  This article describes an implementation of low-cost portable touch screen
technology, applied to university teaching, using as a base the remote control
of the Nintendo Wii console (known as Wiimote), a normal projector, a computer
and free software. The purpose is to show the feasibility of such
implementation to improve teaching/learning processes, without incurring high
costs associated with unaffordable technological equipment, special
infrastructure in classrooms, or expensive computer programs. Also included is
a summary of a test of the system in two college courses.
