Fitriani, H. ., Samsuri, T., Rachmadiarti, F. ., & Raharjo, R. (2022). Characteristics of Evaluation-Process Biology Learning Tools Based on Conceptual Problem-Based Learning Models to Train Critical Thinking Skills. Jurnal Penelitian Pendidikan IPA, 8(1), 269–276. https://doi.org/10.29303/jppipa.v8i1.1168