K. . Akalamkam, “Science Teaching-Learning in Online Mode: A Study of Techno-pedagogical Knowledge Development in Teachers”, SS, vol. 59, no. 1-2, pp. p.27–44, Jun. 2021, Accessed: Aug. 19, 2025. [Online]. Available: http://ejournals.ncert.gov.in/index.php/SS/article/view/2744