Larasafitri, M.N. et al. 2022. The Validation of Learning Devices Based on Cognitive Conflict Approach in Blended Learning Model. Jurnal Penelitian Pendidikan IPA. 8, 6 (Dec. 2022), 3117–3120. DOI:https://doi.org/10.29303/jppipa.v8i6.2185.