Picardal, Marchee T., and Joje Mar P. Sanchez. “Effectiveness of Contextualization in Science Instruction to Enhance Science Literacy in the Philippines: A Meta-Analysis”. International Journal of Learning, Teaching and Educational Research 21, no. 1 (January 30, 2022): 140–156. Accessed April 18, 2026. http://ijlter.myres.net/index.php/ijlter/article/view/1234.