@article{
  author = {Taqvi, Mohammad Rafi , Kivan laghab, Tahereh,  Golestani, Mahbube},
  title = {The effect of collaborative learning (Jigsaw) on the social skills of sixth grade male students in Yasuj city},
  journal = { Environmental sciences and geography knowledge},
  year = {2021},
  volume = {1},
  number = {2},
  pages = {-},
  doi = {}
}