Describes a resonance apparatus for the measurement of Cp/Cv for different gases. In the apparatus a magnetically supported piston in a vertical cylindrical glass tube containing the gas is forced into oscillation by means of a standard audio signal generator. (Author/GA)

Investigated is the period of a simple pendulum. The cases of the rigid rod and fexible cord are reviewed. By applying a variational principle it is proven that the first order correction to the period is the same for both the cord and the rod. (GA)

Describes a system of small electronic modules suitable to teach digital electronics, construct digital systems for the instrumentation of standard experiments, or, teach analog electronics. Explains both the design of the modules, and some of the instructional uses of the system. (GA)

Describes simple modifications that will permit external triggering of certain electronic timers, thus allowing their use in experiments which require greater precision than was possible with inexpensive apparatus. (GA)

Eight steps are outlined for presenting a combined science/language experience unit to primary students, in which the children observe and discuss a phenomenon and dictate a group report. Sample projects with fossils, magnets, and air pressure are described. (SJL)

Describes, using "nonorthogonal" displacement functions, the normal-mode motions of a massive particle and a spring of non-negligible mass to whose end the particle is attached. The results lead to the complete solution for the general motion of the spring-plus-particle system. Shows that the presence/absence of gravity is irrelevant to the…

Describes a simple experiment for measuring the speed of sound using a partially filled beer bottle as a resonator. Outlines and discusses the approximations made in arriving at the procedure. (GA)

Discussions from the conference on "The Use of Animals in High School Biology Classes" are highlighted in this article. The list of science fair rules, which resulted from the conference, is included. (SA)

A demonstration is described that encourages students to engage in inquiry in biology. Using chemicals and an overhead projector, the instructor can simulate a living organism projected onto a screen. The reaction can aid students in defining the characteristics of life. (SA)

Ideas related to including ethology in high school biology programs are given. The methods of ethology and tips on how to communicate observations are briefly explained. (SA)

This paper, presented at the conference on the role of the laboratory in physics education which was held in Oxford, England in July 1978, describes how a Malaysian University has presented electronics and the laboratory work as a forced component in physics curriculum. (HM)

Described is an advanced undergraduate laboratory experiment in which radio-frequency transitions between molecular hyperfine structure states may be observed. Aspects of the quantum theory applied to the analysis of this physical system, are discussed. (Authors/BT)

This experiment is intended as a classroom demonstration. It describes the preparation of materials, the procedure, and a few remarks related to demonstrating travelling waves of chemical activity in the Zaikin-Zhabotinskii-Winfree Reagent. (SA)

Describes seven creative laboratory activities appropriate at any grade level (K-12) that stress the method and spirit of scientific inquiry. (CS)

Recommends a constructivist approach to physics laboratory activities to make laboratories a place for personal maturation and cognitive growth. Describes class design in which ideas and techniques are exchanged which allow students the opportunity to initiate investigations based on early conceptual assumptions, and extend the investigation…