AN ANALYSIS OF STUDENTS’ LEARNING OUTCOMES AFTER THE IMPLEMENTATION OF PROBLEM BASED LEARNING (PBL) IN THE DEVELOPMENT OF MATHEMATICS WORKSHEETS IN ELEMENTARY SCHOOLS: A LITERATURE STUDY. Jurnal Merah Putih Sekolah Dasar, The Indonesian Journal of Primary School Education [Internet]. 2024 Mar. 31 [cited 2026 Mar. 23];1(4):125-39. Available from: https://jurnal.unimed.ac.id/2012/index.php/jmpsd/article/view/58626