The objectives of this workshop are: 1). Train participants in the handling of Input Bar, Views, Spreadsheet, Options menu, Slider, Text, Scroll graphical view, Intersection, Perpendicular and some commands of the GeoGebra Classic 5 program; 2). Facilitate significant learning of the formal concept of limit of a real function at a number and at infinity and, 3). Develop the ability to communicate and represent mathematical ideaswith limit of real functions. Development: We explore the GeoGebra Views, tools and commands that we will use. We present an Activity that contains the intuitive and formal definitions of limit of a real function at a number and at infinity, examples on limit of functions to solve and questions oriented to the intuitive concept and later to a dynamic construction of the formal concept of limit, with GeoGebra support. We proceed in a similar way with the concept li...