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All Journal Jurnal Ilmiah Pendidikan Dasar Jurnal Didaktik Matematika
Tommy Tanu Wijaya
School of Mathematical Sciences, Beijing Normal University, Beijing, China
Humanities Education Mathematics

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Exploration of Students' Epistemological Obstacles in Understanding the Concept of Variables and Expressions Rosliana Siregar; Muhammad Daut Siagian; Tommy Tanu Wijaya
Didaktik Matematika Vol 10, No 1 (2023): April 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v10i1.30694

Abstract

Variables and expressions serve as bridges where students cross from arithmetic to algebra. Although variables and expressions are important concepts in middle school and high school mathematics, they are topics that many students find challenging, and many, in fact, do not develop a thorough understanding of these topics. This study aims to explore the epistemological obstacles students face in understanding and interpreting the concepts of variables and expressions. Based on these objectives, a qualitative research design with a phenomenological approach was chosen to achieve this research objective. The subjects in this study were 8th grade middle school students in the city of Medan, Indonesia. Tests and interviews were used to collect data. The data obtained were analyzed using an inductive approach. The data obtained are presented in narrative and graphical forms. Based on the research results obtained, six types of student errors in solving problems related to the concept of variables and expressions were identified. Overall, students' limitations in understanding and interpreting variables as something unknown is one of the triggers for epistemological obstacles. Teachers should give chances for pupils to debate and explain variables and expressions in the classroom to assist students gain a comprehensive knowledge of these mathematical tools.
Stem-ethnoscience learning improves elementary students'critical thinking Rahmat Hidayat; Setyo Eko Atmojo; Mitha Dwi Anggriani; Tommy Tanu Wijaya
Jurnal Ilmiah Pendidikan Dasar Vol. 13 No. 2 (2026): Jurnal Ilmiah Pendidikan Dasar
Publisher : Prodi PGSD FKIP Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pendas.13.2.271-284

Abstract

This study aims to analyze the effect of implementing STEM-based science learning integrated with ethnoscience on critical thinking skills of elementary school students. This research is based on the importance of mastering critical thinking skills as one of the 21st century competencies that must be developed since the elementary school level, as well as efforts to link science learning with the local cultural context through ethnoscience. The research method used was a pseudo-experiment with a pretest-posttest control group design. The research instrument was a validated critical thinking skills test. Data analysis was conducted using prerequisite tests (normality and homogeneity) and hypothesis testing with paired sample t-test and independent sample t-test using SPSS 25. The results showed that there was a significant increase in critical thinking skills in students who participated in STEM-ethnoscience-based learning compared to students who participated in conventional learning. The application of STEM-ethnoscience provides a more meaningful learning experience because it connects science concepts with local cultural practices. Thus, it can be concluded that STEM learning integrated with ethnoscience is effective in improving critical thinking skills of elementary school students, and has the potential to become an innovative model in the development of culture-based science learning in the 21st century education era.
Co-Authors Mitha Dwi Anggriani Muhammad Daut Siagian Rahmat Hidayat Setyo Eko Atmojo Siregar, Rosliana