Advocates the development of a "resource directory" of local industries by a school district. The directory could list the names of industries which would provide: (1) tours; (2) speakers; (3) the use of specialist equipment and laboratory facilities; (4) the use of libraries; and (5) personal links for teachers. (CP)

An elementary method based on classical Green's functions for the calculation of the momentum autocorrelation function for a harmonic oscillator and a damped harmonic oscillator is presented. (BB)

A phase catalyst approach to nucleophilic and electrophilic reactions is proposed. (CP)

Provides an empirical analysis of the specificity and efficiency of reactions based on the Hard and Soft Acids and Bases (HSAB) principle. (Author/CP)

Presents a comprehensive tabulation of experimental hydration enthalpies for unstable ions. (SL)

Analyzes the sudden drop in the isothermal entropy of mixing when two ideal quantum gases are made identical. (Author/SL)

Introduces the concept of mutual inertia, analogous to mutual inductance, through the study of oscillations in a periodic linear chain of particles, on an air-track, joined by loaded strings. (SL)

Reviews the historical development of concepts of motion from the time of Aristotle to Newton. (SL)

Reviews new instruments, new literature, and new chemicals advertised in this issue of their journal. (SL)

Reviews responsibilities for persons using chemical substances which are potentially harmful. (SL)

Includes methods for determining melting and boiling points, illustrating the Finkelstein reaction, choosing acid-base indicators, growing perfect NaC1 cubes and "whiskers," bromination of alkenes, using vanadium in the laboratory, preparing phenylamine-copper (II) sulfate (VI) complex, simulating first-order chemical kinetics on a programmable…

Includes methods for demonstrating Schlieren effect, measuring refractive index, measuring acceleration, presenting concepts of optics, automatically recording weather, constructing apparaturs for sound experiments, using thermistor thermometers, using the 741 operational amplifier in analog computing, measuring inductance, electronically ringing…

Includes methods for using harmonographs in demonstrating motion of pendulums, constructing an electrostatic "bell," inverting mirror images, demonstrating the corrosion rate of steel, demonstrating expansion, studying rate of reaction between magnesium and hydrochloric acid, using matchboxes in science for containers, problem boxes, building…

Described is the life cycle of the cellular slime molds Acrasiales. Experiments that can be used to explore the aggregation, migration, and culmination activities of the organism are suggested. Laboratory procedures for culturing these slime molds and listings of biological supply houses and literature references are also given. (MA)

This article reviews the Exploring Science elementary series by Laidlaw Brothers. Evaluation is on the basis of content, format, program features, student evaluation, and teachers' edition. The program is a blend of traditional and new hands-on activities. Emphasis is more content than process oriented, especially in the upper grades. (Author/MA)