The author explains how music broadcasters codify musical selections by mood, tempo, and instrumentation, then arrange a sequence designed to maintain audience interest with a variety of listening experiences. Similar techniques are suggested for planning school concerts. (SJL)

Introduces college level geography students to the International System of Units (SI), a standardized set of units used in science, engineering, and commerce. Identifies the SI base units as meter, kilogram, second, kelvin, ampere, mole, and candela. Includes geographically relevant examples of each. (MJP)