Tika, I.N. and Agustiana, I.G.A.T. 2021. The Effect of a Blended Learning Project Based Learning Model on Scientific Attitudes and Science Learning Outcomes. Jurnal Ilmiah Sekolah Dasar. 5, 4 (Oct. 2021), 557–566. DOI:https://doi.org/10.23887/jisd.v5i4.39869.