Dr. Noreen Ayaz, Dr. Muhammad Saeed Khan, Syed Ghazanfer Abbas*, and Anwar Mahjabeen. 2024. “Impact of Concept Based Activities (CBA) on Retention of Knowledge of Students in General Science at Elementary School Level”. Policy Journal of Social Science Review 2 (4):205-15. https://journalofsocialsciencereview.com/index.php/PJSSR/article/view/37.