SYAHFITRI, Jayanti; ENDANG SULAIMAN. Implementation of Student Worksheets Based on Problem Based Learning to Improve Students’ Critical Thinking Skills. Quagga: Jurnal Pendidikan dan Biologi, [S. l.], v. 15, n. 2, p. 188–192, 2023. DOI: 10.25134/quagga.v15i2.43. Disponível em: https://journal.fkip.uniku.ac.id/quagga/article/view/43. Acesso em: 16 nov. 2026.