This report focuses on research and development activities related to the 1983-85 Instructional Microcomputer Project for Arkansas Classrooms (IMPAC), under the supervision of the Arkansas Commission on Microcomputer Instruction. The report includes five major sections: (1) research findings that relate to achievement levels in mathematics, reading, and language arts in the elementary school affected by methods other than those involving computer technology; (2) research findings that relate to achievement levels in mathematics, reading, and language arts in the elementary school affected by methods directly related to computer technology, especially computer assisted instruction (CAI); (3) evaluation of IMPAC experimental programs including achievement scores and hardware, software, maintenance, and in-service training; (4) suggestions for implementing cost- and educationally-effective basic skills guidelines involving Computer Managed and Computer Assisted Instruction (CMI-CAI); (5) recommendations for program implementation in grades 3-8 in Arkansas School Districts over the next four years. The report concludes with recommendations for selecting and purchasing hardware and software, recommendations for in-service training, and a discussion of electrical and space requirements for microcomputers. A bibliography containing 73 references is appended. (Author/DR)