Gregory Weber, associate professor of informatics at IU East, has developed an open source software program to help informatics students to effectively learn recursion by drawing diagrams. Sifflet is a visual, functional programming language to make programs by drawing diagrams to connect functions and other units. Use of Sifflet provides a graphical high-level view of how a complex computation works, and allows users to zoom in to see more details as needed.
-- Posted 19 July 2010