Describes making laboratory apparatus such as a heavy-duty turntable; a hand-held milk-carton accelerometer; an inverted air table; free-fall measurement with a solenoid as a starting device; and a bright point source. Presents an evaluation of "The Champ Universal Interface and Sensor Pack Software." (YP)

Reviews "Vernier Software: Precision Timer II" for high school through college mechanics. Introduces 14 different modes including pulse time, pendulum timer, bouncer timer, gate timer, collision timers, and stroke calibration. Provides two typical displays and ratings of the software. (YP)

Compares the features of the sonic rangers available from HRM Software, MICROMEASUREMENTS, NAGAWTIS Software Research, and PASCO Scientific for demonstrations and experiments in mechanics. Presents the advantages of the sonic rangers and the typical graphics displayed by each software package. (YP)