Analysis Of the Effectiveness of Project-Based Learning in the Optics and Electronics 1 Laboratory on Conceptual Understanding and Problem-Solving Skills Among Physics Education Students at UNTL. MAGNETON [Internet]. 31 Juli 2026 [dikutip 14 Agustus 2026];4(2):115-20. Tersedia pada: https://www.journal.unwira.ac.id/index.php/MAGNETON/article/view/5452