Describes an experiment involving the oxidation of aromatic primary amines to the corresponding azo compound; suggests procedures for studying factors that influence the yield of such a reaction, including the choice of solvent and the oxidant-amine ratio. (MLH)

Discusses the feasibility of analytical experiments that use only spot plates and eye droppers, thus allowing quantitative experiments to be performed with quantitites limited to several milliliters per student. (MLH)

Describes an experiment that involves the synthesis of copper (II) aspirinate and the analysis of copper content in the product using electrogravimetric, spectrophotometric, and titrimetric methods. (MLH)

Presented are accounts of how two local jurisdictions in the United States have dealt with the question of regulating recombinant DNA research. Arguments used to devise guidelines for consideration by the New York State Legislature and the recommendations made by a citizens group in Cambridge, Massachusetts are detailed. (CS)

Reproduced is the report made by a citizens' group in Cambridge, Massachusetts and presented to the city council that outlines safety regulations for the conduct of recombinant DNA research at Harvard University and the Massachusetts Institute of Technology. (CS)

The role of differential rehearsal opportunity in the free recall of remember- (R) and forget- (F) cued words was investigated as a function of the method of presentation. (Editor)

Assesses both individual-to-group and group-to-individual transfer on a concept-attainment task in a between-subjects design with both of the appropriate individual-to-individual and group-to-group controls. (Author/RK)

Conducted an experimental evaluation of Teen Outreach, a national volunteer service program. Found that rates of pregnancy, school failure, and academic suspension, at exit nine months later, were substantially lower in the Teen Outreach group, even after accounting for group differences at entry. Results suggest potential value of interventions…

Describes a laboratory experiment dissolving zinc from galvanized nails in which data can be gathered very quickly for statistical analysis. The data have sufficient significant figures and the experiment yields a nice distribution of random errors. Freshman students can gain an appreciation of the relationships between random error, number of…

Describes a quick, inexpensive laboratory demonstration of Charles's Law. The opening of a large, round balloon is placed snugly over the mouth of a narrow-mouthed 750-mL Erlenmeyer flask, which is then heated in a strong flame. At end of the full procedure, students easily arrive at the conclusion that the volume of a gas is proportional to…

Le Chbtelier's Principle states that, when a system at equilibrium is subjected to stress, the system will respond in such a way as to minimize the effect of the stress. Describes a lecture demonstration that illustrates shifts in the position of equilibrium caused by a variety of factors. The equilibrium mixture contains iron (III) and…

Describes a laboratory project for first-year biology students that examines competition among various cellular slime molds. After a brief introduction to the topic of competition and basic life history information about cellular slime molds, students choose a question and design original experiments to seek an answer. (Author/AIM)

How students develop forms for self-regulating learning is explored. It is suggested that they experiment, bootstrapping newer forms of self-regulated learning from prior forms. Obstacles are obtaining sufficient practice, remembering how learning was enacted, and reasoning about factors that affect learning. (SLD)

Examines how various public libraries in the Chicago area approach the issue of whether or not to allow coffee and food in the library. Discusses competition with "glossy new" bookstores; research, marketing, and experiments using bookstores as models; and the development of public lounges/coffee shops which are separate from the rest of…

Describes an approach for making chemistry relevant to everyday life. Involves the study of kinetics using the decomposition of hydrogen peroxide by vegetable juices. Allows students to design and carry out experiments and then draw conclusions from their results. (JRH)