Pengembangan Media Pembelajaran Berbasis GeoGebra untuk Meningkatkan Pemahaman Konsep Geometri Transformasi di Kelas XI SMA Negeri 5 Surabaya

Aulia Rahma Fitri (Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Negeri Surabaya, Indonesia.)
Budi Santoso (Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Negeri Surabaya, Indonesia.)
Citra Dewi Kusuma (Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Negeri Surabaya, Indonesia)

Journal of Science and Mathematics Education
Vol. 2 No. 2 (2026): Journal of Science and Mathematics Education, June 2026

This study aims to develop GeoGebra-based learning media for transformation geometry material in class XI Senior High School (SMA) to improve students’ conceptual understanding. The research employed the Research and Development (R&D) approach with the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). Data were collected through validation questionnaires, pre-test, post-test, and student response questionnaires involving 30 students of class XI MIPA 2 at SMA Negeri 5 Surabaya. Validation results from material experts and media experts showed average scores of 4.83 and 4.72 respectively, both categorized as very good. The N-Gain score obtained was 0.58, indicating moderate improvement in students’ conceptual understanding after using the GeoGebra-based media. Furthermore, 83.33% of students achieved the minimum completion criteria compared to only 23.33% before the intervention. Students’ positive responses reached 89.7%, indicating high acceptance and engagement with the developed media. These findings demonstrate that GeoGebra-based learning media is effective and feasible for use in transformation geometry learning.