Ogundipe, T. and Akinyemi, A.L. 2025. The Development of an Interactive Video-Based Instructional Package for Teaching Mathematics in Primary Schools in Osun State, Nigeria. E-Learning Innovations Journal. 3, 2 (Sep. 2025), 139–171. DOI:https://doi.org/10.57125/ELIJ.2025.09.25.06.