The importance of examining both the natural history of organisms being investigated and numerical data from long-term field experiments is illustrated by describing a long-running field experiment at an English Field Study Council Centre. Sample results are discussed and alternative methods of using field studies in biology instruction are…

Discusses simplified experiments in which sinusoidal signals are detected when a laser beam is sent into a photodiode. (HM)

Presents a method for teaching high school students about evolution at the genus level as well as at higher taxons. Activities for a laboratory project and laboratory techniques are described. (SA)

A description of the use of experiments used as a teaching strategy in mathematics is given. (MK)

The author describes activities he uses with secondary school science students to learn about their reasoning. (Author/SA)

Describes a slide presentation program for French students at the elementary and intermediate levels, and offers technical and pedagogical advice on using the slide show to assist in the teaching of linguistic and cultural information. (AM)

An inexpensive apparatus for demonstrating low temperature mineral synthesis in an undergraduate geology laboratory is described. (Author/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 the role of the laboratory in school and university physics in Eastern Europe. (HM)

Discusses the history of open-air schools using an evaluation of Belgian schools. Expounds on the complex relationship between educational space and the educational act, and between traditional and progressive education. Demonstrates that open-air schools provided the same education as traditional schools and were not a real alternative for…

Presented are four experiments for use in two wet analysis courses. These include comparisons and enzyme analysis. In each case, the theory behind each experiment is discussed. (CW)

Presents four articles dealing with chaotic systems. Lists sources for nine demonstrations or experiments dealing with self-organization. Provides a vocabulary review of self-organization. Describes three chemical oscillator models. Discusses the role of chaos in flow systems. (MVL)

Discusses a student exercise which requires the optimizing of the charring and atomization temperatures by producing a plot of absorbance versus temperature for each temperature parameter. Notes that although the graphite furnace atomic absorption spectroscopy technique has widespread industrial use, there are no published, structured experiments…

Presents an examination of the buoyancy principle which can serve as a simple but rigorous illustration of a falsification test that not only clears up a possible misconception but also points the way to a number of practical uses of buoyancy measurements that have not generally been recognized. (MVL)

Discussed are selected application and future trends in supercritical fluid chromatography (SFC). The greatest application for SFC involves those analytes that are difficult to separate using GC or LC methods. Optimum conditions for SFC are examined. Provided are several example chromatograms. (MVL)

Discusses the mechanism and the change of pH during the reaction. Notes that a dramatic rise in pH occurs when the reaction nears completion. Evaluates theories by other authors. (MVL)