Putri, Maiyusri Eka, Yuni Ahda, Azwir Anhar, and Dwi Hilda Putri. 2023. “The Effect of Problem-Based Learning Models and Prior Knowledge Toward Critical Thinking Skills on Human Digestive and Circulatory System”. Jurnal Penelitian Pendidikan IPA 9 (5):3905-14. https://doi.org/10.29303/jppipa.v9i5.3697.