Provides historical background on Pasteur's resolution of an optically active compound, and describes an undergraduate laboratory experiment in which optically active compounds are separated. (MLH)

Presents information on a centrifugal force apparatus, signal averaging with a minicomputer, and the use of an air track. (MLH)

Describes an undergraduate organic laboratory experiment involving the separation of an unknown solid organic acid and an unknown solid organic base. The experiment is designed to present the student with an unexpected difficulty, namely, the formation of a separable viscous liquid, to see how the student handles this difficulty. (MLH)

Describes a series of experiments which illustrate the analytical capabilities of fluorescence, and outlines two straightforward analyses involving real analyses. These experiments are suitable for an undergraduate instrumental analysis course and require approximately six to seven hours of laboratory time. (MLH)

Presents a three-step model of English teaching at the Gesamtschule and lists the requirements for achieving the goals of each step in relation to the lay-out and technical equipment of the learning area. (Text is in German.) (IFS/WGA)

Outlines safe laboratory procedures for the handling of micro-organisms including aseptic technique, manipulation of cultures, and treatment of contaminated equipment. Identifies the principal hazard as the microbial aerosol, explains its possible effects, and describes the appropriate precautions. (GS)

Describes an experiment that generates data for calculating the ratio of molecular separation in a gas to molecular diameter. (GS)

A self-instructional technique for developing listening fluency in foreign language laboratories is reported. (RM)

A reactor to convert waste rubber tires to useful products such as CO and H2, was investigated in a university undergraduate design project. The student worked individually with mentorship from a faculty professor who aided the student with professional critique. The student was able to research the background of the field and conceive of a novel…

Presents ideas for equipment protection, equipment storage, apparatus construction, demonstration techniques, and laboratory procedures. (GS)

This teaching module was developed by the project "Recent Developments in Science and Technology with Applications for Secondary Science Teaching." Premises about students and their learning and generalizations about content are described. Chapters included are: (1) "Introduction"; (2) "Monomers into Polymers"; (3) "Natural Polymers"; (4)…

An attempt to replicate a study of the accuracy of test results of medical laboratories was unsuccessful. Limitations of the obtained data prevented the research from having satisfactory internal validity, so no formal report was published. External validity of the study was also limited because the systematic random sample of 78 licensed…