Describes eight characteristics of good educational software. They are: (1) educational soundness; (2) ease of use; (3) "bullet" proofing (preventing a program from coming to a premature halt); (4) clear instructions; (5) appropriate language; (6) appropriate frame size; (7) motivation; and (8) evaluation. (JN)

Examines issues which emerged during the development of estimation materials produced by the Technology and Basic Skills-Mathematics (TABS) project. Special attention is given to the use of feedback in computer-based instruction on estimation. (JN)

Describes the approach used in a doctoral seminar on designing instructional software for problem solving in mathematics. Explains how a five stage software development model was followed for producing materials. Includes student evaluations of the course. (ML)