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All Journal Jurnal Elemen Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika (JRPIPM)
Zulkardi
Sriwijaya University
Education Mathematics Social Sciences Other

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Development of Turnreative Media to Improve Understanding of Derivatives in Mathematics Learning Gelcy Vania Auliani; Merlisa; Rizma Nurfajriah Qolbi; Zulhilmi Gibran Pramudhia; Elsa Susanti; Zulkardi; Budi Mulyono; Meryansumayeka
Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika Vol. 9 No. 2 (2025): JRPIPM DESEMBER 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrpipm.v9n2.p165-181

Abstract

This research develops a game-based interactive learning media called Turnreative, which is valid, effective, and practical for improving students’ understanding of algebraic function derivatives. The development follows the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). Data collection instruments include validation sheets, practicality sheets, pre-test and post-test questions, and interviews. The collected data were analyzed using descriptive quantitative and qualitative techniques to determine the validity, practicality, and effectiveness of the media. The subjects were three public high school students in Palembang. Validation results showed the media was very valid, with scores of 82.5% from media experts and 89.5% from material experts. In terms of practicality, teachers gave 93.52% and students 93.33%. A small-scale trial indicated a significant increase in student understanding, from an average pre-test score of 33.33 to 90 in the post-test. The results conclude that Turnreative is feasible to use as a learning medium for algebraic function derivatives and has proven to be effective and efficient in enhancing students’ mathematical problem-solving skills.
Tracing elementary students’ learning trajectories of surface area in museum-based activities Dina Octaria; Zulkardi; Ratu Ilma Indra Putri; Cecil Hiltrimartin
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.v12i1.33240

Abstract

Understanding the surface area of three-dimensional shapes remains challenging for elementary students, particularly in distinguishing between area and perimeter and in connecting two-dimensional representations to three-dimensional objects. This study aims to trace elementary students’ learning trajectories on the surface area of cubes and cuboids through museum-based activities to support spatial literacy development. The study employed a design research methodology with a validation study approach, consisting of preliminary design, a pilot experiment, a teaching experiment, and a retrospective analysis. Participants were 44 fifth-grade students from an elementary school in Palembang, Indonesia. Data were collected through classroom observations, students’ worksheets, video recordings, and interviews, and analyzed qualitatively by comparing the Hypothetical Learning Trajectory (HLT) with the Actual Learning Trajectory (ALT). The results show that the museum context supported students’ spatial visualization, reasoning, and communication by enabling them to identify geometric attributes of artefacts, construct and validate nets, and derive surface area formulas through guided reinvention. The targeted use of Augmented Reality (AR) further supported students during critical transitions between two-and three-dimensional representations. The synthesis of the HLT and ALT yielded a validated Learning Trajectory, which was abstracted into a Local Instructional Theory (LIT) for teaching surface area in elementary geometry.
Co-Authors Budi Mulyono Cecil Hiltrimartin Dina Octaria Elsa Susanti Gelcy Vania Auliani Merlisa Meryansumayeka Ratu Ilma Indra Putri Rizma Nurfajriah Qolbi Zulhilmi Gibran Pramudhia