Background and Objectives:    Multimedia software with its various features, including videos, interactive images, simulations and other graphic tools, are widely used in the field of learning and education. Math lesson is also one of the fields where the use of these softwares can help to improve the learning process and understanding of its concepts. Since mathematics lesson is often known as one of the complex and difficult topics, using multimedia tools can make the learning process more attractive and efficient. The study aimed at examnining the impact of multimedia software on the learning of mathematics among high school students in district 2, Sari.
Methodology:   This research was done with a descriptive-survey method. Its statistical population consisted 164 people (70 women and 94 men) who are mathematics teachers in Sari schools in 2019. The sample size was 102 people (44 women and 58 men) using the Karjesi and Morgan table, and this number of samples was determined by stratified random sampling. The data collection tool included a researcher-made questionnaire consisting of 30 closed questions for the variables of increasing the speed of learning, meaningful learning, accuracy of learning, interest in solving problems and interest in explaining students' mathematics lesson problems. The validity of the tool has been confirmed by supervisors, consultants, specialists and experts in the field of educational planning and psychology, and the reliability of the tool has been estimated at 0.92 using Cronbach's alpha method. In order to statistically analyze criteria such as frequency by number, percentage, graph, Kolmogorov-Sminov test was used to determine the normality of the variables and the t-test was used to reject or confirm the hypotheses.

Results:    The results of the t-test showed a positive and significant relationship between the independent variable of multimedia software and the dependent variable of students' mathematics learning.
Conclusion:    Multimedia software usually provide facilities for active interaction of students. These features include interactive exercises and tests, educational games, and other interactive tools that help students understand math concepts in a more active and practical way.