Amistoso, Richelle Marie. “Teachers’ Perceptions on the Effectiveness of DepEd TV and Radio-Based Instruction in Teaching Mathematics Among Teachers in Cawayan East District”. International Journal of Sustainability and Advanced Integrated Research 2, no. 2 (May 14, 2026): 2015–2020. Accessed October 18, 2026. https://serverojs1-ijsair.sharkcluster.com/index.php/ijsair/article/view/507.