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. 2014, 3, 772-781.