Aneliana A, Ditasona C, Manalu RU. The Development of Student Worksheet Based on Problem Based Learning Approach on Matrices Topics. Brillo J. [Internet]. 2022 Dec. 31 [cited 2024 Dec. 22];2(1):54-62. Available from: https://journal.sncopublishing.com/index.php/brillojournal/article/view/23