<![CDATA[ Abstract The research objective is to develop mathematics learning media with Geogebra in improving students' mathematics learning outcomes. This development uses the ADDIE model. The research was conducted at SMPN 4 Janapria with the research subjects of class VII taken randomly with a total of 25 students. The instruments used were validation sheets, practicality questionnaires from teachers and students, and learning outcomes tests. The results of the data analysis of the validity of the media obtained an actual total score of 183 and were categorized as very valid, the teacher and student response questionnaires, and the learning outcomes test were categorized as very valid and feasible to use. The quality of the practicality of the media developed met the practical criteria of teacher responses with a score of 38 and the percentage of student response scores of 88.45% ≥75%. The effectiveness criteria can be seen from the increase in student learning outcomes above the KKM (70) and the percentage of classical completeness ≥75%. The pre-test data on student learning outcomes obtained a percentage value of 39.66 increasing to 78.62 based on the post test and the average post-test data score of 78.62 above the KKM with classical completeness reaching 87.50%. Keywords: Mathematics Learning Media, Geogebra, Learning Outcomes Abstrak Tujuan penelitian mengembangkan media pembelajaran matematika dengan Geogebra dalam meningkatkan hasil belajar matematika siswa. Pengembangan ini menggunakan model ADDIE. Penelitian dilaksanakan di SMPN 4 Janapria dengan subjek penelitiannya kelas VII diambil secara acak sejumlah 25 siswa. Instrumen yang digunakan lembar validasi, angket kepraktisan dari guru dan siswa, dan tes hasil belajar. Hasil analisis data kevalidan media memperoleh skor total actual sebesar 183 dan berkategori sangat valid, angket respon guru dan siswa, serta tes hasil belajar berkategori sangat valid dan layak untuk digunakan. Kualitas kepraktisan media yang dikembangkan memenuhi kriteria praktis dari respon guru dengan skor 38 dan persentase skor respon siswa 88,45% ≥75%. Kriteria keefektifan terlihat dari meningkatnya hasil belajar siswa yang diatas KKM (70) dan persentase ketuntasan klasikal ≥75%. Data pre test hasil belajar siswa memperoleh persentase nilai 39,66 meningkat menjadi 78,62 berdasarkan post test dan nilai rata-rata data post test sebesar 78,62 diatas KKM dengan ketuntasan klasikal mencapai 87,50%. Kata kunci: Media Pembelajaran Matematika, Geogebra, Hasil Belajar]]>
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