“PENGARUH MODEL PROBLEM BASED FLIPPED CLASSROOM TERHADAP KEMAMPUAN BERPIKIR KRITIS IPA SD”. JIPD (Jurnal Inovasi Pendidikan Dasar), vol. 7, no. 2, Oct. 2023, pp. 32-39, https://jurnal.unikastpaulus.ac.id/index.php/jipd/article/view/1225.