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Necia Sitorus, Lisbet Novianti Sihombing, Osco Parmonangan Sijabat. Two Stay Two Stray Type Cooperative Learning Model on The Learning Outcomes of IPS Class V SD Students of Negeri 125138 Pematang Siantar. IJIST [Internet]. 2023 Oct. 24 [cited 2026 May 26];1(3):243-52. Available from: https://journal.multitechpublisher.com/index.php/ijist/article/view/518