Intan Diyah Pratiwi, Edy Suprapto, Utami. PENINGKATAN HASIL BELAJAR PESERTA DIDIK MENGGUNAKAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING MATERI FUNGSI TRIGONOMETRI. didaktik [Internet]. 2025Feb.1 [cited 2026Sep.11];10(04):231 -240. Available from: https://www.journal.stkipsubang.ac.id/index.php/didaktik/article/view/4242