Azriyanti, R. and Syafriani 2023. Validation of the Physics E-Module Based on Problem Based Learning as Independent Teaching Material to Improve Critical Thinking Skills of Class XI High School Students . Jurnal Penelitian Pendidikan IPA. 9, 11 (Nov. 2023), 10223–10229. DOI:https://doi.org/10.29303/jppipa.v9i11.5809.