TY - BOOK AU - Halima Shaukat AU - Supervised by Tanveer Afzal, Dr. Muhammad ED - Department of Science Education TI - Effect of numbered heads together strategy on achievements and retention of students at secondary level in chemistry U1 - 540.71 PY - 2025/// CY - 1 PB - Allama Iqbal Open University KW - Chemistry--Study and teaching (Secondary) KW - Cooperative learning--Effectiveness KW - Teaching strategies--Evaluation KW - Dissertations, Academic--MPhil Science Education N1 - MPhil/MS UR - https://aioupakistan-my.sharepoint.com/:b:/g/personal/aiou_thesis_aiou_edu_pk/EbqMmd8sXeNAmet631dYuRYBUUiswWbXD10puHii7QkDrg?e=qVof89 ER -