With support from the National Science Foundation and the University of California, the Physics Computer Development Project have produced in the last six years computer based material in a wide variety of modes. Among the major products are science learning dialogs, graphic additions to APL (A Programming Language), the underlying software, and the authoring system. The project has five major objectives: to produce examples of effective use of graphics in computer-based teaching materials; to explore the use of graphics in computer based teaching materials; to explore authoring modes; to introduce dialogs and other standard computer approaches into standard undergraduate environments; to seek a compatible software strategy. Future projects include an organized Research Unit in Educational Technology and a single timesharing computer for science teaching on all eight undergraduate campuses of the University of California. (SK)