Cajurao, E. C.; Mortel, J. C. V.; Maglente, M. S. C.; Dumaguin, J. R.; Paloma, V. V.; Rios, C. R.; Rivas, M. A. D. Modular Distance Learning: Perceived Challenges and Strategies of Secondary Science Teachers in Mandaon District, Masbate, Philippines. IJMABER 2023, 4, 2023-2037.