Proposal of an experimental strategy to introduce relativity in elementary physics courses

This contribution shows that the main topics of Relativity can be discussed at an elementary level and in a considerable extent - including the formal results of "Time Dilation" and "Lorentz Contraction" - by a minor modification of the usual mathematical formalism employed to describe uniform and accelerated motion. The proposed strategy begins with a "free-fall" experiment, followed by a discussion of the results in order to include deviations of the experimental data with respect to the conventional kinematics model.