Farida, S. , Fiantika, F.R. and Rusminati, S.H. 2023. Application of Open Ended Approach in FPB and KPK Material in Grade 4 Elementary School Students. Formosa Journal of Sustainable Research. 2, 11 (Nov. 2023), 2593–2604. DOI:https://doi.org/10.55927/fjsr.v2i11.6664.