Ulfah AZ, Suyono S, Supardi ZAI, Erman E. DESAIN LKPD BERBASIS PROBLEM BASED LEARNING (PBL) PADA MATERI POLUSI UDARA UNTUK MELATIHKAN SCIENTIFIC ATITUDE A BELIEF THAT PROBLEMS HAVE SOLUTIONS DAN KEMAMPUAN LITERASI SAINS PESERTA DIDIK SMP. optika [Internet]. 2025May17 [cited 2025Jun.28];9(1):69-7. Available from: https://e-journal.uniflor.ac.id/index.php/optika/article/view/5214