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EXPLORING JUNIOR HIGH SCHOOL STUDENTS’ CRITICAL THINKING PROCESSES IN SOLVING SYSTEMS OF LINEAR EQUATIONS USING GEOGEBRA: A QUALITATIVE CASE STUDY iventri, kuirinus; Lukito, Agung; Wijayanti, Pradnyo
SOSIOEDUKASI Vol 15 No 1 (2026): SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan Universaitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/sosioedukasi.v15i1.7291

Abstract

Critical thinking is an essential cognitive skill in mathematics learning, particularly in solving contextual and non-routine problems. However, many junior high school students still experience difficulties in applying critical thinking when solving systems of linear equations. This study aims to explore the critical thinking processes of students in solving systems of linear equations in two variables (SPLDV) using GeoGebra. A qualitative descriptive approach with a case study design was employed. The participants were 25 ninth-grade students from a junior high school in Surabaya, Indonesia. Based on the results of a critical thinking test, three students were purposively selected to represent successful, less successful, and unsuccessful problem solvers. Data were collected through GeoGebra-assisted problem-solving tasks and semi-structured interviews, and analyzed using Facione’s critical thinking framework: interpretation, analysis, inference, evaluation, explanation, and self-regulation. The findings reveal that successful students demonstrated all six critical thinking processes consistently, while less successful students showed partial fulfillment of the indicators. Unsuccessful students failed to demonstrate most critical thinking processes due to weak conceptual understanding and poor problem interpretation. GeoGebra supported visualization and verification of solutions but did not replace conceptual reasoning. These findings highlight the importance of integrating technology with explicit instruction on critical thinking processes in mathematics learning.
Co-Authors ., LISNANI ABADI Abadi Abadi Aditama, Fauziyah Kartika AGUNG LUKITO Agung Lukito Ahmad Junaidi Hutama Putera Aina Saidah Aini, Rahmawati Nur Alia, Hilma Alvinaria Alvinaria Andriani, Danica Patricia ANGGI VATMIKE PUTRI, FEBBRYOLLA Anisa'a Faradilla Anwari, Nabilah Chairunisa Ardianzah, Mochamad Andy Atik Winarti Atik Wintarti, Atik Bias Nadilia Burhanudin Sugiyono, Aswin Cahyati, Vania Idelia Candra Ainur Rofiq Choirunisa Firda Haryanti Chyntia Dewi Puspita Rini Didik Suliswanto Dinda Putri Rubiyanti Dwi Juniati Dwi Juniati Dwi Juniati DWI VIDIA NINGSIH, SISKA Elgiyan, Naili Fauziyah Endah Budi Rahaju ENDANG SUSANTINI Faiq, Wang Achmad Althof FAJRIATI, MIRA Falah, Bintari Nur Faradilla, Anisa'a fathikhin, nurul Fiangga, Shofan Firdausa Yanuar GIGIH MAHARGA, YESAYAKA Gurit Wulan Jagadianti Halizah, Tsania Rahmah Heri Purnomo Ika Kurniasari Ika Kurniasari Ikka Ananda Hakiki Indan Afifah Rahmawati Indrawatiningsih, Nonik IRA IRZAWATI, IRA Irma Zahrotul Jamilah Ismail Ismail Ismail, Ismail Iventri, Kuirinus Jagadianti, Gurit Wulan Khumairoh, Binta KUSUMA ANGGRAINI, RINI Lisnani Lisnani Manuharawati Maria Ulfa Marwah, Aulia Putri MASRIYAH Mawardi, Arnindia Via MAY MAHARENI, DINA Ma’rifah, Ummi Mega Teguh Budiarto Mirza Geraldine Mohamad Gufron Muchammad Khafith Octafian Purnomo Nikmarocha Nina Prihartiwi Noviari, Rahma NUR HIDAYANTI, ALFI Nur Izzatul Isslamiyah Oktaviana Ainun Ratnawati Oktaviana Ainun Ratnawati Pakpahan, Milka Rosabella Marito Prasetyo Kurniawan PRIANGKA TANJUNG, MEYRNI Proboretno, Setyaning Purwadhani, Dea Annice Putera, Ahmad Junaidi Hutama Putri, Alifia Rachma Putri, Anggi Adelia Putri, Astrie Karina Putri, Cika Noviana Raden Sulaiman Rahmawati Nur Aini Rahmawati Nur Aini Rahmawati Nur Aini Ramadhani, Safira Putri Ratih Puspasari Ratu Mauladaniyati Renata Nurlaily Rowdlotul Jannah Reny Wahyuni Riky Prasetia Wijaya Rini Setianingsih Rini Setianingsih RUSLY HIDAYAH Saadah, Nurus Sa’diyah, Mukhtamilatus Setyo Hartanto Shofan Fiangga Siti Maghfirotun Amin Sopian Sugi Hartono Sumarni Sumarni Susanah Susanah Susanah Susanah Susanah Tatag Yuli Eko Siswono Tatag Yuli Siswono Toni Phibeta Wadhon Eka Shabrina Yanti, Liza Puspita YUNI SRI RAHAYU Yusril Rahmat Hidayat Yusrina, Siti Laiyinun Zhalsadilah Yuniar Kristanti