Shandy, D. N., Widayati, W., & Zainnuddin, M. (2017). The improvement of social science learning outcomes about cooperative through two stay two stray model on students in Class IV, SDN I Karanganom, Tulungagung. Journal of Social Sciences (COES&Amp;RJ-JSS), 6(3), 481–490. https://doi.org/10.25255/jss.2017.6.3.481.490