Developing the Mathematical Skills among Sample of Down syndrome by Education Technology
The purpose of the current study is to know the influence of a program based on education technology in developing mathematical operations (subtraction and addition operations ) for a sample of (50) male and female students of Down Syndrome in the National Association for Mentally Disabled.  The method used in this study is the quasi-experimental approach and a computerized program had been promoted to develop e the mathematical skills. The results indicated that the effect of this program on the members of the sample were for the benefit of the experimental group. Furthermore, there were statistical significance differences (?=0.05) attributed to gender in favor of females. On the other hand, the results of the study showed the absence of statistical significance differences (?=0.05) attributed to the effect of the interaction between the program and gender in the skills of addition and subtraction besides the impact of gender. Key words: Education technology program, mathematical skills (add, subtract), Down syndrome.