Penelitian ini merupakan penelitian dan pengembangan (research and development). prosedur penelitian dan pengembangan menggunakan model addie yang terdiri dari lima tahap yaitu, analysis, design, development, implementation dan evaluation. penelitian ini bertujuan untuk menghasilkan media pembelajaran e-poster yang ditinjau dari uji validitas media, materi, dan praktisi serta mengetahui efektivitas media pembelajaran e-poster. penilaian kelayakan media pembelajaran e-poster terdiri dari ahli media, ahli materi, dan ahli praktisi. hasil uji validasi yang diperoleh dari ahli media sebesar 88%, ahli materi 92%, ahli praktisi 90% dan uji coba terbatas 90,8%, uji coba lapangan 92,7%. berdasarkan hasil validasi ahli media, materi dan praktisi menunjukkan bahwa media e-poster sangat layak digunakan dalam proses pembelajaran. hasil angket ketertarikan siswa pada uji coba terbatas dan uji coba lapangan menunjukkan bahwa tingkat ketertarikan siswa terhadap media pembelajaran e-poster berada pada kategori sangat tertarik. kata kunci: penelitian dan pengembangan, media pembelajaran, e-poster, siswa kelas iii sd

This study used a research and development design. the addie model, which has five stages—analysis, design, development, implementation, and evaluation—was used for the research and development process. the purpose of this study was to create an e-poster learning media that was evaluated using practitioners', materials', and media's validity tests in order to determine the media's efficacy. e-poster learning media feasibility assessment consisted ofmedia experts, material experts, and practitioner experts. results of the validation tests were 88% for media experts, 92% for material experts, 90% for practitioner experts, 90.8% for limited testing, and 92.7% for field testing. based on the validation results of media experts, materials and practitioners show that e-poster media was very suitable to be used in the learning process. the findings of the student interest questionnaire in the field trial and limited trial revealed that students were extremely interested in using e-poster learning material. keywords: research and development, learning media, e-posters, third grade elementary school students