Tavakolian, Mehrzad, et al. “The Effect of Relevant and Irrelevant Humor in Educational Content on the Academic Engagement of Fourth-Grade Male Students”. 2025. International Journal of Education and Cognitive Sciences, vol. 6, no. 2, Dec. 2025, pp. 1-6, https://doi.org/10.61838/kman.ijecs.6.2.20.