Effect of QR Code Scan-Based 3D Puzzle Media on Learning Outcomes in Class V Science Learning in Elementary Schools: Media Puzzle 3D Berbasis Scan QR Code Terhadap Hasil Belajar Pada Pembelajaran IPA Kelas 5 di Sekolah Dasar. ijemd. 2023;18(1):10.21070/ijemd.v21i.721. doi:10.21070/ijemd.v21i.721