Luthfiyani F, Suwarna IP. A Counterbalanced Quasi-Experiment Comparing Problem-Based Learning with Zep Quiz, Zep Quiz Alone, and Traditional Lecture on Critical Thinking in High School Mechanics. JPIP [Internet]. 2026 May 22 [cited 2026 May 24];19(1). Available from: https://journal.uny.ac.id/index.php/jpip/article/view/97460