Four means of altering fat levels in laboratory mice, contrasting invasive injection techniques with non-invasive dietary and behavioral means, are described. Relates these investigations concerning obesity to the practicality of using animal models as an approach in searching for physiological knowledge about human beings. (CS)

Supports the importance of selecting science activities for middle school students that are appropriate to their age level. Lists a variety of resources for science activities, including 11 unit guides, three source books, four journals, and professional meetings. (CS)

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

Discusses an addition to an apparatus which allows the effect of temperature on a paramagnetic compound to be measured, therefore demonstrating the Curie-Weiss law. The experiment can be used as a demonstration or student experiment to stimulate discussion of magnetic susceptibility and ligand field trips. (Author/JN)

Summarizes representative research relating to the critical role of attention in concept formation in science. Topics discussed include curing, manipulation of symbols, and directions for focusing attention on particular aspects of concepts. (Author/DS)

Presents three different procedures in which reagents are added in a specified order to a large beaker containing an aqueous solution of nickel sulfate. Complex ions of nickel (II) are prepared by using aqueous solutions of ammonia, ethylenediamine, dimethylglyoxime, and cyanide ion. (CS)

Presents activities to be used by a class of fifth graders on a field trip to a stream. Photographs illustrate the techniques and the setting described. (HM)

Presents an experiment for inorganic, organic, or physical chemistry students utilizing acid-base titrimetry to study the stoichiometric of a solid state reaction. Time involved ranges from one to three, three-hour lab periods. (Author/SA)

Ideas are given for including fungi in classroom activities for high school biology students. A discussion on the science of taxonomy leads into a discussion on the position of fungi in the five kingdom classification scheme of organisms. Suggestions are given for observing their growth and development. (SA)

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)

Outlines an approach for instruction in a physical chemistry laboratory which combines traditional and project-like experiments. An outline of laboratory experiments and examples of project-like experiments are included. (BT)

An experiment is presented on the formulation of a negative photoresist. It is intended for use as a fifteen minute classroom demonstration for undergraduate general chemistry students. (SA)

Presents a rationale for teaching a course to high school students on the influence of science and technology on society. Bioethics and food, and world hunger are two of the topics included in the course outline. References are given for simulation games, readings, and audiovisual materials. (SA)

The material presented in this article is intended to help students learn how to learn. The seven key concepts of David Ausubel's assimilation theory for cognitive learning are discussed with reference to the classroom. Concept mapping is suggested as a tool for demonstrating how the seven key concepts function. (SA)

Describes a summer science program for suburban upper-elementary and junior high students. The students are involved in field ecology experiences including stream studies, fossil collecting, and dissections of organisms. (SA)