This study revamps and optimizes the teaching and learning process and instrument for the classic binary vapor-liquid equilibrium experiment by combining activity coefficient model simulations and practical exercises. Our teaching process combines a software simulation and practical exercises. Utilizing Aspen software, students can predict phase…

Experiences and experiments with mirrors will spark pupils' imaginations while providing insights into the nature and behavior of light. (Author/DF)

Uses paper chromatography with food dyes to provide a simple and inexpensive basis for teaching chromatography. Provides experimental methodology and tabled results. Includes a solvent system comparison (Rf) for seven dyes and twenty-two solvents. (MVL)

Discusses a course, centered around 32 experiments taught for advanced students, designed to develop a laboratory strongly suggestive of contemporary research using relatively sophisticated apparatus. Its unique advantage lies in enriching advanced physics curriculum. (DF)

Presents experiments, demonstrations, activities and ideas relating to various fields of biology to be used in biology courses in secondary schools. Among those experiments presented are demonstrating the early stages of ferns and mosses and simple culture methods for fern prothalli. (HM)

Describes an experiment for determining the blackbody radiation constant hc/k, utilize a conventionally built cavity and a single-beam, single-window Perkin-Elmer 12-C model spectrometer. (SL)

Proposes an alternative to the classical minimum-deviation method for determining the refractive index of a prism. This new "fixed angle of incidence method" may find applications in research. (Author/GA)

Describes an experiment for studying the dynamics of a soft spring. (SL)

Describes experiments that can be carried out by freshmen in general science courses. All experiments are prepared with inexpensive equipment and materials. Quantitative data are analyzed intuitively using graphical representations. (JP)

Analyzes the role of experiments in science teaching, and applies this analysis to the teaching of Millikan's experiment in physics. Critically examines an article written by T. J. Harvey entitled Millikan made easy'' which was previously published in The School Science Review. (JR)

Describes a course based on laboratory use of three skills as a way of teaching a general method of problem solving. (DF)

Describes experiments, demonstrations, activities and ideas relating to various fields of chemistry to be used in chemistry courses of secondary schools. Three experiments concerning differential thermal analysis are among these notes presented. (HM)

Includes a simple technique to demonstrate Millikan's oil drop experiment, an environmental studies experiment to measure dissolved oxygen in water samples, and a technique to demonstrate action-reaction. Science materials described are the Pol-A-Star Tomiscope, Nuffield chemistry film loops, air pucks and pH meters. (JR)