Hussain S, Butt IH, Qaisar S. Effect of Flipped Classroom Approach (FCA) on Grade 9 Students’ Academic Achievement in the Subject of Chemistry. AHSS [Internet]. 2023 Nov. 28 [cited 2024 Nov. 21];4(4):412-9. Available from: https://ojs.ahss.org.pk/journal/article/view/403