Examined are the illustrations and descriptions of the molecular structure of sulfur dioxide found in selected chemistry textbooks. Inconsistencies and incorrect information are indicated. It is suggested that molecules other than sulfur dioxide be used as examples of molecules for which resonance is important. (CW)

Argues that writing centers can unintentionally emphasize writing-for-evaluation at the expense of writing-for-learning. Proposes that writing centers help students write productive journal entries; coach students in freewriting; appeal directly to students in writing-for-learning courses; and sponsor ongoing faculty education in…

Discusses differences between computer-enhanced learning (CEL) and computer-aided learning (CAL), and describes a microcomputer-based graph-plotting program called Capgraph that was developed for use in a college calculus course. Results of a course evaluation are presented; student attitudes are described; and future considerations are discussed.…

Provides a checklist for troubleshooting malfunctions in classroom microcomputers and explains steps involved for each component. Areas that are addressed include tools to have available; checking computer cables; disk drives; the computer itself; the monitor, or receiver; printers; and software. (LRW)

Described is an activity in which students locate the epicenter of several earthquakes, plot the trends of the two faults involved, and determine the sense of motion along the plane of the two faults. Provided are objectives, background information, procedures, and data necessary for the activity. (CW)

Presented is an activity in which a mystery setting is used to motivate students to construct their own decay curves of melting ice used as an analogy to radioactive decay. Procedures, materials, apparatus, discussion topics, presentation, and thermodynamics are discussed. (CW)

A method and an apparatus for safely observing sunspots is presented. The McIntosh system of sunspot-group classification is illustrated. Construction and enhancement of the apparatus are discussed. (CW)

Prescriptions for improving student understanding and problem-solving performance related to transmission genetics are discussed. Research on novice/expert problem-solving in transmission genetics is reviewed. (Author/CW)

Argues that the science lab can be an environment highly conducive to intellectual development. Discusses students' task commitment and motivation, and teacher enthusiasm, expectations, genuineness, and exemplary behavior in light of research findings and the author's personal experience. (RS)

Discusses how a spreadsheet might be used in an introductory physics laboratory. Describes three categories of spreadsheet uses, advantages of spreadsheet, layout, accuracy, and modifications. Gives an example of the variable mass rocket problem with typical display. (YP)

Discusses a history exhibit of the American Chemical Society, now on national tour. Focuses on lecture to laboratory, chemistry in early America, the Civil War era, the research model, the early twentieth century, the post-war era, textbooks, and the recent past. (MVL)

Discusses a high school physics course for a vocational program. Describes the development, organization, characteristics, and pilot test results for "Principles of Technology." (YP)

Highlighting the importance of precision in recording, analyzing, and interpreting data in experimental psychology courses, the author proposes that students be assigned grades of A or F for the results section of laboratory reports. Papers receiving F's could be resubmitted for reduced grades until they are free of errors. (GEA)

Describes the use of a simulated learning environment (SLE) as an instructional aid in teaching multivariate statistics, particularly inferential statistics. A prototype microcomputer-based SLE called MVWORLD developed at Drexel University for upper level statistics courses is explained, and implementing a statistics laboratory for multivariate…

Reports a method of preparation for tris(ethylenediamine)cobalt(III) and tris(2,2'-bipyridine)cobalt(III) that will shorten the preparation time by approximately 3 hours. Notes the time for synthesis and isolation of compound one was 1 hour (yield 38 percent) while compound two took 50 minutes (yield 71%). (MVL)