Models, based on Gowin's Epistomological V model, are presented which are intended to be useful in illustrating ideas to students about how knowledge is acquired and how to relate laboratory work to the concept being learned. (SA)

The laboratory experiment described here is intended to be of use to the forensic science major enrolled in a course in organic chemistry. The experiment is the use of thin-layer chromotography for qualitative analysis, specifically for the identification of drugs. (Author/SA)

Presented here is a laboratory experiment for a course in physical chemistry. Students are requested to directly measure the degree of orientational order in a liquid crystal at room temperature. A minimum amount of equipment is necessary. (Author/SA)

Describes a typical relaxation kinetic experiment using a sudden increase in the temperature of the system. Time involved is described as minimal and the approach as quicker, more accurate, sensitive, and producing simultaneous determination of several thermodynamic parameters. (Author/SA)

Describes science programs for gifted students developed at a learning center in Connecticut. Programs include investigations in astronomy, geology, and climatology. The learning center site is a abandoned NIKE missle base. (MA)

Contains a series of laboratory exercises students can do to introduce them to the basic concepts and techniques of water purification. (Author/MA)

The experiment described, suitable for undergraduate physical chemistry laboratories, illustrates the general principles of relaxation and introduces the nmr concepts of saturation and spin-inversion. (BB)

Describes a teaching unit, "Unemployment" (4-5 hours), designed for occupation-oriented schools. Discusses the teaching situation, and justification for the topic. A detailed teaching plan is given, involving Xeroxing, texts for overhead projection, and language laboratory exercises (supplied on a recording which is a supplement to this issue of…

Explains how to use sticky tape, a soda straw, and a little water to build a device which will demonstrate Charles' law as well as give the temperature. (GA)

Checks on the logarithmic property of the eye in receiving light, by using estimation methods of how much brighter a light bulb looks than does its image in a window glass. (GA)

Artists use red, yellow, and blue as primary colors, whereas physicists use red, green, and blue. Explains the reason using the spectra of mixtures of red, green, blue, and yellow tempera obtained with a Carey spectrophotometer. (GA)

Presents a method of studying RLC circuits with the help of the oscilloscope in the XYZ mode, complemented by an electronic device which generates a marker-trace on the screen and which is used to measure frequencies without the need of a reference point on the screen. (Author/GA)

The role of the computer in coordinating the activities surrounding five modes of mathematics instruction is discussed. The modes are: computer-assisted instruction, computer-managed instruction, computer-based simulations, algorithmic exercise solving, and computer-aided problem solving. (MP)

Provides step-by-step instructions for constructing a simple, inexpensive microscope. Illustrated with photographs and a drawing. (MA)

Describes a computer aided analysis and subsequent assessment of analytical (pharmaceutical) chemistry data from an undergraduate laboratory course. (Author/GA)