Low-cost demonstrations in acoustics for high school or liberal arts science courses

Finding effective demonstrations of physical principles that engage student interest, yet are cheap and easy to carry out, is a constant source of challenge to the high school or college science educator. The authors will share a number of such demonstrations which they have developed by drawing on their pooled knowledge of experimental acoustics. Included will be demonstrations developed for a musical acoustics class taught by one of the authors at Penn State University.