Investigates the relationship between knowledge of geometrical optics and the understanding of the phenomenon of colored shadows through adult interviews. Reports that the knowledge of geometrical optics facilitates the pinpointing of the color problem while experience with the mixing of paints may act as a barrier. (Author/YP)

The nature of cluster analysis and dendograms, subjects, tasks, and results of this study are described. Categories for problems were based on assumptions about the methods used by novice and expert problem solvers in a physics context. (CW)

Discusses experiments with students and teachers in a project to encourage girls to achieve their full potential and to consider nontraditional career choices. Describes a two-week practice program and opposition to the project from teachers and girls. Outlines an extensive course in physics and effects of the course. (YP)

Described is a science activity which illustrates the principle of uncertainty using a computer simulation of bacterial reproduction. Procedures and results are discussed. Several illustrations of results are provided. The availability of a computer program is noted. (CW)

Discusses some incorrect representations of electric fields in textbooks. Considers total charge or charge density and two- or three-dimensional diagrams. (YP)

Presented is a review of important science news stories of 1989 as reported in the pages of "Science News." Topics include anthropology, astronomy, behavior, biology, biomedicine, chemistry, environment, food science, math and computers, paleobiology, physics, science and society, space sciences, and technology. (CW)

Directions for the construction of an electronic version of an electroscope are provided. Demonstration and operation of this apparatus is discussed. A list of components and a schematic diagram are provided. (CW)

Describes three activities: "Solar Approach to Ohm's Law," dealing with the Ohm's law and the inverse square law; "Using LED's to Demonstrate Induced Current," showing Faraday's law and Lenz's law by using light emitting diodes (LEDs); and "The Helium-Filled Organ Pipe," discussing a discrepancy between theory and experiment. (YP)

Describes a lesson which integrates thinking, writing, and physics. Provides examples of student involvements, a list of typical topics, and additional notes to the teacher. (RT)

Reviews three computer software packages: "Mystery Objects," a science inquiry series for grades one-four; "Physics," covering physics content for high school and introductory college level; and a tutorial program "Sensei Geometry." Required hardware, price, and addresses for each software package are listed. (YP)

Describes a demonstration which allows students to witness a type of continuous spectrum and an absorption spectrum. Provides a diagram and explanation for the construction of an absorption box. (RT)

Discusses the origin of the catastrophic event as to whether it was an episodic process or of extraterrestrial or endogenous origin. Develops a model of a volcanic mechanism to produce shocked quartz like those found in the Deccan basalts. (MVL)

Describes a method for making holograms viewable in white light without the problem of vibrations. Presents diagrams which show the arrangement for construction, viewing procedures, and a device for generating holograms. A list of supplies is included. (RT)

Discussed is the change and diversity of scientific information. States goals of future science education: motivation, search, principles, information, orientation, world view, and creativity. Lists the orientational skills of science education. (YP)

Reviewed are 15 studies on cognitive style and problem solving in science education. The effects of problem context, problem type, and three kinds of cognitive style on subjects' abilities to encounter and solve problems are investigated. Three protocols of the subjects' encountering activities are provided. (YP)