Penelitian ini bertujuan untuk mengetahui bagaimana kelayakan media pembelajaran Aplikasi Pahlawanku ditinjau dari validasi Ahli bahasa, ahli materi dan ahli media, serta kemenarikan ditinjau dari angket respon guru dan angket respon siswa. Jenis penelitian yang digunakan adalah penelitian dan pengembangan atau Research and Development (R&D). Model pengembangan yang digunakan mengacu pada model pengembangan ADDIE terdiri dari lima tahapan penelitian yaitu: 1) Analysis (Analisis); 2) Design (Perancangan); 3) Development (Pengembangan); 4) Implementation (Implementasi); 5) Evaluation (Evaluasi). Instrumen pengumpulan data yang digunakan yaitu: lembar validasi, angket respon guru dan angket respon siswa. Penelitian ini dilakukan di kelas IV-B SDN 032 Tarakan. Hasil validasi yang diperoleh dari ahli materi sebesar 92,5%, ahli bahasa sebesar 81,25 dan ahli media sebesar 85,41% dengan kategori sangat layak. Hasil dari angket respon guru sebesar 96,87%, angket respon siswa pada uji coba terbatas sebesar 98% dan pada uji coba lapangan sebesar 98,47% dengan kategori sangat menarik. Berdasarkan hasil validasi ahli materi, ahli bahasa, dan ahli media, respon guru, respon siswa pada uji coba terbatas dan uji coba lapangan maka, media pembelajaran Aplikasi Pahlawanku dinyatakan layak dan menarik digunakan dalam proses pembelajaran.

Kata Kunci: Pengembangan, Media Pembelajaran, Aplikasi Pahlawanku

The purpose of this study was to establish the feasibility of my hero application as a learning medium in terms of linguists', material experts', and media experts validation, as well as its attractiveness in terms of teacher and student response questionnaires. The type of research used was Research and Development (R&D) The ADDIE development model was employed, which consisted of five stages of research 1) analysis, 2) design, 3) development, 4) implementation, and 5) evaluation Validation sheets, teacher response questionnaires, and student response questionnaires were used to collect the data. This study was carried out in Tarakan. class IV-B, SDN 032 Material specialists scored 92.5 percent, linguists scored 81.25 percent, and media experts scored 85.41 percent, all in the very decent category The teacher response questionnaire had a score of 96.87 percent, the student response questionnaire had a score of 98 percent in the limited trial, and the field trial had a score of 98.47 percent with a highly interesting category. My hero application as a learning media was pronounced practicable and engaging to use in the learning process based on the findings of validation by material experts. linguists, and media experts, teacher responses, and student responses to limited trials and field testing. Keywords: Development, Learning Media, My Hero Application