How to use digital technology to teach the logarithmic function

summary:The article deals with the introduction of logarithmic function with the help of GeoGebra and Derive 6. A teaching experiment is described in which pupils reached the concept of logarithmic function by solving a carefully selected series of problems. Each problem is complemented by a solution and comments about the way it was solved by pupils with the help of software. The whole process ended with the definition of logarithmic function and a series of problems in which pupils were to discover its properties