Abstract
One of the biggest difficulties faced by teachers, nowadays, is the lack of interest from students in math’s programmatic contentes, wich, plenty of times, is reduced to a set of techniques, rules and algorithms without applicability or justification. This research’s objective is to investigate and analyze some possible contributions to mathematical functions’ teach-leraning using, as methodological approach, the resolution of math problems/ investigation utilizing a treasure hunt game, relating mathematical functions theory to the idea of cryptography, wich is part of the students’ routine.