Thomas G. Barnes, geologist/creationist, argues that the geomagnetic field was created by unknown processes when earth was created and has been decaying (irreversibly/exponentially) with a half-life of about 1,400 years since then. Shows that Barnes' proposition is wrong and explains why the earth's age cannot be determined from magnetic-field…

Assesses Scientific Attitude Inventory (SAI) by examining the instrument and 30 studies in which it has been used. In addition, shows how conceptual analysis may be used to investigate validity of a research instrument. Indicates that SAI needs reworking since it is less than certain of what is being measured. (Author/JN)

Discusses determination of elliptical path of a satellite caught into orbit by the sun or earth; using microcomputer as signal generator (includes program listing); collision process; simple hysteresis loop using double beam CRO; method of demonstrating parallelogram of forces; measuring radius of electron beam curvature; and half-life of thorium…

Discusses: (1) construction of an integrated spherical reflectometer; (2) limitations of the NOAA Weather Radio Network; and (3) a simple experiment to demonstrate/measure influence of damping force on amplitude resonance. Also discusses whether or not a homemade electrophorus can lose its charge and then recharge itself. (JN)

Lasers are useful for demonstrating ray optics, especially in large classrooms where a well-defined, easily-viewed ray is essential. Described is a simple device that converts any laser to a projection oscilloscope (or laser spirograph). Suggestions for using the device (including demonstrating Lissajous figures and conic sections) are provided.…

Thirteen demonstrations using a capacitor-start induction motor fitted with an aluminum disk are described. Demonstrations illustrate principles from mechanics, fluids (Bernoulli's principle), waves (chladni patterns and doppler effect), magnetism, electricity, and light (mechanical color mixing). In addition, the instrument can measure friction…

Contends that the nature of physics has been misrepresented by blurring or ignoring important distinctions between "errors" and "discrepancies" and that dealing with these and related problems can improve students' enjoyment of labs and understanding of physics. Nature of physics, role of experiments, experimental errors, and error analysis are…

Speculates that physiological changes resulting from repeated, long-term stimulation in human and laboratory animal brains are related to short- and long-term memory processes. Describes a physiological-based model which may explain many current learning theory principles and can serve as a foundation for developing new learning theories based on…

Proposes four specific actions to maintain science education's viability and plan for its future, focusing on scientific literacy. These proposals are based on: (1) an analysis of historical determinants of federal role in education; (2) interpretation of the Reagan administration's decisions influencing education; and (3) projections for federal…

Questionnaires were sent to biology, chemistry, physics, and earth science teachers (N=100) to determine practical problems at the student/teacher/subject matter interface. Responses related to importance of content area for students and difficulty students have in learning the content are discussed. (SK)

Presents the full text of Arkansas Act 590 (1981) requiring balanced treatment of creationism and evolution in public schools of this state. Includes, among others, requirements for balanced treatment, prohibition against religious instruction, requirements for nondiscrimination, definitions of "creation-science" and…

Examines proposition that creationism is legitimate science, including philosophical basis of that claim and methods used to discredit contemporary scientific thought. Discusses creationist's arguments against scientific findings related to second law of thermodynamics, improbability of evolution, earth's age, geological record, fossil transitions…

Describes laboratory procedures, demonstrations, and classroom materials, including "diet poker" (nutrition game); an experiment on enzyme characteristics; demonstrations of yeast anaerobic respiration and color preference in Calliphora larvae; method to extract eugenol from clove oil to show antibiotic properties; and Benedict's test.…

Describes public facilities in the United Kingdom (observatories, planetariums, museums, and research institutes) available for use in astronomy education. (SK)

Describes a chemistry "pre-course" for students entering Rhode Island Junior College. The course is designed to introduce many basic scientific concepts deemed necessary before entering the first college chemistry course. (CS)