Samosir, N., and M. Salayan. “The Influence of Problem-Based Learning With the Assistance of Geogebra on Student Mathematical Problem-Solving Ability”. Edumaspul: Jurnal Pendidikan, Vol. 7, no. 2, Oct. 2023, pp. 5093-9, doi:10.33487/edumaspul.v7i2.6977.