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Hani Handayani
Universitas Sarjanawiyata Tamansiswa
Education Mathematics

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E-Worksheets Based on Ethno-Modeling and Tri-N to Improve Mathematical Critical Thinking Skills of Grade VII Students Hani Handayani; Sri Adi Widodo; Irham Taufiq; Wahyu Hidayat; Usman Arifin
Journal of Instructional Mathematics Vol. 7 No. 1 (2026): Digital Media and Critical Thinking in Mathematics Learning
Publisher : Pendidikan Matematika STKIP Kusuma Negara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37640/jim.v7i1.2758

Abstract

Mathematical critical thinking remains an essential yet underdeveloped competency in 21st-century mathematics learning, particularly when instruction lacks meaningful cultural context. At SMP Pembangunan Piyungan, number-topic instruction predominantly emphasizes procedural over contextual and reflective thinking, signaling an urgent need for culturally-grounded, innovative learning media. This study examines the improvement trend in seventh-grade students' mathematical critical thinking ability through E-Worksheets integrating Ethno-Modeling—connecting mathematical concepts with Piyungan's local cultural context—and the Tri-N approach (Niteni, Nirokke, Nambahi), which systematically guides students through observing, imitating, and developing ideas. Employing a time-series design, data were collected via mathematical critical thinking tests administered at each intervention meeting and analyzed quantitatively by tracking average score trends over time. Results demonstrate a consistent upward trend, with average scores rising from 89.09 at the first meeting to 96.18 at the seventh—indicating that E-Worksheets grounded in local cultural contexts and structured Tri-N learning stages effectively foster students' mathematical critical thinking development. These findings position Ethno-Modeling-based E-Worksheets integrated with Tri-N as a promising alternative medium for meaningful and culturally responsive mathematics learning.
Co-Authors Irham Taufiq Sri Adi Widodo Usman Arifin Wahyu Hidayat