This article describes research on the quality of a computer program designed to help secondary level science teachers in southern Africa create exemplary paper-based lesson materials. Results of this study show that the content, support, and interface of the program combine to form a tool that is considered by both users and experts to be valid and practical. Findings further indicate that it has the potential to help users create good quality materials while learning from the design process, but that this potential depends primarily on how the program is implemented. (Contains 8 figures.)