TY - JOUR AU - Pak Oskouei, Farah AU - Yari, Jahangir TI - The Effect of Teaching Math through UCMAS Method on Mental Development of Children Aged 5 to 12 in Tabriz JO - Journal of Instruction and Evaluation VL - 9 IS - 33 SP - 105 EP - 121 PY - 2016 DO - ER -