سارا ماشينچي ماهري

Abstract ‎“Language Teaching” is one of the most important tools for teaching and learning. The purpose of this research ‎is to increase and enhance the learning and memorizing in the Persian language by enhancing orthography and ‎reducing the spelling mistakes in mentally retarded students. This research is field research that measures the educational requirements and ‎recognition of mentally retarded children. For doing this study, ‎first, designing the material of this study, then sampling group divided into two groups of experimental and control. Members of sample group are 30 female of mentally retarded students at Shahid Aslani school in Tehran. The effectiveness of current study on improvement in learning and reminding of the ‎alphabet and reducing the spelling mistakes is the aim of this study.‎ Sampling was done in a tentative manner and data estimating with “diagnostic reading test” and “educational assistant ‎equipment.” These conclusions result in t-test in SPSS software.The result shows that learning and ‎reminding with educational assistance equipment possesses a positive significant impact ‎(ρ<0.05) ‎on recovering the alphabet learning and training on examination group. This result derives that education with suitable educational assistant equipment that designing for this groups of ‎children attend improving the learning and reminding in these children and impacting on the facility of instruction also. Key words: Exceptional children, mentally retarded children, teaching material, reading and writing, Assistive technology