@article{
  author = {Mofidi, Farkhondeh, Teymoori, Zeynab},
  title = {The educational toys effect on learning rate of premathematical number concepts in preschool children of Tabriz in 85-86},
  journal = {Journal of Instruction and Evaluation},
  year = {2008},
  volume = {1},
  number = {2},
  pages = {201-222},
  doi = {}
}