This study aimed to investigate the effectiveness of using Mozabook software to acquire circle concepts among tenth-grade students and their motivation to learn mathematics. For the purpose of the study, the researcher prepared a teacher manual to teach the circle unit using Mozabook for grade ten students. In addition, a test was developed to measure students understanding of mathematics concepts in the same unit. The test was piloted and checked for validity and reliability. The study sample consisted of 63 basic-tenth-grade students in Al-Batinah North Governorate who were divided into two groups; First, an experimental group consisted of (32) students which was studied using Mozabook; Second, a control group consisted of (31) students which was studied in the ordinary way. The study ended with the following results: - The study showed a statistically significant difference at the significance level (α = 0.05) between the degrees of the experimental and control group students on the post-test of acquiring circle concepts in favor of the experimental group average. - The study showed a statistically significant difference at the significance level (α = 0.05) between the degrees of the experimental and control group students on the post-test of measuring students' motivation for learning mathematics in favor of the experimental group average. In light of the conclusions above, the researcher recommended using Mozabook software and putting it to use for teaching mathematics in general and circles in specific given the great positive results shown by the study in acquiring the circle concepts for students.