@article{
  author = {Ababaf, Zohreh, Pashasharifi, Hasan},
  title = {A  Comparison between Metacognitive Knowledge of Solving Problem and Primary School Students’ Level of Academic Achievement, Grades,and Sex},
  journal = {The Journal of Modern Thoughts in Education},
  year = {2009},
  volume = {4},
  number = {2},
  pages = {132-118},
  doi = {}
}