Discusses many popular carnival rides in relation to the physics of their operation. Includes calculations showing the g force produced by various attractions. (CP)

Proposes a method to estimate the number of civilizations which may exist in the universe. Reviews attempts which have been made to contact these bodies. (CP)

Describes an experiment that gives useful insight into ideas of solvation and polarity of solvents. (GS)

Describes how to collect micrometeorites and suggests a number of related activities such as determining the number of meteors entering the atmosphere and determining the composition of the micrometeorites. (BR)

Describes some functional group interconversions that can be carried out on a small scale. The reactions are examples of transformations found in A-level, ONC and HNC courses for British chemistry students. (Author/GS)

Alerts science teachers to "futures research" involving the systematic determination of the major alternative futures which can emerge from our present and the delineation of how our present actions can influence which of these alternatives will occur. Identifies some available resources for teachers. (PEB)

Describes how to produce a rainbow in the classroom using a laser and a large sphere, or a partial rainbow using a cylinder of water and a light source. (BR)

Presents detailed teaching plans for activities with "rubberized" magnets as well as background information and alternative teaching-learning approaches. This activity may be used to develop student skills in inferring and in observing evidence of interaction. Includes instructions for equipment construction. (BR)

Describes the construction of a model to show circumpolar stars. (BR)