Most students especially at the secondary school level have little or no interest in the subject ‘Mathematics’. Mathematics teachers have sought for better ways to present the subject so as to captivate the interest of students in order to improve their performance in Mathematics. In this paper, the study on the assessment of multimedia technology method of teaching Mathematics in secondary schools was carried out in Abuja using a public and private secondary school at different locations. The students were taught using the multimedia technology method and the traditional chalk and talk method. The students taught with the multimedia method were termed the experimental group while the students taught with traditional method were termed the control group. Questionnaires were being distributed to the students to fill after which a post-test of the same questions was administered to the students. The responses from the questionnaire were analyzed using frequencies and percentages to find out the method of teaching the students preferred most. Also, the analysis of the post-test result with a paired sample t-test clearly showed there was a significant difference in the mean scores of both teaching methods. The multimedia technology teaching method impacted greatly on the interest and performance of the students in Mathematics.