Necia Sitorus, Lisbet Novianti Sihombing, & Osco Parmonangan Sijabat. (2023). Two Stay Two Stray Type Cooperative Learning Model on The Learning Outcomes of IPS Class V SD Students of Negeri 125138 Pematang Siantar. International Journal of Integrated Science and Technology, 1(3), 243–252. https://doi.org/10.59890/ijist.v1i3.518