Describes an introductory course in geology for nonscience majors that involves students in laboratory exercises related to rock classification. (GS)

Describes equipment set up and experiment objectives, variables, analyses of data as well as data interpretation. Deals with surface colors besides the classical examples of black and white. (BR)

Directions for constructing a hand glider out of free or inexpensive materials are combined with measurements, tests and recordings of its flight done in metric units. (BR)

Describes how to construct a model of a DNA molecule with inexpensive materials. (BR)

Describes two exercises which demonstrate to students the mechanics involved in arriving at logical conclusions. (BR)

This experiment leads to a value for the ground-state hyperfine splitting of Cs 133, the accepted standard of frequency, to one percent accuracy. (Author/GS)

Utilizes a rotating table and strobe photographs to provide students with a direct record for quantitatively analyzing rotational effects. (GS)

Describes an approach wherein the student selects a single type of simple item and uses it as the basis for making a physics demonstration. Provides an example that uses a cheese dish in eighteen different demonstrations. (GS)

A science toy sometimes called the "magnetic spinner" is an interesting class demonstration to illustrate the principles of magnetic levitation. It can also be used to demonstrate Faraday's law and a horizontally suspended physical pendulum. The levitated part contains two circular magnets encased in a plastic housing. Each magnet stays…

Describes the result of dropping objects of similar size and shape but of differing weight through air. Compares ideas on motion of Galileo and Aristotle. (GH)