Examines the effect of solar radiation on colored shingles. Describes the experimental procedure, results, and discussion. Presents a picture of the experimental arrangement and three graphs of data measured at different dates. (YP)

Describes several common synthetic organic transformations involving alkenes, alcohols, alkyl halides, and ketones. Includes concepts on kinetic versus thermodynamic control of reaction, rearrangement of a secondary carbocation to a tertiary cation, and the effect of the size of the base on orientation during elimination. (MVL)

States that if photochemical reactions can be followed spectrophotometrically, reactivities can be estimated by evaluating data from only one curve. Studies such a system using computerized evaluation and simulation. Uses chlorocuprate(II) complexes in acetonitrile solutions for the model systems. (MVL)

Presents relevant statistics accumulated in a fall organic laboratory course. Discusses laboratory equipment setup to lower the amount of waste. Notes decreased solid wastes were produced compared to the previous semester. (MVL)

Examines two computer interfaced lab experiments: 1) discusses the automation of a Perkin Elmer 337 infrared spectrophotometer noting the mechanical and electronic changes needed; 2) uses the Gouy method and Lotus Measure software to automate magnetic susceptibility determinations. Methodology is described. (MVL)

Considers three common cases of localized corrosion of metals: pitting, crevice, and stress corrosion. Provides experimental methods for studying all three methods. Includes a discussion of expected results. (ML)

Describes an experimental procedure for determining trihalomethanes (THMs) in liquids by gas chromatography. Provides recommendations for reactants and supplies to obtain acceptable results. Discusses the analysis of water from various sources: pools, lakes, and drinking water; compares these to three cola drinks. (ML)

Involving students in inquiry-based exercises is much more difficult than simply providing activities for them to do in the classroom. While active learning suggests students are physically participating in the lesson, inquiry learning requires that they are also mentally participating in it. Academic theorists agree it is more the mental…

This article demonstrates an active learning technique for teaching the Central Limit Theorem (CLT) in an introductory undergraduate business statistics class. Groups of students carry out one of two experiments in the lab, tossing a die in sets of 5 rolls or tossing a die in sets of 10 rolls. They are asked to calculate the sample average of each…

Teaching is, in many respects, an art. Teachers must strike the right balance between sometimes opposite demands. On the one hand, they should lead students to scientific insights; and on the other hand, their teaching should be attractive. Teachers should not only inform, but also entertain. Experiments and stories can help them to combine these…

This book provides information to help create a themed science fair for childen in grades 4-6. Illustrated instructions and checklists for each of the 100 plus experiments are provided, plus ideas for teachers and students to vary experiments for additional scientific discovery. The experiments are written in age-appropriate language so that…

Empirical evidence has shown that several factors influence whether a compound is represented as several independent components or as a configuration. However, most of the previous research focused on data-driven factors (e.g., modality of the stimuli presented in the experimental task). In one experiment, I analyzed the influence of people's…

The renewal of extinguished conditioned behaviour appears to reflect context-dependent learning. The present research used a conditioned suppression task with humans to examine whether instructions concerning the context could influence renewal. Pairings of a conditional stimulus (CS) and unconditional stimulus (US) were made in one context,…

Interest in using classroom experiments to teach economics is increasing whereas empirical evidence on how experiments affect learning is limited and mixed. The author used a pretest-posttest control-group design to test whether classroom experiments and grade incentives that reward performance in experiments affect learning of introductory…

The reporting, analysis, and management of adverse events (AEs) provide an ongoing assessment of risk in the context of a clinical trial and enhance the protection of human research participants and the informed consent process. Effective and efficient review of AEs has been a long-standing challenge for Institutional Review Boards (IRBs) and…