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Bete, Hendrika
Universitas Timor
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Analysis of Students’ Mathematical Reasoning Ability in Solving Problems on Quadratic Equations at SMP Negeri Bitefa Hendrika Bete; Aprilia Binsasi; Maria Naimnule
MATH-EDU: Jurnal Ilmu Pendidikan Matematika Vol. 11 No. 1 (2026): MATH-EDU: Jurnal Ilmu Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika, Fakultas Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jipm.v11i1.10918

Abstract

This study aimed to analyze students’ mathematical reasoning ability in solving problems on the topic of quadratic equations at SMP Negeri Bitefa. The research used a qualitative descriptive approach with 18 eighth-grade students as participants. Data were collected through tests of mathematical reasoning and follow-up interviews with three selected subjects representing high, medium, and low levels of reasoning ability. The results showed that students’ reasoning abilities varied across five indicators: (1) making initial conjectures and predictions based on problem context, (2) performing mathematical manipulations to find patterns and relationships, (3) constructing systematic mathematical arguments and proofs, (4) evaluating mathematical arguments for accuracy, and (5) integrating analysis results to draw logical conclusions. The findings revealed that students generally demonstrated moderate reasoning ability. The strongest performance appeared in the ability to draw conclusions (50.74%), while the weakest was in generating conjectures (44.81%). These results suggest the need for mathematics instruction that emphasizes inquiry-based and problem-solving learning strategies to improve reasoning competence.
Co-Authors Ahzan, Zulkaidah Nur Aloisius Loka Son Amsikan Stanislaus Andhy Rudhito, Marcellinus Anunut, Ardi Plasidus Aprilia Binsasi Bano, Elinora Naikteas Bone, Dominifridus Cecilia Novianti Salsinha Chatarina Enny Murwaningtyas Chrisinta, Debora Dominifridus Bone Dominifridus Bone Eva Binsasi Faustinus Luan Ferdinandus Mone Fiki Alghadari Fitriani Fitriani Fransiska Noviana Adu García-García, Javier Gelole, Petrus Yulianto Hall, Eric Steven Hendrika Anunut Hijriani, Lailin Hongki Julie Javier García-García Juventianus Kenjam Kasa, Andreas Roberto Kondradus Yohanes Klau Kore, Fransiskus Xaverius Ladja, Yosepha Patricia Wua Lailin Hijriani Maifa, Talisadika Serrisanti Marcellinus Andhy Rudhito Maria Naimnule Maria Oriyanti Bui mone, ferdinandus Muti, Febriana Naimnule, Maria Nifu, Martha Marsela Oktovianus Mamoh Palla, Yovita Maria Rodríguez-Nieto, Camilo Andrés Ronaldus Ariyanto Jelahu Selestina Nahak Siahaan, Meiva Marthaulina Lestari Simarmata, Justin Eduardo Solo, Prudensius Manek Maria Fransiska Venidora Stanislaus, Amsikan Sudirman Sulasri Suddin Timutang, Moses Wua Laja, Yosepha Patricia