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MUSTAMIN IDRIS
PGSD, FKIP, Universitas Tadulako
Religion Agriculture, Biological Sciences & Forestry Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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The Effectiveness of Using Quizizz as an Interactive Medium in Van Hiele Model Geometry Learning to Improve Creative Thinking Skills of Students at MTs Negeri 1 Donggala Amanda, Rifka; Idris, Mustamin; Bakri M, Bakri M; Fajriani, Fajriani
Journal of Educational Sciences Vol. 10 No. 1 (2026): Journal of Educational Sciences
Publisher : FKIP - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.10.1.p.675-687

Abstract

This study aims to determine the effectiveness of using Quizizz as an interactive learning medium in Van Hiele model geometry learning on the creative thinking skills of students at MTs Negeri 1 Donggala. This study used a quantitative approach with a quasi-experimental type and a nonequivalent control group pretest-posttest design. The research population was all eighth-grade students at MTs Negeri 1 Donggala, with a sample of 47 students consisting of two classes, selected through random sampling. The instrument used to measure creative thinking skills was a test consisting of two essay questions. The data were analyzed using prerequisite tests (normality and homogeneity tests) and hypothesis testing using an independent-sample t-test with the help of the SPSS program. The results showed that the significance value of the posttest t-test was 0.002 < 0.05, so H0 was rejected and H1 was accepted. The average posttest score of the experimental class was higher than that of the control class. Thus, it can be concluded that the use of Quizizz as an interactive learning medium in Van Hiele model geometry learning is effective in improving the creative thinking skills of students at MTs Negeri 1 Donggala.
THE EFFECTIVENESS OF THE RADEC LEARNING MODEL ON GRADE IX STUDENTS’ LEARNING OUTCOMES IN SOLID GEOMETRY Afni, Nur; Nasir, Rahma; Idris, Mustamin; Pathuddin, Pathuddin
JME (Journal of Mathematics Education) Vol 11, No 1 (2026): JME (January - June)
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v11i1.2716

Abstract

 This study aimed to examine the effectiveness of the RADEC (Read, Answer, Discuss, Explain, and Create) learning model on the learning outcomes of Grade IX students in solid geometry. The research employed a quantitative approach using a quasi-experimental design with a pretest–posttest control group. The population consisted of ninth-grade students at a junior high school in Palu, and the sample was selected using cluster random sampling. Data were collected through essay-type tests to measure students’ learning outcomes and observation sheets to assess the implementation of the learning model. Data analysis was conducted using the independent sample t-test and N-Gain analysis at a significance level of 0.05. The results showed that the Sig. (2-tailed) value was 0.001, indicating a statistically significant difference in learning outcomes between the experimental and control classes. The average N-Gain score in the experimental class was 0.56, which falls into the moderate category and is higher than that of the control class. These findings indicate that the RADEC learning model is effective in improving students’ learning outcomes in solid geometry and can serve as an alternative instructional approach in mathematics education.
Psychometric Evaluation of Culturally Responsive Numeracy and Problem-Solving Assessment: A Rasch Modeling Approach Suciati, Indah; Walanda, Daud Karel; Idris, Mustamin; Napitupulu, Mery; Anggraini, Anggraini; Lefrida, Rita; Walanda, Richard Albert
Jurnal Pendidikan MIPA Vol 27, No 1 (2026): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v27i1.pp357-382

