Page 1 The IQWST Experience: Coherence as a Design Principle Yael Shwartz 1 , Ayelet Weizman 2 , David Fortus 1 , Joe Krajcik 3 , Brian Reiser 4 1 Weizmann Institute of Science 2 Michigan State University 3 University of Michigan 4 Northwestern University The research reported here was supported in part by the National Science Foundation (ESI-0439352 and ESI-0227557). Any opinions expressed in this work are those of the authors and do not necessarily represent either those of the funding.