Presents a computer program that uses radial and transverse star movements to make approximations of the closest approach in light years. In addition using the present actual visual magnitude the greatest magnitude attained is calculated. (Author/GS)

Describes 20 teaching activities and experiments appropriate for use with various secondary school science classes. Instructional activities include the study of catalase, raising bees, a game about equilibrium, spectrometers, lead iodide, resonance, graphing, and electromagnetic waves. (TW)

Explores several options and advantages of using microcomputers in science teaching. Describes programs for calculating pH, Maxwell-Boltzman distribution of velocities in a gas, atomic orbitals, and lattice energies. Also suggests use of microcomputers in the areas of simulations, scoring tests, and controlling stock. (DS)

Described is a computer program that, by means of a simple motor task, provides a context that enables students to learn about motor coordination. The effects of alcohol, drugs, or solvents on the motor task can be investigated using a delay in the feedback loop. A description of the hardware and software is included. (KR)

Examined are applications of computer spreadsheets from simple record/observation tables to custom built analysis systems. The advantages and disadvantages depending on the use of these software packages are discussed. Several examples are used to illustrate possible applications. (CW)

Contains 21 articles ranging from instructional experiments to topical information. Deals with investigation of plant rust diseases, using computers to teach biology, plant roots, a biotechnology curriculum, the corrosion of oxides, electrochemical simulations, the Reimer-Tiemann reaction, the oxidation of aldehydes, and the extraction of iodine…