Discusses new techniques for studying reactions that occur in the picosecond range and how the results of this research provide new insights into biochemical events and the chemical processes that take place in liquid systems. (MLH)

Presents short articles on: recycling disposable plastics for laboratory use; an inexpensive source of atomic and molecular models; a simplified Boyle's Law demonstration; and a lab demonstrating energy transformation. (MLH)

Presents four short articles on: a power supply for the measurement of the charge-to-mass ratio of the electron; a modified centripetal force apparatus; a black box electronic unknown for the scientific instruments laboratory; and a simple scaling model for biological systems. (MLH)

Evaluates Thornton's modular electronics system for use in the general physics laboratory. Includes the Thornton pre-set counter-adapter, decade counter, and amplifier-power supply. (MLH)

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)

Plenty of subject choices make creative writing personal and successful. (Editor)

Examines various methods of evaluating nursing students in the clinical area used as far back as 1900, and concluding that the clinical laboratory remains an important and indispensable aspect of the nursing curriculum, suggests aspects of a workable framework for a solution to the evaluation problem. (TA)

Describes and illustrates with pictures a process for making fossil molds using latex solution. Also employs gauze, plaster of Paris, and coloring compounds. (DDR)

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 an activity used at the Washington Park Arboretum that helps students understand cloning through plant propagation. Students also learn how to make a pot from recycled newspapers and how to make soil that is appropriate for the plants. (DDR)

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…

NEW3 (New Knowledge, New Technology, and New Work) is a three-pronged program of the Educational Service Center in Summit County, Ohio, that encourages real-world experiences instead of text-based instruction. It was funded by a federal Technology Learning Challenge Grant. (JOW)

Proposes an examination of the motives in having biochemistry students perform practical laboratory exercises. Suggests that a typical course should be viewed as a progression of skills development culminating in a final year, open-ended research project that demands that the skills be used competently and efficiently. (DDR)