A technique is presented which utilizes wax moth larvae in a laboratory investigation of an insect virus. Describes how an insect virus can be used to introduce undergraduate biology students to laboratory work on viruses and several virological concepts. (SA)

Describes a rapid staining technique for investigating the anatomical expression of two recessive genes. The demonstration is intended to stimulate students who are interested in the practical applications of genetics. (Author/SA)

Suggests that instructional goal structures (cooperative, competitive, and individualistic) may promote three major goals of engineering education: technological, interpersonal, and social-technical competencies. Reviews research on instructional goal structures, appropriate use for all three structures, and establishing a cooperative structure.…

Describes the author's experience with a model structure used to demonstrate the difference between the idealized behavior predicted by theory and the actual behavior of a real structure. The model is a truss bridge with a span of 1.5 meters. (Author/SK)

Mechanical properties (stress-strain relationships) of polymers are reviewed, taking into account both time and temperature factors. Topics include modulus-temperature behavior of polymers, time dependence, time-temperature correspondence, and mechanical models. (JN)

Demonstrates how the incorporation of relatively low amounts of ionic material into nonionic polymers affects the structure and properties of these polymers. The extent to which properties are altered depends on dielectric constant of the backbone, position and type of ionic group, counterion type, ion concentration, and degree of neutralization.…

Reviews the accomplishments in physics previous to 1931 and compares them to accomplishments during the past 50 years. (JN)

Illustrates various ways to adapt commercially or teacher-prepared teaching aids to accommodate the needs of visually impaired students while retaining usability by sighted students. Focuses on tactile changes involving, for example, cutout figures, raised surfaces, and punched holes. (DC)

Provides information about and suggestions for using orbital satellite-carrying amateur radio (OSCAR) and National Oceanic and Atmospheric Administration (NOAA) satellites for instructional purposes. (JN)

Presents background information on and instructions for constructing a Hero's water fountain. Includes photographs of the apparatus from old textbooks and one in the collection of the National Museum of History and Technology at the Smithsonian Institution. (SK)

Background information and procedures for demonstrating physical phenomena to groups are described: a red plastic sheet that changes to blue, a group activity for understanding energy transfer, and hanging a spoon from one's nose to illustrate forces involved in static equilibrium. (SK)

Describes some scientific concepts illustrated by and sources of Sterling engines. Includes an elementary version of their theory. (JN)

A general strategy and specific examples for demonstrations in large physics classes are given. Such "action" demonstrations may involve students moving around the class to demonstrate molecular behavior in different states of matter, and effect of heat in changing state. (JN)

Outlined are procedures for using satellites including the mechanics (plotting satellite positions and obtaining readable signals) and secondary and college activities (using Oscar 8 data telemetry, obtaining weather pictures, using a computer). (DC)

A general discussion of prediction and the use of models as a means of understanding reality is provided, focusing on the application of mathematical models to various scientific disciplines and its role in experimentation. (DC)