KHASNA, Fenny Tanalinal; NURIYAH, Nuriyah. Validity Analysis of the OIPE Model Teaching Materials with Experimental Methods to Train Critical Thinking Skills of Elementary School Students. Jurnal Penelitian Pendidikan IPA, [S. l.], v. 9, n. 5, p. 3883–3889, 2023. DOI: 10.29303/jppipa.v9i5.3525. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/3525. Acesso em: 20 may. 2024.