The e-Design Assessment Tool (eDAT) is a tool to help tutors represent and evaluate effective blended or distance learning designs. The eDAT combines a simple analysis of the learning activities with reflections on the teaching and learning perspective that underpins the design.
J. Nielsen, and R. Molich. CHI '90: Proceedings of the SIGCHI conference on Human factors in computing systems, page 249-256. New York, NY, ACM Press, (1990)