Describes a laboratory experiment in which the students prepare an antichap lipstick from basic ingredients and demonstrate solubility relationships between these ingredients and water. (MLH)

The pedagogy and an extensive listing of topics suitable for large scale demonstrations are provided. (CP)

Describes two experimental procedures and the reactions suitable for teaching the principle that catalysts do not affect the position of equilibrium. (GS)

Describes an activity which incorporates topographic map interpretation, soils analysis, hydrogeology, and local geology in a five-week series of exercises for an introductory college earth science class. (CP)

Provides an account of the way in which one small university has coped with limited funds and a small staff to provide laboratory activities for freshman physics courses. (CP)

Explains an error analysis procedure using the computer which requires no previous student experience with the computer. (CP)

Reported here is a convenient alternative for determining the enantiomeric purity of student resolved alpha-phenylethyl amine using a chiral lanthanide shift reagent. (BB)

This experiment graphically demonstrates a change in the sign of the P-C-H coupling constant between trivalent phosphorus and tetravalent phosphorus. (BB)

This reaction can form the basis of a laboratory experiment for students who have mastered basic spectroscopy. The structure of the product can be assigned from four reasonable possibilities on the basis of the nmr spectrum. (BB)

Describes a demonstration for measurement of biophysical signals produced by the human body. The signals, after amplification, could provide acoustical feedback through a voltage-controlled oscillator (VCO), or they could be seen either with an oscilloscope or a high speed chart recorder. (GA)

The Japanese morning glory, a short-day plant, is an excellent specimen for studying photoperiodism. This article gives ideas for investigations including the effects of hormones, light quality, and temperature. Preparation of the seed is also discussed. (BB)

Describes an exercise which familiarizes students with organic chemistry terms and introduces preferential degradation reactions. (CP)

A colorimetric procedure for the determination of serum iron for use in freshmen and sophomore level quantitative analysis laboratories is described. (CP)

Describes a blood coagulation test developed by two high school biology students. Although the test lacks some precision, results indicate that the technique is comparable to standard methods used in laboratories. (MA)

Describes an experiment for general chemistry students for analyzing bathroom cleansers. (SL)