IRCT2016042717134N3 IRCT 2017-03-05 university of Tehran Evaluation of the Effectiveness of Pre-math Training and Executive Function Math Achievement Developing and Evaluating of Executive Function and Premath Skills Training Programs for Preschool Children at Risk of Mathematical Difficulties 2016-01-21 anticipated 160 Complete https://irct.ir/trial/15830 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention. N/A Learning disability. Intervention 1: Participants of intervention group will receive three different arms of intervention including: Arms one: Subjects will undergo the Maghzine, computerized executive functioning training with game elements, for 24 sessions over the span of 6 weeks. Each session will take 30-minute to complete. In addition to the Maghzine, the intervention group will play cognitive training games aimed at increasing working memory and inhibition skills. Intervention 2: Arms two: The intervention activities mainly were selected from three evidence based math curriculum. Lessons addressed teaching of shapes, space, algebraic thinking, geometry, counting, measurement, comparison, classifying and basics operations with worksheet, manipulative and computer-based activities matched with the designed curriculum. The intervention program included twenty-four sessions of math instruction carried out every day, five days a week in small-group formats. Intervention 3: Arms three: combination of pre-math training and executive function training. Intervention 4: Control group: will attend the routine preschool education including basic math training, art, music and English language.