Zubair Ahmed Memon and Dr. Sumera Irum (2025) “A Study of Teachers’ Content Knowledge (CK) and Pedagogical Content Knowledge (PCK) and its effects on the Students’ Conceptual Understanding in Biology at Secondary School level of Sukkur Region”., Social Science Review Archives, 3(1), pp. 2493–2502. doi: 10.70670/sra.v3i1.558.