This study aimed at investigating the influence of using the instructional software in the performance of the ninth grade students in Mathematics in comparison with the traditional method. The sample consisted of (82) male and female students from Irbid educational governorate schools, and was distributed randomly into two groups: the experimental one included (41) male and female students and was taught by using the educational software; whereas the controlled group consisted of (41) male and female students and was taught by using the traditional method. The results indicated that there were statistically significant differences related to teaching method in favor of the experimental group. Also, there were no statistically significant differences due to gender and interaction between the method and gender. The study recommended that it is necessary to have a comprehensive and complete plan to use the computer and the instructional software in both teaching and training, and to provide human and adequate equipments resources.