Buniel, John Manuel Cotares, and Vilma Agua Monding. “Effectiveness of Developed Worksheets to the Academic Achievement of Students in Science 9 Concepts”. International Journal for Innovation Education and Research 9, no. 4 (April 1, 2021): 210–214. Accessed April 29, 2024. https://scholarsjournal.net/index.php/ijier/article/view/3041.