The Greek mathematician, Pythagoras, was among the first to undertake a mathematical study of music. His work, resulted in a scale of notes which can produce beautiful melodies and which is easily reproduced in the elementary classroom. In an age when teachers look for an interdisciplinary connection between various aspects of the curriculum, in a day when parents demand much in the way of basic computation, and at a time when students insist on a dazzling presentation to be motivated, Pythagoras' observation and experimentation can provide students with an interesting and all-encompassing utilization of mathematics skills and an inductive approach to learning. Suggested activities include construction and use of a monochord (stretched guitar string), and a "woodwind" prepared from a paper soda straw (as an entertaining drill in fractions). Through measuring, mathematics, and music, these and other activities give students enjoyment, participation, appreciation, and the understanding of the interrelationships of the concepts of mathematics to objects from the real world of their experience. (JN)