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This final report describes activities and accomplishments of a project which developed, implemented, and evaluated the effectiveness of a microcomputer/videodisc math instructional management system for grades K-4. The system was designed to operate on an APPLE II microcomputer, videodisc player, and input-output devices. It included three subsystems: (1) a math assessment subsystem; (2) a math instruction/management subsystem; and (3) a staff development subsystem. The system was developed to support diagnostic/prescriptive teaching for mastery learning. Evaluation of the system was conducted both with English-speaking and Spanish-speaking students. The assessment system was compared to a parallel paper and pencil criterion-referenced test. Additionally, student data were used to determine difficulty level, validity, and reliability of each item in the assessment component. Evaluation indicated the assessment component was valid and reliable and that the staff development procedures were effective. Appended are the teacher’s guide to the math assessment videodisc program and a list of publications generated by the project. (DB)