Presents 26 activities, experiments, demonstrations, games, and computer programs for biology, chemistry, and physics. Background information, laboratory procedures, equipment lists, and instructional strategies are given. Topics include eye measurements, nutrition, soil test tube rack, population dynamics, angular momentum, transition metals,…

Presents: (1) method for tuning sonometers with a VELA and sensing device; (2) computer simulation of two-dimensional gas diffusion; (3) inexpensive procedure for digitizing with better than 0.5mm precision (with program listing); and (4) a simple optical diffraction analogue apparatus for use with the laser. (DH)

Discusses various types of transducers and explains the use of a photoresistor in sensing light. Describes various hardware and software combinations which can be used with photoresistors in science laboratory experiments. Presents general applications of this instrument in light-meter, solarimeter, and colorimeter experiments. (TW)