Abstract

The quality of measurement in educational research is highly dependent on the validity and reliability of the instruments used. However, in practice, many numeracy literacy and problem-solving instruments have not undergone adequate psychometric testing, particularly those that use cultural contexts as question stimuli. This study aims to develop and evaluate instruments for numeracy literacy and problem-solving in sequences and series, grounded in cultural context/local wisdom, using a research and development approach and Rasch modeling. The instrument's content validity was assessed through expert review by learning evaluation experts, mathematics education lecturers, and cultural experts (traditional councils). The analysis was conducted using the average validator score, Aiken's V coefficient, and percentage agreement to ensure the appropriateness of the substance, clarity of language, instrument appearance, and the appropriate integration of cultural context. Empirical trials were conducted in small groups with 71 high school students in grade X with 15-17 years in three regions in Indonesia: Palu City, Donggala Regency, and Sigi Regency, who were selected purposively. The test data were analyzed using Rasch modeling to evaluate item suitability, difficulty level, reliability, separation index, unidimensionality, and potential bias through DIF analysis. The analysis results showed that the developed instrument had very high content validity, strong person and item reliability, and that most items fit the Rasch model. However, the distribution of item difficulty did not fully cover the extreme range of respondents' abilities, and indications of DIF were found in some items in one area, indicating the need for further refinement. Thus, the developed numeracy literacy and problem-solving instrument was deemed suitable based on initial findings at the development stage; however, it still requires further revision and testing before being widely used in a more diverse population. Keywords: numeracy literacy, problem-solving, rasch model, reliability, validity.
Analisis Kesalahan Siswa Menyelesaikan Soal Cerita Persamaan Linear Satu Variabel Kelas VIII SMP Negeri 5 Palu Berdasarkan Teori Newman Permatasari, Dwi; Sugita, Gandung; Idris, Mustamin; Anggraini, Anggraini
Aksioma Vol. 15 No. 1 (2026): AKSIOMA
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/aksioma.v15i1.4485

Abstract

This study aims to analyse the errors made by students in solving Linear Equation One Variable (PLSV) story problems in class VIII students of SMP Negeri 5 Palu, using Newman's theory. Newman's theory consists of five stages which include reading errors, understanding errors, transformation errors, process skill errors, and errors in writing the final answer or notation. This research used qualitative method with descriptive approach. The data collection techniques were through written tests and interviews. The research subjects consisted of three students based on the level of mathematical ability, namely high mathematical ability, medium mathematical ability, and low mathematical ability seen from the report card scores of mathematics subjects in class VII even semester. The results showed that students with high mathematics ability made reading errors, transformation errors, process skill errors, and errors in writing the final answer or notation. The students with medium mathematics ability made reading errors, comprehension errors, transformation errors, process skill errors, and errors in writing the final answer or notation. Similarly, students with low mathematics ability made reading errors, comprehension errors, transformation errors, process skills errors, and errors in writing the final answer or notation. Errors that often occur at the reading error stage are misreading the symbols in the problem, transformation errors, namely changing the problem into mathematical form, process skill errors, namely errors in counting operations, and errors in writing the final answer or notation.
Profiling students’ mathematical reasoning in the alkhairaat context using rasch analysis: A mixed-methods study Wahyuni, Dewi Sri; Tahril; Ismaimuza, Dasa; Pathuddin; Mustamin Idris; Hadi, Windia
Journal of Advanced Sciences and Mathematics Education Vol. 6 No. 1 (2026): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v6i1.1098

