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All Journal JRAMathEdu (Journal of Research and Advances in Mathematics Education) Jurnal Inovasi Pendidikan dan Pengajaran
Hartono Hartono
Universitas PGRI Pontianak
Mathematics Other

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Development of ethnomathematics-integrated android-based media for enhancing problem-solving skills in secondary geometry learning Hodiyanto Hodiyanto; Patrick Kyeremeh; Gemi Susanti; Veti Aprida; Hartono Hartono
JRAMathEdu (Journal of Research and Advances in Mathematics Education) Volume 11, Issue 1, January 2026
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jramathedu.v11i1.13730

Abstract

Mathematical problem-solving abilities among junior high school students remain persistently underdeveloped, particularly in geometry instruction on prisms and pyramids, which frequently proceeds without interactive or culturally responsive media. Although interest in ethnomathematics-informed digital tools continues to grow, empirical evidence directly linking Android-based applications grounded in local cultural heritage to measurable gains in problem-solving at this level remains scarce. This study developed an Android-based m-learning medium integrating ethnomathematical elements into prism and pyramid instruction to enhance eighth-grade students’ mathematical problem-solving skills. The 4D Model (Define, Design, Develop, and Disseminate) was applied, and a small-scale pilot trial was conducted involving ten eighth-grade students at SMP Negeri 2 Pontianak. Expert appraisal yielded a composite validity score of 95.33%, practitioner and learner evaluations produced a practicality rating of 93.95%, and effectiveness testing revealed a statistically significant improvement, with mean scores rising from 51.11 at pretest to 90.83 at posttest (p = 0.00000034; Cohen’s d = 3.09). The integration of local cultural artefacts—notably ketupat, patlau, and pengkang—effectively bridged abstract geometric concepts with students' everyday experiences. Given the pilot nature of this study, the findings should be regarded as preliminary and not yet generalisable. Future research is encouraged to involve larger, more diverse samples and to employ controlled experimental designs to validate these outcomes more rigorously.
Pengembangan buku saku digital berbasis STEM terhadap kemampuan pemecahan masalah matematis siswa pada materi bilangan bulat kelas VII SMP Negeri 1 Embaloh Hulu Hardianus Tomi; Dwi Oktaviana; Hartono hartono
Jurnal Inovasi Pendidikan dan Pengajaran (JIPP) Vol. 5 No. 1 (2026): Maret: Jurnal Inovasi Pendidikan dan Pembelajaran (JIPP)
Publisher : LPD Universitas PGRI Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31571/jipp.v5i1.10584

Abstract

This study aims to develop a STEM-based digital pocket book to improve students’ mathematical problem-solving abilities on the topic of integers for seventh-grade students at SMP Negeri 1 Embaloh Hulu. This study employed a Research and Development (R&D) method using the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). Data were collected through indirect communication techniques and measurement techniques, using expert validation sheets, practicality questionnaires, and posttest questions. The research sample consisted of 28 students from class VII A. The data analysis techniques included validity, practicality, and effectiveness analyses.The results showed that the developed STEM-based digital pocket book was categorized as very valid with a validity percentage of 90%, very practical with a practicality percentage of 91.5%, and effective with an effectiveness percentage of 67.86%. Therefore, the STEM-based digital pocket book is feasible for use in the mathematics learning process in schools. Keywords: Digital pocket book, problem-solving skills, STEM, integers
Co-Authors Dwi Oktaviana Hardianus Tomi Hodiyanto Patrick Kyeremeh Susanti, Gemi Veti Aprida