This study aims to determine whether there is an influence of the cooperative learning model type two stay two stray (TSTS) on students' mathematics learning outcomes. This research is a quantitative study with an experimental method. This research was conducted at SMPN 3 Banjarsari in the 2025/2026 academic year. The population in this study were all students of grade VII divided into three classes. The sampling technique in this study was the probability Sampling technique with the cluster sampling method, so that class VII A was the experimental class and class VII B was the control class. The instrument used was a test, conducted Pretest and Posttest. The results of this study obtained t count = 2.972 and t table = 2.687. Because t count > t table (2.972 > 2.687), then H0 is rejected and H1 is accepted. So it can be concluded that there is an influence of the cooperative learning model type two stay two stray (TSTS) on students' mathematics learning outcomes.
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