This article discusses ways for reflecting the present level of the natural sciences and their technical applications in secondary labor education. The author emphasizes ideas from the new interrelated branches of science, physical science in particular, that are developing at the interface of the classical sciences. (Author/RM)

Value orientations of students were investigated as a function of measured intelligence, general academic average, chemistry grade and sex. Value orientations of teachers were investigated as a function of level of university chemistry preparation, level of teaching experience, and biology teaching involvement. (GS)

Describes the macroscopic process of the swelling of clay by adding water, and the corresponding microscopic process of water molecules entering the spacings between clay crystals. Discusses how the Bragg equation can be used together with other physical data to calculate these spacings. (MLH)

Several questions (and answers) regarding the effect of environmental variables on organisms are presented. (RH)

Describes an undergraduate chemistry experiment which demonstrates the use of codistillation for the separation of substances of low volatility from nonvolatiles. Pine gum is separated into turpentine and rosin by means of codistillation with steam at temperatures above 100 degrees centigrade. (MLH)

Describes an undergraduate physical chemistry experiment in which a low cost spectrofluorimeter is used to carry out elementary emission measurements on a transition metal complex. The students measure uncorrected emission and excitation spectra, and determine the rate constant for an exceedingly fast bimolecular reaction, the deactivation of an…

Suggests ways in which the "drinking duck," a seemingly self-propelled duck toy, can be used to illustrate the principles of phase equilibria and thermodynamics. (MLH)

Describes the construction of a moving model for demonstrating kinetic theory and explains how it can be used to represent all three states of matter. (GS)

Describes how to play "Periodic Creep," a chemistry game in which the periodic table is the board. (LS)

Describes a series of literature problems integrated into organic and biochemistry courses which direct students to seek specific information from specific sources. (GS)

Addresses the problem of insufficient guidance for graduate students who are choosing their doctoral research area. Describes a required graduate course for all doctoral candidates in chemistry at SUNY Buffalo entitled, "Selection of Thesis Research." (MLH)

Describes a procedure for periodically sampling varying analog signals and storing its digitized signal in the computer. (MLH)

Describes an experiment which measures the surface tension of a liquid and illustrates interfacial spreading and the Marangoni effect. (MLH)