A Type Notation for Scheme by Gary T. Leavens, Curtis Clifton, and Brian Dorn Abstract This report defines a type notation for Scheme. This notation was used in the undergraduate programming languages class at Iowa State in Spring 2005. Keywords: Scheme, type checking. This document is distributed under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.