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Since the summer of 1992, Project CLEA (Contemporary Laboratory Experiences in Astronomy) has been developing modular lab exercises for introductory astronomy that emphasize modern observing techniques using computers. Four modules are now available for the Windows environment each of which incoroporates high-quality bitmapped graphics, a highly interactive simulation of observations, on-line data logging, and extensive printed and on-line documentation. The exercises are The Revolution of the Moons of Jupiter, Radar Measurements of the Rotation Rate of Mercury, Photoelectric Photometry of the Pleiades, and the Hubble Redshift-Distance Relation using digital spectrophotometry. Several additional labs are under development, and less elaborate software is available for Mac machines. We will demonstrate the software, describe the current project, illustrate some of our plans for future development, and provide information on obtaining CLEA material. This research has been supported in part by Gettysburg College and NSF Grants USE 9151535, USE 9155927, and DUE 9350899.}
