The aim of this study was to determine how 5-year-old children identified the functional relationship of correspondence, and whether or not they generalized when working on a task that involved programmable robots. We conducted this study with 15 children (9 girls and 6 boys) in their last year of preschool education. The study was designed around a generalization task that involved the function f(n)=n+2. Our findings indicate that nine of the children identified the correspondence relationship and five children generalized, three of them correctly.