Dr Ephraim J. Gongden 2025. Effectiveness of Flipped Classroom Approach (FCA) on Students’ Achievement and Retention in Chemical Equilibrium in High Schools in Jos, Plateau state – Nigeria. International Journal of Educational Excellence and Innovation. 2, 02 (Feb. 2025), 47–61. DOI:https://doi.org/10.5281/zenodo.14899784.