Avaliação de softwares matemáticos quanto a sua funcionalidade e tipo de licença para uso em sala de aula

Due to the wide availability of mathematical software on the Internet, there are some problems such as: identify those who possess or not cost to purchase, check whether a given software provides resources to a particular math content and this is indicated for use in a particular series of education. In this context, this article has as its objectives: to present concepts of various types of software and licenses - for the professional involved