PURBA, Rika Wulandari Br; ARCAT, Arcat; AFRI, Lusi Eka. The Effect of The Student Facilitator and Explaining Cooperative Learning Model on The Mathematical Problem-Solving Ability of Grade IX Students at Junior High School Tiga Hati Kepenuhan Hulu. Journal of Biology, Chemistry, Mathematics and Physics Education, [S. l.], v. 2, n. 2, p. 59–64, 2025. DOI: 10.61761/biochamp.2.2.59-64. Disponível em: https://journal.stedca.com/index.php/biochamp/article/view/181. Acesso em: 13 sep. 2025.