Given that interest is associated with learning in educational research, understanding how its development can be supported in different learning contexts represents an important line of inquiry. In this study, we investigate the influence of the slowmation construction process on middle school students' interest in learning science and geology.…

Describes an inexpensive technique which can be used to convert a slide projector into a polarized light source. (CP)

Provides the theory behind the construction of a classroom seismograph. Data obtained from such a device is presented. (CP)

A salt model was developed as a teaching tool to demonstrate the development of caverns and karst topography. Salt slabs are placed in a watertight box to represent fractured limestone. Erosion resulting from water flow can be photographed in time-lapse sequence or demonstrated in the laboratory. (Author/CP)

Using the basic Bagnold design, a relatively inexpensive suction-type wind tunnel can be constructed for laboratory demonstration of sand-grain movement, ripple development, and other eolian processes. Its simple design provides no workshop problems and it can be made for a total cost in materials of approximately $225. (Author/CP)

Described is a base-friction modeling technique for studying the development of collapse structures in jointed rocks. A moving belt beneath weak material is designed to simulate gravity. A description is given of the model frame construction. (Author/SA)

An inexpensive apparatus for demonstrating low temperature mineral synthesis in an undergraduate geology laboratory is described. (Author/SA)