerli Laksono Trisnantoro Lestari, Anisa Indah Mazlan, Mazlan Miftahul Jannah Moch Zainal Arifin, Moch Zainal Mu'awiyah, Indriyani Mulyono Mulyono Murtadha, Ricky Nailul Himmi Hasibuan, Nailul Himmi Napitupulu, E.E Napitupulu, E.Elvis Natallya, Dessy Fitry Nilam Sari Noorwindhi Kartika Dewi, Noorwindhi Kartika Noviekayati, IGAA. Nugraha, Estrite Abigael Ruthe Angel Nur Rahmi Rizqi Nurhasanah Siregar . Panjaitan, Sutrisna Ernawaty Pohan, Dasrin Prasetyo, Yanto Purbandhini, Citra Galuh Putra, Alvian Puja Permana Putra, Gunawan Satria Putri Andini, Putri Putriyogatama, Maria Shevanda Shevanda Christiani R, Hesty Utami Rahim, Rani Rahmi Ramadhani RAKIYAH, SITI Ratih Wahyu Saputri Ristiani, Rima Fuji Rizki Maulida, Rizki Rosstiana, Meicha Lady Rr Amanda Pasca Rini, Rr Amanda Pasca Saputra, Egy Oktadrian Saputri, Lilis Setyowati S, Ninda Widya Sholihah, Nurul Hidayatus Simamora, Elmanani Simanjuntak, Sinta Dameria Simanjuntak, Sinta Makito Br Sinta Dewi, Fitri Yuliana Siregar, R.Maisaroh Rezyekiyah Siswahyudianto Sitanggang, Mariani Siti Maysarah Sitorus, Nurhanifah Sondang Noverica SUKAMTI . Suroso Suroso Suryadiningrum, Belva Artanti Susandi, Aidil Tiosagi Clara Sinaga, Hanna Umar, Nurul Mahmudah Umar, Nurul Mahmudah Utami R, Hesty wahyuni wahyuni Winarsih ., Winarsih Y, Ricky Chaerul Yoniar, Yosefia Putri Yuerita Sarumaha, Yuerita Sarumaha Yusi Anggriani Zaiyar, M Zamirah, Dilly Merdekawati