Marasigan, A. C. . and Espinosa, A. A. . (2014) “Modified Useful-Learning Approach: Effects on Students‘ Critical Thinking Skills and Attitude towards Chemistry”, International Journal of Learning, Teaching and Educational Research, 1(1), pp. 35–72. Available at: http://ijlter.net/index.php/ijlter/article/view/1221 (Accessed: 2 January 2026).