The project objective has been to determine what creative thought processes can best take advantage of new technology in computer hardware and software. The plan has been to acquire or develop on-line computer systems of significant mathematical power, and to explore their use in vivo in teaching and research situations. The main product of project research is THE BRAIN (The Harvard Experimental Basic Reckoning and Instructional Network), an interactive computing system which operates on a standard IBM 360 Model 50 under the standard IBM operating system OS. This working system is easy and flexible to use in mathematical and engineering investigations as well as in teaching, and has been engineered for straightforward exportation from Harvard. (Author)