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Review of Critical Thinking Ability as an Indicator in Solving Mathematical Problems Based on Representation Hijriani, Lailin; Siahaan, Meiva Marthaulina Lestari; Simamarta, Justin Eduardo; Salsinha, Cecilia Novianti; Mone, Ferdinandus
IndoMath: Indonesia Mathematics Education Vol 9, No 1 (2026): Vol 9 No 1, February 2026
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/indomath.v9i1.183

Abstract

This study aims to describe student’s critical thinking ability in solving mathematical problems based on the type of representation used when solving the given problems. The study was conducted in 9th grade in junior high school in Kefamenanu, Timor Tengah Utara, NTT, Indonesia. Three respondents were selected from 28 students who were given a critical thinking ability test based on the completeness of their answers and then interviewed to clarify their answers. The instruments used in this study were test questions and interview guidelines. Test data obtained, has been analyzed based on Facione's critical thinking ability indicators which include interpretation, analysis, evaluation, inference, explanation, and self-regulation. The results showed that student with symbolic representation, fulfilled 4 indicators of critical thinking ability, namely interpretation, analysis, evaluation, and inference. Which means that symbolic representation tends to support deeper critical thinking indicators than visual or verbal. Where student with visual representation fulfilled the critical thinking skills indicators, namely analysis and evaluation. Meanwhile, student with verbal representation fulfilled 1 indicator, namely interpretation.
Numeracy across field-dependent and field-independent cognitive styles of junior high students in Indonesia Son, Aloisius Loka; Bete, Hendrika; Salsinha, Cecilia Novianti
Jurnal Elemen Vol 12 No 1 (2026): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v12i1.32267

Abstract

This study explores differences in numeracy between junior high school students with Field-Dependent (FD) and Field-Independent (FI) cognitive styles. Using a qualitative descriptive approach, the study was conducted in two junior high schools in Kefamenanu, West Timor, Indonesia. Forty students, evenly distributed across the two schools, participated in the study. Data were collected through numeracy tests and in-depth interviews to examine students’ performance across three numeracy components: understanding, application, and reasoning. The findings reveal that students with an FI cognitive style generally demonstrated competence in all three components, although some experienced difficulties in reasoning tasks requiring critical evaluation and formal justification. In contrast, students with an FD cognitive style tended to achieve only the understanding and application components and faced persistent challenges in progressing to the reasoning component. These results highlight the importance of differentiated numeracy instruction. FD students benefit from visual representations, explicit guidance, and collaborative learning to strengthen foundational, whereas FI students require non-routine and argumentative tasks to enhance higher-order reasoning. This study recommends that educators and future researchers implement inclusive numeracy literacy practices aligned with students’ cognitive styles.
The Effect of Providing Non-Cognitive Diagnostic Assessments and Realistic Mathematics Learning Approaches to Improve Students' Mathematical Literacy Skills Maria Erwinda Kefi, Winda; Salsinha, Cecilia Novianti; Simarmata, Justin Eduardo
MATH-EDU: Jurnal Ilmu Pendidikan Matematika Vol. 10 No. 3 (2025): 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.v10i3.10544

Abstract

This study aims to determine the effect of providing non-cognitive diagnostic assessments and Realistic Mathematics Education (RME) on improving students' mathematical literacy skills. This study applies a quasi-experimental method with a 2x2 factorial-based research design. Grade VIII students at Naiola State Junior High School were the population and sample in this study. The results of this study show that (1) there are differences in mathematical literacy skills between students who are given non-cognitive diagnostic assessments (students with very high, adequate, low and very low interest in learning); (2) there is a difference in students' mathematical literacy skills between students who are taught conventionally); (3) there is significant interactivity between non-cognitive diagnostic assessments and learning approaches to students' mathematical literacy skills. Thus, non-cognitive diagnostic assessments combined with realistic mathematical learning approaches have an effect on improving students' mathematical literacy skills compared to other treatments.