Introduces an activity in which students build a fuse with steel, wood, light bulbs, copper wire, clay, and batteries. Uses the cross-age instructional approach to teach about the value of instructional time. Contains directions for building a fuse. (YDS)

Describes CD-ROM-based program called Joint Education Initiative that was started by U.S. Geological Survey. The culmination of the collaborative effort includes three compact discs and a teacher activity book. The discs contain several databases, geophysical data that can be superimposed over satellite images of North America, images from the…