This paper presents the educational software Vest21 Mechanics, destined to the high school. The whole content of the Mechanics was divided in 19 lessons (theory and tests with animations), adapted for presentation in data show. Besides the lessons, the software has several tools for the solution of problems, it contains several tests and also a specific program for graphics. The software was used in two courses of Mechanics offered inside of the "Pró-Ciências PB 2001" and the evaluation done by the teachers in improvement was quite positive.
