List of Articles مفاهیم پیش از عدد ریاضی Open Access Article Abstract Page Full-Text 1 - The Study investigates the effect of using educational softwares on learning the concepts of pre-mathematical number of pre-school children of Tabriz Zeynab teymori Open Access Article Abstract Page Full-Text 2 - The educational toys effect on learning rate of premathematical number concepts in preschool children of Tabriz in 85-86 Farkhondeh Mofidi Zeynab Teymoori