Abstract

Background: Students’ mathematical reasoning is often limited by their difficulty in linking abstract mathematical concepts with meaningful real-life contexts. In many classrooms, mathematics is perceived as disconnected from students’ sociocultural experiences, which can hinder the development of deeper reasoning processes. Aims: This study aims to profile students’ mathematical reasoning abilities within the Alkhairaat sociocultural context and to examine how contextual integration influences reasoning across different ability levels. Method: A sequential explanatory mixed-methods design was employed involving 33 eighth-grade students in a madrasah. Quantitative data were collected through a mathematical reasoning test embedded in the Alkhairaat context and analyzed using the Rasch measurement model (Ministep 5.10.4.0) to evaluate the instrument’s psychometric quality and map students’ reasoning abilities. Qualitative data were then obtained through clinical interviews to explore students’ cognitive processes when solving contextual problems. Results: Rasch analysis indicated acceptable psychometric properties, with item reliability of 0.67 and person reliability of 0.58. Wright Map analysis categorized students into three ability levels: high (12.12%), medium (66.67%), and low (21.21%). The findings show that the Alkhairaat context functions differently across ability levels: as a cognitive tool for abstraction among high-ability students, as procedural scaffolding for medium-ability students, and primarily as an affective anchor for low-ability students. Conclusion: Integrating sociocultural contexts such as Alkhairaat values can support mathematical reasoning by providing meaningful entry points for abstraction. However, its effectiveness depends on students’ initial proficiency, indicating the need for additional instructional support for lower-ability learners.
Co-Authors Abdul Munir Ahmad Ahmad Ahmad Ahmad Aisun, Putri Alfisyahra, Alfisyahra Amanda, Rifka Amelia, Reski Amik, Zakiah Magfiratul Andryanto Tahir Anggraini Anggraini Anggraini Anggraini Annisa Marpudin Annisa, Marsiana Dwi Arsyad Said Aryanto Aryanto Asis, Nurasia Asri Hente Babe, Agustina Baharuddin Paloloang Baharuddin Paloloang Bahraeni Bakri M Bakri M, Bakri M Bakri Mallo Busra Busra, Busra Darmiati Darmiati Dasa Ismaimuza Dasa Izmaimusah Daud Karel Walanda Dewi Sri Wahyuni, Dewi Sri Dewi, Arum Resiana DIAN APRIANI Didit Dermawan Djafar, Yuniarti H Dwi Permatasari Eka Fachri Fajriani Fajriani Fajriani Fitriani Ayuningtias Gandung Sugit Gandung Sugita Gita Destiana Hamka Haryati Ruslan Holyness Nurdin Singadimedja I Nyoman Murdiana I Nyoman Murdiana Ibni Hadjar Ibnu Hajar Ike A Budiman Indah Suarni Ira Kusnia Vani Jaeng, Maxinus Jaeng, Maxinus Kadong, Ekslesya Evangelin Karniman, Tegoeh S. Lembang, Ulvina Tangke Linawati Linawati Lumi, Jesica Lupna, Lupna Maisaroh Maisyarah Maisyarah Maisyarah Marinus Barra Tandiayuk Masruri Masruri Masruri Maxinus Jaeng Meggi Rahayu Meilando, Reksy Meinarni, Welli Meldawati Simaa Mery Napitupulu Mirnawati Mirnawati Mirnawati Muin Moh. Zain Muh Hasbi Muh. Hasbi Muh. Hasbi Muh. Rizal Muh. Rizal Muh. Rizal Muhammad Azwar Muhammad Rivai Muin, Mirnawati Nasir, Rahma Nisa, Ainun Norma Norma Norma Nur Afni Nur Awalia Nur Hayatin Nur Inayah Nur Safitri Nurhaeda Nurhaliza, Saripa Nurhayadi Nurhayadi Nurmala Nurmala Nurmasita M. Saahi Nurul Afiyah Nurul Agmita L Nurul Alfahira Nurul Hikmah Pathuddin Pildayani Pildayani, Pildayani Qitra Sandi Rahim, Nur Mei Sakin Ramadhan Asilaka Reksy Meilando RENAWATI, RENAWATI Rifai, Mohammad Rifal, Mohammad Riska Riska Riska Rita Lefrida Rizal, Muh Rizal, Muh Rohmah, Zakiah Ropang, Marlita Rosyidah, Anni Syakhiyatur Ruslan, Haryati Sali, Elisabet SANDY SAPUTRA Sari, Triana Meida SATRIYAS ILYAS SITTI ZAHRA Sri Mastuti Suarni, Indah Suciati, Indah Sukayasa Sutji Rochaminah Tahir, Andryanto Tahril Teguh Purnomo Teguh Purnomo, Teguh Triana Meida Sari Vani, Ira Kusnia Walanda, Richard Albert Welli Meinarni Widiastuti, Ira Windia Hadi, Windia Yuni Rahma Tanti Yuyun Selasti Zain, Moh. Zakiah Rohmah Zidan H.L, Moh. Zuhaina