Mahigir A, Jafar Rezaei M, Zareei A, Mahigir F, Keshavarz M. Work content analysis of thinking and research in terms of attention to teaching sixth grade lippmann thinking and evaluation of teachers’ expert. Sci. J. Rev. [Internet]. 2014Jul.25 [cited 2026May2];3(7):772-81. Available from: http://www.sjournals.com/index.php/sjr/article/view/490