Maria Monica Situmorang, Yuyun Elizabeth Patras, Tatang Muhajang. PENGARUH PENERAPAN MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SUBTEMA PELESTARIAN KEKAYAAN SUMBER DAYA ALAM DI INDONESIA. didaktik [Internet]. 2023Jul.19 [cited 2026Sep.22];9(2):6258 -6263. Available from: http://journal.stkipsubang.ac.id/index.php/didaktik/article/view/1325