Describes an experiment in which rat adipose tissue samples are exposed to labeled glucose; insulin is added to one sample. Subsequent scintillation counting demonstrates the ability of insulin to facilitate the entry of glucose into the tissue. (MLH)

In this simple experiment for an undergraduate laboratory a laser beam is passed through the mixing zone of two liquids with different refractive indices. The spatial variation of the refractive index, at different times during the mixing, can be determined from the observed deflection of the beam. (Author)

Describes four synthesis experiments, adapted for the general chemistry laboratory, in which compounds in unusual oxidation are prepared. The abnormal oxidation states involved in the synthesis products are: silver (II), chromium (II), lead (IV), and bromine (I). (MLH)

Describes two experiments, one involving the electrolysis of potassium iodide and the other involving a diffusion process in solid copper. (GS)

Describes a program built on the philosophy that laboratory exercises were to be exclusively reserved for those concepts which could not be taught more effectively by other pedagogical techniques. Presents faculty and student criticisms of the program. (GS)

Describes an open-ended experiment involving a bioinorganic system that provides the student a direct link between thermodynamics and kinetics. It utilizes a rapid reaction technique and requires one to clearly understand the relationship of experimental observable (absorbance) to a mechanism. (GS)

Discusses the advantages and disadvantages of a specific method of bacterial identification and suggests some modifications or improvements. The approach is presented as being suitable for obtaining information about the diversity of bacterial types on student fieldwork. (Author/EB)

Photographs of a beetle, Catamerus rugosus, were taken at different stages in its life cycle. Students were asked to relate these to real life and carry out a statistical analysis to determine the degree of dispersion of animals. Results demonstrate a change in dispersion throughout the life cycle. (Author/EB)

Describes an introductory course for college students which consists of a series of questions related to a report on bacterial contamination of glucose drip bottles. The students discuss and conduct their own experiments. Summarizes student and staff response to this course. (Author/EB)

Presents an experiment in which a programmable calculator is employed as a data generating system for simulated laboratory experiments. The example used as an illustration is a simulated conductimetric titration of an aqueous solution of HC1 with an aqueous solution of NaOH. (Author/EB)

Describes the construction of a calorimeter to be used in an experiment which consists of measuring the rate at which ground level solar radiation raises the temperature of the metal in the calorimeter. (GS)

Explains two approaches for stimulating the intellectual development of the student from the concrete to formal operations level. One method involves experimentation and critique during which the student deduces the principle. The second involves a lecture approach that utilizes the creation of the discrepant event. (GS)

Describes an experiment designed to augment textual materials conducive to the inquiry approach to learning. The experiment is the culminating experience in a series designed to illustrate the fundamental nature of the atom: its quantized energy nature, its electrical nature, and its combining ability. (Author/GS)