Anggriani G, Suryani SD, Hartati MS. Development of a Project-Based Learning-Oriented Practicum Guide on the Respiratory System to Enhance Junior High School Students’ Critical Thinking Skills . ainj [Internet]. 2026Mar.30 [cited 2026Apr.1];7(1):133-42. Available from: https://journal.ainarapress.org/index.php/ainj/article/view/1331