For sound demonstrations, you might want to consider my two CDs 'Musical illusions and Paradoxes' and 'Phantom words, and other curiosities' (http://philomel.com). These have worked very well for me, and also for others teaching courses on sound perception and cognition, at both the undergraduate and the graduate level. They include some full experiments that the students could carry out as class projects. Some of the demonstrations are posted at http://philmel.com, with additional background material posted at http://deutsch.ucsd.edu.
On Jan 3, 2012, at 11:58 AM, Sandra Guzman wrote: