Honest errors appearing in textbooks, articles, and instructor-generated assignments are used as meaningful vehicles of instruction. Missing information, corrected printing errors, deliberate errors, and difficult written passages are discussed as sources of errors. How to use errors in assignments, classroom examples, examination questions, and…

A set of educational materials that have been developed which deal with chemical engineering applications in emerging technologies is described. The organization and the content of the supplemental textbook materials and how they can be integrated into an undergraduate reaction engineering course are discussed. (KR)

A demonstration used in a heat and material balances class that explains how a reusable heat pack works is described. An initial homework problem or exam question is provided with its solution. A discussion of the solution is included. (KR)

An approach to teaching electrochemical driving force that helps students comprehend the forces that govern ion flux across biological membranes and sets the stage for more elaborate analysis of biochemical signals is presented. Background information and two sample problems and answers are included. (KR)

To prepare new international graduate students for assignments as teaching assistants, the University of Washington chemistry department worked with specialists in language, pedagogy, and chemistry to design a discipline-specific training program. The program's structure, participants, benefits and limitations, and effectiveness in its first year…

A summary of the Congress's science committee meetings that decides the budget and sets the science policy for the United States is provided. The supercollider and global warming are two of the issues discussed at the hearings. (KR)

A technique for the numerical identification of bacteria using normalized likelihoods calculated from a probabilistic database is described, and the principles of the technique are explained. The listing of the computer program is included. Specimen results from the program, and examples of how they should be interpreted, are given. (KR)

Described is a summer workshop for college and high school educators designed to raise the level of expertise of the participants and to raise their awareness of physiology and medical opportunities for their students. The objectives, organization, schedule, content, credit, financial considerations, and evaluation of the program are discussed.…

Research concerning the role of stratospheric ozone and the effect of chlorofluorocarbons on stratospheric ozone are discussed. The consequences of global ozone depletion are projected. The Montreal Protocol is reviewed. (CW)

Investigated is the extent to which students' nonscientific beliefs change by comparing before and after instruction as a function of students' reasoning skill. Nonscientific beliefs discussed include special creation, orthogenesis, the soul, nonreductionism, vitalism, teleology, and nonemergentism. (KR)

Described is an interdisciplinary unit on pseudoscience which combines interest in unidentified flying objects (UFO's), physics, astronomy, art, and english composition. The different phases of the lesson, assignments, and evaluation are discussed. A list of books available on UFOs is provided. (CW)

A simple experimental arrangement that makes it possible to simultaneously observe and compare on a screen the two interference patterns produced by reflected and transmitted light from incident white light impinging on a soap film directly is described. Procedures and illustrated effects are discussed. (CW)

Two experiments which can be used to illustrate light diffraction using compact disks are detailed. Included are procedures, computations, and probable results. (CW)

Ten demonstrations of a variety of physics concepts are presented. Included are procedures and explanations of the effects illustrated. (CW)

The implementation and results of the use of videotapes in introductory biochemical engineering classes are discussed. The topics of the videotapes and the results of a questionnaire about this instructional method are presented. (CW)