This study aimed to in investigate the effectiveness of the FluidMath soft ware in terms of acquiring the concepts of Graphic Representations of functions among ninth graders and their Self-Efficacy in mathematics. The semi-experimental curriculum was used, where the study was con ducted on a sample consisted of (66) male students of the ninth grade in a basic education school in South Al Batinah Governorate. They were divided into two groups: an experimental consisted of (33) students who studied the Unit of graphs of functions using FluidMath, and a control group consisted of (33) students who studied the same unit using the usual teaching method with a number of its mem bers (33) students. In order to accomplish the study's goals, the researcher created a guide for teachers and students on how to teach and use the Unit of graphs of functions using FluidMath software. He also created a test for acquiring the concepts of graphs of functions, and its validity and reliability were measured. The researcher also created a measure of self-efficacy in mathematics using educational literature and previous studies, and its validity and reliability were measured. The study reached the results that shows there is a statically significant difference at the level of (α = 0.05) between the mean scores of the ninth graders of the experimental group who studied using FluidMath software and the scores of the control group students who studied in the usual way in the test of acquiring the concepts of Graphic Representations of functions and in the mathematics self efficacy scale in favor of the experimental group. The study recommended the necessity of applying and using FluidMath program in teaching the various subjects especially in geometric subjects, and other Mathematics subjects in general. Based on the positive effects the study had shown on the acquisition of the concepts of graphs of functions among the stu dents.