MISMARNI, M. Upaya Meningkatkan Hasil Belajar Matematika Melalui Strategi Pembelajaran Berbasis Masalah Di Kelas V SDN 02 Sitiung Tahun Pelajaran 2021/2022: Efforts to Improve Mathematics Learning Outcomes through Problem-Based Learning Strategies in Class V SDN 02 Sitiung For the 2021/2022 Academic Year. ijtvet 2022, 3, 1-11.