This research is motivated by the difficulties of the teacher in implementing online learning, which makes students less enthusiastic and less able to understand the material in online learning, so the development of interactive video media is needed. This study aims to produce interactive video media for grade three elementary school number line materials tested for validity. The development model used in this study is the ADDIE model. The subjects in this study consisted of 1 teacher and four dose experts who were experts in their fields as media experts and material experts, and 12 students consisting of 3 people as individual tests and nine students as small group tests. The method of data collection in this study is the method of questionnaires and interviews. The data generated in this study are qualitative and quantitative. The data obtained were then analyzed using the mean formula to determine the average validation of interactive video media. The development of interactive video media was declared valid based on the assessments of media experts, design experts, material experts, individual test students, and small group students with an average range of 4.01 < X 5, with the qualification "very good.” Thus, it can be indicated that the interactive video product is declared valid and suitable for use in learning, especially on the number line material for third grade of elementary school.

Penelitian ini bertujuan untuk menguji efektivitas perangkat pembelajaran kooperatif pada mata pelajaran IPA topik perpindahan kalor kelas V SD Perangkat pembelajaran yang dikembangkan berupa Rencana Pelaksanaan Pembelajaran (RPP) kooperatif tipe Numbered Head Together (NHT) terhadap peningkatan hasil belajar IPA di kelas V SD. Model pengembangan yang digunakan dalam penelitian ini adalah model pengembangan ADDIE (Analyze, Design, Development, Implementation, Evaluation). Mengingat keterbatasan waktu karena menerapkan sistem lockdown, penelitian ini hanya dilaksanakan sampai dengan tahap pengembangan (development) saja. Hasil analisis pengembangan perangkat pembelajaran kooperatif tipe NHT diperoleh hasil: validitas isi instrumen sebesar 1,00 dengan interprestasi sangat tinggi dan reliabilitas instrumen sebesar 0,98 dengan interprestasi sangat tinggi. Berdasarkan hasil analisis diperoleh simpulan yakni Pengembangan Perangkat Pembelajaran Kooperatif Tipe NHT di Kelas V SD diperoleh validitas isi instrumen dinyatakan valid dan reliabel. Saran untuk penelitian selanjutnya dapat mengembangkan perangkat pembelajaran kooperatif tipe NHT ini dan mengkaitkannya dengan mata pelajaran lain, sehingga dapat menambah ilmu pengetahuan.