%0 Journal Article
%A Dadsetan, Parirokh, Vahidi, Laleh, Shaghaghi, Farhad
%T Dddition operation strategies in first grade students:an empirical study
%J Journal of Developmental Psychology Iranian Psychologists
%V 7
%N 26
%P 111-121
%D 2010
%R 
%U https://sanad.iau.ir/fa/Article/1054556