This issue contains five texts. It begins with an editorial that is a brief reflection on the importance of the resources available for carrying out mathematical practices in the development of this science. The articles section contains four manuscripts that are three research articles and one reflection article in the area of ​​Mathematics Education. Topics on student practices are addressed, including their learning difficulties and proposals to reduce them, in the areas of Calculus, Geometry and Algebra. There is also an article that reflects on the relationship between Mathematics Education and reflective thinking. The issue closes with the return of the "Mathematics Corner" section, which contains proposals to work on algebraic language at the secondary level (Middle School and High School).