Seven p-nitrophenyl benzoate esters (p-nitrophenyl benzoate, p-nitrophenyl m-anisate, p-nitrophenyl p-anisate, p-nitrophenyl m-chlorobenzoate, p-nitrophenyl p-chlorobenzoate, p-nitrophenyl m-toluate, p-nitrophenyl p-toluate) were synthesized and characterized by students in a second-semester organic laboratory course. In a subsequent laboratory…

Students have used Cogito.org to pose and/or solve math problems and brain teasers, share their experiences in academic competitions, debate the pros and cons of using biofuels for energy, design an alien world based on sound scientific principles, and expand their cultural understanding by connecting with students from around the world.…

Instructional techniques based on research in cognitive science and physics education have been used in physics courses to enhance student learning. While dramatic increases in conceptual understanding have been observed, students enrolled in these courses tend to move away from scientistlike views of the discipline and toward novicelike views, as…

The roles of science in society and the nature of science are the focus of many science curricula. Current views about these two aspects of science have largely been informed by the history of scientific development. This article uses the outbreak of severe acute respiratory syndrome--a recent health scare--as a case study to explore the roles of…

Many scientists are concerned about efforts to place disclaimers in textbooks concerning the controversial nature of certain theories. The issues raised in such disclaimers are that a particular explanation for a set of observations may not be correct, has limitations, needs further study, and is "just a theory," may be shown, eventually, to be…

Some criticisms leveled by Richard Bates and Thomas Greenfield against traditional views of the science of administration may be justified, but they do not apply to a science of administration based in the newly emerging philosophy of science. This paper begins by introducing these criticisms, which focus on the traditional views' failure to…

Reviews some research on, and provides a mathematical model for, the decline in bacterial populations in a closed system as a consequence of accumulating toxins and decreasing food. (AL)

Presents experiments, models, and interpretations of reports that hot water begins to freeze faster than cooler water. Preliminary conclusions show that the surface area, side wall cooling, evaporation, and environment are the most important parameters. (DS)