Reports a study to compare the performance of Australian university students on chemistry questions delivered in two different formats: multiple choice and grid. Concluded that students encounter more difficulties with questions presented in the grid format and that grid questions demand a deeper understanding of the topic. (MDH)

Compares the chemistry textbooks used in China's elite schools with those used in other levels. Comparisons indicate that the textbooks differ only in the quantity of material required. (MDH)

Described is a project where students gain experience in handling large volumes of hazardous materials, process start up and shut down, equipment failures, operational variations, scaling up, equipment cleaning, and run-time scheduling while working in a modern pilot plant. Included are the system design, experimental procedures, and results. (KR)

The pencil-and-paper assignment "Represent water in its three states using a model" was given to pupils (n=227) from eighth to twelfth grades. The findings show that the dominant model used was the space filling type; movement of particles was indicated by a minority of pupils; size of the model changed when drawn in different states.…

Describes a study designed to achieve the following goals: (1) compare the perceptions of learning environment in biology and chemistry classrooms by Jewish and Arab students; (2) identify gender effects in the Arab sample on learning environments; and (3) compare the perceptions of Arab students in rural and city schools. (ZWH)

Restricted factor analysis shows that the multiple-choice and free-response sections of the Computer Science and Chemistry Advanced Placement examinations (College Board) measure the same proficiencies for the most part. There is a small degree of multidimensionality because of local dependence among free-response items. (SLD)

A survey of adults that shows considerable misunderstanding of two major ideas--that there is no energy in fuels and burning involves two stages--is discussed. Proposed are fundamental changes in the way ideas about burning are introduced to children. (KR)

An investigation of students understandings of acids and bases using concept maps, multiple-choice tests, and clinical interviews is described. The methodology and resulting analysis are illustrated with two abbreviated case studies selected from the study. Discussion of concept mapping points to how it starkly represents gaps in the understanding…

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)

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…

Presents activities that utilize balloons to encourage students to explore questions related to scientific concepts. Concepts explored include light, heat, charged ions, polarization, and the sense of smell. (MDH)

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)

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)