Experiments using soap films illustrate some of the most basic theorems concerning networks in a geometric framework. (SD)

Describes thin-layer chromatography experiments in which the students separate natural products, such as paprika, chile powder, and peppers. (MLH)

Describes an undergraduate chemistry experiment in which an atomic absorption spectrophotometer is used for recording flame emission spectra of the diatomic carbon molecule. (MLH)

In an experimental approach to the teaching of General Mathematics, students work individually on projects; two teachers work together with the class. Although evaluation is incomplete, the authors feel the approach has had a positive effect on student motivation. (SD)

Suggests that Experiment 13.2 (c) of the Nuffield 0-Level Chemistry Course be banned since the oxidation of lithium under very humid conditions can cause an explosion. (LS)

Article investigated the effects of inanimate stimuli upon the learning behaviors of children as well as the presence of their mothers in a learning environment. (RK)

Describes applications of mechanical principles based on the theory of flight. Includes a discussion of aerofoils and lift, aircraft structures, aircraft performance, and laboratory experiments. (GS)

Describes a computer simulation experiment in which physical chemistry students can determine all of the kinetic parameters of a reaction, such as order of the reaction with respect to each reagent, forward and reverse rate constants for the overall reaction, and forward and reverse activation energies. (MLH)

Describes an organic chemistry experiment in which seven possible mechanisms for the isomerization reaction are tested with simple sense observations and melting point determinations. (MLH)

Five teaching experiments with French songs, in grades 7, 8 and 9, are described. Aural understanding was practiced first, then use of the text. In the 9th grade, work on the content became most important, with the aim of correcting and expanding the common conception of France. (Text is in German.) (IFS/WGA)

Describes the process for determination of the constants from data obtained with a hydrogen-deuterium light source and Ebert plane grating spectrograph. (Author/CP)

Includes a discussion of the structure of some molecules and the design of an experiment to replace CHEM Study Experiment 7. (GS)