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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.
Analisis Kesalahan Siswa Kelas VIII A SMP Negeri 1 Sindue Tombusabora pada Hasil Ulangan Harian Materi Prisa Safril, Safril; Sugita, Gandung; Pathuddin, Pathuddin; Murdiana, I Nyoman
Aksioma Vol. 15 No. 1 (2026): AKSIOMA
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/aksioma.v15i1.4478

Abstract

Tujuan dari penelitian ini yaitu untuk mendeskripsikan kesalahan yang dilakukan oleh siswa kelas VIII A SMP Negeri 1 Sindue Tombusabora, tahun ajaran 2024/2025 pada hasil ulangan harian materi prisma. Jenis penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif. Subjek penelitian ini adalah 2 siswa kelas VIII A SMP Negeri 1 Sindue Tombusabora. Dua orang siswa yang dipilih sebagai subjek penelitian terdiri dari dua orang siswa yang memiliki nilai paling rendah. Teknik pengumpulan data yang digunakan adalah dokumentasi hasil ulangan harian dan wawancara. Hasil penelitian ini menunjukkan kesalahan-kesalahan yang dilakukan siswa berdasarkan tahapan Kastolan: (1) Kesalahan Konseptual, Subjek TA dan RI tidak memahami soal dengan baik dan tidak memilih rumus dengan benar. (2) Kesalahan Prosedural, Subjek TA dan RI ditandai dengan ketidaksesuaian langkah-langkah penyelesaian soal dan salah dalam menentukan langkah-langkah penyelesaian soal dikarenakan kesalahan dalam memilih rumus. (3) Kesalahan Teknik, Subjek TA dan RI salah dalam operasi hitung, salah dalam menentukan jawban akhir atau tidak menentukan jawaban akhir. Kata kunci: Analisis Kesalahan,Ulangan Harian Prisma segitiga, Tahapan Kastolan.
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 Abd Hamid Abd. Hamid Afadil Ahiruddin Ain, Nur' Alfirna Alfisyahra Alfisyahra Alfisyahra Alfisyahra Alfisyahra Alfisyahra Alfisyahra, Alfisyahra Alfisyhara, Alfisyhara Almahdali , Muh Ikbal Amelia, Kadek Devy Amelia, Risna Anang Wahid M.Diah Anggraini Anggraini Anggraini Anggraini Anugrah, Aldi Ardiansyah, Randy Asnur Ali Aswandi Aswandi Baharuddin Hamzah Baharuddin Paloloang Baharuddin Paloloang Baharuddin Paloloang Bakri Bakri Bakri Bakri Bakri Mallo Besse Nur Anisa Borosi, Miranda Adhitya Dasa Ismaimuza Datuanggoa, Jeniati Desak Ketut Permatasari Desrin Lebagi Desti Desti Desti, Desti Dewi Satria Ahmar Dewi Sri Wahyuni, Dewi Sri Dewi Ulfiana Dyah Permata Esa Kurniawan Evie Awuy Evie Awuy Evie Awuy Fajriani Fajriani Fajriani Fajriani Fani, Sri Fatmawati Fatmawati Galu Parwati Gandung Sugita Greskensia, NI Made Vemi HB, Usman Hermin, Arwini Puspita Holyness Nurdin Singadimedja I Luh Restini I Nyoman Murdiana I Nyoman Murdiana I Wayan Sudarsana Ibni Hadjar Ika Citra Pratiwi Indriana Indriana, Indriana Intan Purnama Marzuki Kanarasi, Yabes Maxrobin Kelengi, Fadlun Wahyuni Khasanah, Tri Nur lawaty, susy Linawati Linawati Linawati Linawati Lumi, Jesica Lusiana Lusiana M, Bakri Ma'abud, Yusril Y Mainarni, Welli Martina Martina Maryam Maryam Maxinus Jaeng Meinarni, Welli Meliasari, Cindy Moh. Fadhel Rumi Moh. Habil S. Saleh Muazin, Muhammad Mubarik Mubarik Mubarik Muh. Hasbi Muh. Hasbi Muh. Rizal Muh. Rizal Muhammad Muazin mukarramah MUSTAMIN IDRIS Nasir, Rahma Ningrum, Ing Diar Maswal Nita Nita Nugroho Alfarizi Nur Adila Apriani Nur Afni Nur Hidayah Nur Intan Nur Padila Susanti Nurhayadi Nurhayadi Nurhikma, Nurhikma Nursupiamin Nursupiamin, Nursupiamin Nurul Alfahira NURUL AZIZAH Pembeu, Mega Cendrakasih Permata, Dyah Purnama Ningsih Purwanindina, Atila Maheswari Dewi Putri, Cindy Ade Putri, Istifanah Maharani Qomaria, Esti Rabiyatul Adawiyah Rahma Nasir Rahma Nasir Rahmadiani Rahmadiani Rahmawat, Sitti Ratna Dwi Oktavia Restini, I Luh Rita Lefrida Romu, Siti Nur Janah T.H. Rumi, Moh. Fadhel Sabila B, Dini Nurul Safril Safril Sakinah Sakinah Santika, Putu Setiawaty, Puji Wahyu Sindi Geby Sintia Sinta, Selviana Siti Uswatun Hasanah Sitti Nurhaliza Sitti Rahmawati Sri Wahyuni Sri Wahyuni Sudarman Bennu Sukayasa Sukayasa Sutji Rochaminah Suwardin, Muhammad Tahril Tobigo, Yekri Sandi Ulfiana, Dewi Usman HB Welli Meinarni Welli Meinarni Windia Hadi, Windia Wirdania, Wirdania Yuli Asri Yunita, Rezki Lola