Siti Aminah, et al. “PENGARUH MODEL PEMBELAJARAN CERAMAH DAN KOOPERATIF LEARNING TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS ”. JOEL: Journal of Educational and Language Research, vol. 2, no. 12, July 2023, pp. 1369-76, doi:10.53625/joel.v2i12.6059.