Describes three experiments to demonstrate several aspects of artificial radioactivity. Metal foils were activated, using slow neutron bombardment. (GA)

Describes a simple method for measuring the heat of vaporization of water, which gives results within five percent of the accepted value. (GA)

Describes an experiment for measuring the lifetime of the 60-keV state in 237-Np which is populated in the alpha decay of 241-Am. The technique used is the delayed coincidence method using a time-to-pulse-height converter. (Author/GA)

Discusses two different uses of information theory in chemistry to present entropy and chemical structure analysis. (GA)

Experiments and demonstrations are presented which have been used in a high school course on animal behavior. Animals used include spiders, fish, birds, and mammals. (BB)

This article tells how to prepare and use frog leg bones in the classroom. (BB)

A method is described for preparing large gelatine-embedded soil sections for ecological studies. Sampling methods reduce structural disturbance of the samples to a minimum and include freezing the samples in the field to kill soil invertebrates in their natural microhabitats. Projects are suggested for upper secondary school students. (Author/BB)

Explains a way to determine the age of a turtle, how to care for them and what to feed them while in temporary captivity. (GA)

Urges the use of the immediate environment of the school to serve as a focus and a medium to help plan activities and experiments in the different subject areas of science, and in the area of environment. (GA)

Describes several activities that can be done with laboratory mice to study the physiological role of oxytocin. Diagrams included. (MA)

Explains some of the ways in which dried yeast has been used in sixth-form work to illustrate some points and principles relevant to a high school biology course. (Author/GA)

Describes an experiment that has been introduced in the organic chemistry laboratory program at Shepherd College, Shepherdstown, West Virginia. It illustrates microbial reaction and its role in the synthesis of vitamin C. (HM)

Presents a biochemistry experiment for college students that illustrates the purification of an enzyme. (HM)

Describes methods of making fossil models in the classroom. Step-by-step directions, as well as discussion questions, are given. A film and filmstrip is included. (MA)

Reproduces the contents of a CEEP instructional module on the concept of radioactive decay. Includes objectives, materials, procedure, and summary questions. Reproducable illustrations also included. (MA)