Efektivitas Pembelajaran Two Stay Two Stray Ditinjau dari Pemahaman Konsep Matematis Siswa

Abstract: The Effectiveness of Learning Two Stay Two Stray In Terms of Students' Understanding of Mathematical Concepts. This quasi-experimental study aimed to examine the effectiveness of cooperative learning models of two stay two stray type in terms of students’ understanding of mathematical concepts. The population of this study were all grade eight students of SMP Negeri 1 Pringsewu in even semester academic year of 2018/2019 as many as 151 students who were distributed into five classes. The research samples were students of VIII.4 as many as 32 students and VIII.5 as many as 29 students class which were selected by cluster random sampling technique. The design used was the randomized pretest-posttest control group design. The research data was collected by using essay test on the circle and obtained test data for students’ understanding of mathematical concepts. The data analysis was carried out by using the -test and proportion test. The results of this study showed that the cooperative learning model two stay two stray type was not effective in terms of students' understanding of mathematical concepts. Keywords: cooperative, effectiveness, two stay two stray, understanding of mathematical concept