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)

Presented are 29 science activities for secondary school science instruction. Topic areas include botany, genetics, biochemistry, anatomy, entomology, molecular structure, spreadsheets, chemistry, mechanics, astronomy, relativity, aeronautics, instrumentation, electrostatics, quantum mechanics, and laboratory interfacing. (CW)

Described is the construction of a simple analog-to-digital convertor circuit to interface an Apple II+ microcomputer to a light sensor used in conjunction with a holographic gear inspector. A list of parts, circuit diagram, and a simple BASIC program for the convertor are provided. (CW)