Sarbaini W. Design and validation of problem-based learning student worksheets for Pancasila and Civic Education: A case study in junior high school. Int. J. Adv. Educ. Rev. [Internet]. 2025 Feb. 28 [cited 2026 Mar. 22];1(3):121-9. Available from: https://journals.pelitapublishing.com/index.php/ijaer/article/view/117