Presents an easily performed experiment to determine sucrose concentrations using a laser and a hollow glass prism. The experiment is suggested for high school, freshman college, and instrumental analysis classes. Notes an Erlenmeyer flask can be used instead of a prism. (MVL)

The Dartmouth Medical school initiated a course to meet the needs of the future physician who would be able to critique the scientific basis of medicine. For physicians, clinically relevant problems might require computer-assisted decision analysis, expert systems, statistical computing, or relational database development. (MLW)

Described are five activities using crayons to demonstrate the rock cycle including weathering, erosion and sedimentation, and sedimentary, metamorphic, and igneous rock formation. Discussed are materials, procedures, and probable results. (CW)

Described is an exercise which examines the effect of reading aloud a technical passage of science material while the heart is monitored by a computer. The experimental setup, design, and data analysis are discussed. (CW)

Described are two activities designed to help children investigate electrical charges, electric meters, and electromagnets. Included are background information, a list of materials, procedures, and follow-up questions. Sources of additional information are cited. (CW)

The impact and uses of new technologies in science teaching are discussed. Included are computers, software, sensors, integrated circuits, computer signal access, and computer interfaces. Uses and advantages of these new technologies are suggested. (CW)

The apparatus, reagents, preliminary classification, nomenclature, acquisition, and procedures used in the identification of synthetic polymers are described. Specific tests for the identification of the presence of hydrocarbons, chlorine, fluorine, sulfur, and nitrogen and the absence of halogens and sulfur are discussed. (CW)

Describes science activities which use simple chemical tests to distinguish between materials and to determine some of their properties. Explains the water, iodine, heat, acid, baking soda, acid/base indicator, glucose, and sugar tests. Includes activities to enhance chemical testing and a list of suggested powders for use. (RT)

Investigates a case study in the state of Qatar to find the interaction effect between an engineering laboratory and the community. Presents the results of two questionnaires for faculty members and engineers. Reports awareness and willingness to participate in a cooperative program, current lack of communication and inadequate laboratory…

Provides the methodology put forth by Moore and Kraus to separate Co++ from Ni++ in an 8M HCl solution. Notes that cobalt(II) forms a wide variety of anionic complexes. Points out that as the solutions leave the exchange column the color bands of green, blue, and pink are easily seen. (MVL)

Reviewed is some of the experimental evidence for apostatic selection from work with artificial prey. Guidelines for further experiments are suggested including experimental design, analysis, variables, and selection in the wild. (Author/CW)

Presents a method which introduces biology students to some fundamental aspects of scientific methodology. Explains simple muscle testing procedures, a historical perspective, experimental variables, pedagogical uses, and possible mechanisms of the muscle response phenomenon action. (RT)

The ideas behind electrophilic addition to alkenes, and electrophilic substitution in benzene derivatives are discussed. Teaching these concepts to secondary school students is stressed. Five main points useful at this age level are summarized. (Author/CW)

Findings are presented from a study of the effectiveness of a training program designed to increase nonverbal expressiveness, during expository teaching/lecturing, in the nonverbal channels: voice delivery, eye expression, gaze, facial expression, gesturing, posture, and movement. The program includes laboratory practice sessions, characterized by…

Describes a variety of approaches for forming partnerships among high schools, universities, and industries for solving the problems that face precollege science education. (YP)