Khoiroh N. THE IMPLEMENTATION OF THE PROBLEM-BASED LEARNING (PBL) MODEL USING A VIRTUAL LAB TO IMPROVE STUDENTS’ LEARNING OUTCOMES ON POTENTIAL AND KINETIC ENERGY MATERIAL . EJHEAA [Internet]. 2025 Jul. 3 [cited 2025 Oct. 12];2(7):338-42. Available from: https://journal.antispublisher.id/index.php/EJHEAA/article/view/1345